Convert them please

Convert Them Please

Answers

Answer 1

Answer:

a) 1.999 moles He

b) 0.50 moles Cu

Step-by-step explanation:

Answer 2

Step-by-step explanation:

1 km = 1000 m = 0.621371 miles

so,

786.3 m = 0.7863 km (simply divide by 1000).

40 km/h = 40×0.621371 mph (as the reference of 1 hour stays the same).

= 24.8548 mph

always consider the direction of the conversion rate : are you going from a smaller to a larger unit, or from a larger to a smaller unit ?

if we would have said

1 m = 0.001 km

then we would have converted 786.3 m by multiplying it by 0.001 (also getting 0.7863 km as result, of course).

but because we defined it the other way around, we had to divide by 1000. it is clear that this is the same operation, yes ?

in the same way, if we would have said

1 mile = 1.60934 km

then we would have converted 40 km to miles by dividing 40 by 1.60934. again getting the same result, of course.


Related Questions

Im dum i really need help

Answers

Answer:

T' = (-4, 0)

S' = (-4 , -10)

U' = (3 , 0)

V' = (3, -10)

Step-by-step explanation:

Find the midpoint of the line segment.

Answers

midpoint of the line segment is (1/2 , -3)

A midpoint of a line segment is the point on a segment that bisects the segment into two congruent segments.

Let (a1, b1) and (a2, b2) be the ending point of the line segment. The midpoint formula of a line segment joining these two points is given as:

(a , b ) = ((a₁ +a₂)/2 , (b₁ +b₂)/2)

Here ,

a₁ =-2

a₂=3

b₁=-1

b₂= -5

(a , b ) = ((-2 +3)/2 , (-1 -5)/2)

(a , b ) = (1/2 , -3)

midpoint of the line segment is (1/2 , -3)

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What is the height, h, of the rectangular prism shown below?
Round your answer to the nearest tenth.

Answers

The height (h) of this rectangular prism is equal to 3 units.

What is Pythagorean theorem?

Pythagorean theorem can be defined as a mathematical expression in Euclidean geometry that can be used to solve for any of the three (3) side lengths of a right triangle.

How to determine the height (h) of this rectangular prism?

In order to determine the height (h) of this rectangular prism, we would first of all determine the diagonal of the base by applying Pythagorean theorem:

d² = l² + b²

d² = 4² + 3²

d² = 16 + 9

d² = 25

d = √25

d = 5 units.

Therefore, the diagonal of the base of this rectangular prism is equal to 5 units.

Now, we can determine the height (h) of this rectangular prism:

x² = d² + h²

h² = √34² - 5²

h² = 34 - 25

h² = 9

h = √9

Height, h = 3 units.

Therefore, the height (h) of this rectangular prism is equal to 3 units.

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Choose the numbers that are equivalent to 2 7/9.

Answers

The equivalent fractions here are: 14/18 ,  21/27 , 28/36 , 35/45 , 42/54.

Given, the number 7/9

7/9 = (7/9 × 2/2) = 14/18

7/9 = (7/9 × 3/3) = 21/27

7/9 = (7/9 × 4/4) = 28/36

7/9 = (7/9 × 5/5) = 35/45

7/9 = (7/9 × 6/6) = 42/54

hence the equivalent fractions here are:

14/18 , 21/27 , 28/36 , 35/45 , 42/54

Equivalent fractions are those fractions that reflect the same value even if they may have distinct numerators and denominators. For instance, the fractions 9/12 and 6/8 are comparable as both, when simplified, equal 3/4.

When reduced to their most basic form, all equivalent fractions become the same fraction.

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Decide whether the following statements are always, sometimes, or never true.If n is a real number, then 0n=0 .

Answers

The following statement that if n is a real  number, then 0n = 0 is always true.

The given question states that we have to determine whether the given statement is always true or sometimes true or never true.

The statement given in this question is that if n is a real number, then 0 n = 0.

To solve this question, it us important that we are familiar with real numbers.

Real numbers comprise of both rational numbers as well as irrational numbers. Rational numbers include natural number, whole numbers, fractions, etc. while irrational numbers consist of recurring decimal numbers such as √3, pi, etc.

We know that any real number multiplied with 0 will always return 0 as the answer.

Hence, we can say that the statement that if n is a real number, then 0 n = 0 is always true.

Therefore, we get the following statement that if n is a real number, then 0n = 0 as always true.

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I am equivalent to 1 3/4 and as an improper
fraction my numerator is 9 more than my
denominator. What am I?

Answers

Answer:

21/12

Step-by-step explanation:

1 3/4 in improper form is 7/4

7 is not 9 more than 4 so its another equivalent

7/4 × 2/2 = 14/8

That isn't 9 more than the denominator either

7/4 × 3/3 = 21/12

21 - 12 = 9 so 21 is greater than 12 by 9.

Combine these radicals 3[/2] - 5 [/2]

Answers

On combining the radicals 3[tex]\sqrt{2}[/tex] and -5[tex]\sqrt{2}[/tex] we get the answer

- 2[tex]\sqrt{2}[/tex].[tex]\sqrt{2}[/tex]

Square Root : The root of a number in math is a number that when multiplied by itself produces the original number. For example, the square root of 49 is 7 because 7×7=49. In this case, because 7 is multiplied by itself twice to produce 49, we call 7 the square root of 49.

Given are the two radicals 3[tex]\sqrt{2}[/tex] and -5[tex]\sqrt{2}[/tex]

Explanation:

Subtracting both the numbers, we get

= 3[tex]\sqrt{2}[/tex] + (- 5[tex]\sqrt{2}[/tex])

opening brackets, we get

= 3[tex]\sqrt{2}[/tex] - 5[tex]\sqrt{2}[/tex]

Taking common [tex]\sqrt{2}[/tex] from both the digits, we get

= ( 3 - 5 )  [tex]\sqrt{2}[/tex]

On subtracting, we get

= - 2[tex]\sqrt{2}[/tex]

Therefore, on combining the radicals 3[tex]\sqrt{2}[/tex] and -5[tex]\sqrt{2}[/tex] we get the answer

- 2[tex]\sqrt{2}[/tex].

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14 inches of wire costs 56 cents.
At the same rate, how many inches of wire can be bought for 28 cents?

Answers

[tex]\huge\boxed{7\ \text{inches}}[/tex]

We're trying to find how many inches of wire can be purchased with 28 cents, so we'll start by finding how much wire can be bought with just one cent.

This amount will be represented with [tex]w[/tex].

[tex]14=56w[/tex]

Divide both sides of the equation by 56.

[tex]\dfrac{14}{56}=w\\\\\dfrac{1}{4}=w[/tex]

Now, we'll multiply this value by 28 cents to find the final answer.

[tex]\dfrac{1}{4}\cdot28=\boxed7[/tex]


Solve. Check for extraneous solutions. (2 x+3)¹/₂-7=0

Answers

No extraneous solution to the equation.

The equation is

[tex](2x + 3)^{1/2}[/tex] - 7 = 0

To find whether the equation has an extraneous solution, first we have to find the value of x.

[tex](2x + 3)^{1/2}[/tex] = 7

Squaring both sides, we get

2x + 3 = 49

2x = 46

x = 23

Now put the value of x in the equation,

[tex](2 * 23 + 3)^{1/2}[/tex] - 7 = 0

[tex](46 + 3)^{1/2}[/tex] - 7 = 0

[tex]49^{1/2}[/tex] - 7 = 0

7 - 7 = 0

0=0

Therefore we get that there is no extraneous solution to the equation, x= 23 is the solution of the equation.

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need help with this equation

Answers

The solution for the variable a in the fraction equation given as 1/12a - 1/2 = -1/8 is 9/2

How to solve for a in the fraction equation?

The fraction equation is given as

1/12a - 1/2 = -1/8

Add 1/2 to both sides of the equation

So, we have

1/12a = 1/2 - 1/8

Take LCM and evaluate the sum

1/12a = (4 - 1)/8

Evaluate the difference

1/12a = 3/8

Multiply both sides of the equation by 12

So, we have

a = 9/2

Hence, the solution for the variable a in the fraction equation given as 1/12a - 1/2 = -1/8 is 9/2

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I NEED HELP MARKING BRAINLIEST

Answers

Answer:

15/36

Step-by-step explanation:

Multiply the top and bottom factors together, i.e.,

3 x 5

4 x 9

this ends up with the answer 15/36.

Answer:

5/12 = 0.416666667

Factor:

5/2^2.3 = 0.416666667


You can model time t , in seconds, an object takes to reach the ground falling from height H , in meters, by t(H)=√2H/g . The value of g is 9.81 m/s². If an object takes 7 seconds to fall to the ground, what was its initial height?

Answers

The height of the building is 240.34m

Since we are given t=√2h/g

By Squaring both sides we get simplifies equation as t²=2h/g

We are given the value of t as 7 and value of g as 9.81

Putting these values in the simplified equation we get

h=49×9.81/2

h=240.34m

Hence the height of the building is 240.34m

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Please help, how do I know if it’s a function or not a function?

Answers

Answer:

It is not a function because the number 1 repeats twice (If the numbers in the domain repeat then it is not a function)

-14 > w+ 3 or 3w 2-27
How do i solve

Answers

Answer:  w< -17

Step-by-step explanation:

help me please !!!!!!!!!!!!!!!!!!!!!!!11

Answers

Answer:

Step-by-step explanation:

f. 20.5-13.71= 6.79

g. 71.23-36.57-17.89= 16.77

h. 50.147-19.05-7.61= 23.487

i. 92.38-57.25-16.3= 18.83

j. 44.08-17.9-9.06= 17.12

Katie and Jill currently share a dresser, and each would like to have one of her
own. As a valued member at the local furniture store, you receive an additional
discount off each purchase. Calculate the amount of discount off each item. (2
points)
17% off a $35 dresser
12% off a $32 dresser
20% off a $55 bookshelf
12% off a $22 mirror

Answers

Answer: A

explain: because 17 = 35

The solution set of |2x − 2| > 2 is the set of all x-values where the graph y = |2x − 2| ? the line y = 2.
a.)is above
B.)is below
c.)intersects
d.) does not intersect
!100! POINTS!!!!!!

Answers

Answer:

a.)

Step-by-step explanation:

|2x - 2| > 2 (greater than 2)

the dilution set is the set of all x values, for which this inequality is true.

and that means

|2x - 2| has to have greater value than the value 2, which is represented by the constant, horizontal line y = 2.

the y values are aligned with the y-axis, which goes up and down. the higher up, the larger the y value.

so, only the values of |2x - 2| higher than 2 keep the inequality true.

so, a.) is the right answer. it is above the line.

b.) below would mean "< 2".

c.) intersects would mean "= 2".

d.) does not intersect would mean "<> 2".

please consider, the intersection points with the line are NOT included, because we have "> 2".

if we had to include the intersection points, it would have to be ">= 2".

7x(92+7) = (7x92)+(7x_)

Answers

Answer:

7

Step-by-step explanation:

7x(92+7) = 693

(7x92) = 644

(7x92) +

(7x7) = 49

644 + 49 = 693

Change the statement “eighteen to the fourth power” to a numerical expression.

Answers

Step-by-step explanation:

18^4 (18 with a smaller 4 on the top right corner)

Formula the vertex is located at (8.33, 236.67). what does this point represent in context?

Answers

It depends on the situation being modeled.

Assuming the vertex (8.33,236.67) is on a quadratic curve modeling height of an object in feet after t seconds.

Then t=8.33s is the time when the object reached the maximum height.

The maximum height is the y-value of the vertex, which is 236.67 feet.

In such a case the quadratic curve opens downwards.

The vertex is then the maximum point on this curve.

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Answer:

It means that the maximum of the graph is the total daily profit from the soccer balls, and can be maximized by selling them for 8.33$

You can copy this into the text box, you will get the correct answer w/ full response.
EDGE2022; Good Luck!!! :D

complete :
i⁶⁴ = ....​

Answers

first off let's recall that 4³ = 64, and that i⁴ = 1, so

[tex]i^{64}\implies i^{4^3}\implies i^{4\cdot 4\cdot 4}\implies i^{4\cdot 16}\implies (i^4)^{16}\implies (1)^{16}\implies \text{\LARGE 1}[/tex]

MATH homework if someone can help

Answers

Step-by-step explanation:

[tex]7x < 67 - 32 \\ 7x < 35 \\ \frac{7x}{7} < \frac{35}{7} \\ x < 5[/tex]

for what values of positive integers n is (n-11)(n-13) prime?

Answers

The values of positive integers n (n-11)(n-13) prime would be 6 and the solution are; 5 and 7.

What is prime factorization?

Factorization is expressing a mathematical quantity in terms of multiples of smaller units of similar quantities.

For an integer, factorization is decomposition of that integer in terms of smaller integers which when multiplied with each other give back that considered number. Those composing integers are called factors of that considered integers.

The Prime factorization is when all those factors are prime numbers.

Since prime factorization expresses an integer in terms of multiples of prime numbers.

Prime factorization is unique for each integer.

The value of n would be 6

(n-11) = 6- 11 = 5

(n-13) = 6 - 13 = 7

Therefore, the  values of positive integers n (n-11)(n-13) prime would be 6.

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Find the mistake made in the steps to solve the equation.

Answers

The answer is b. The best answer choice for your equation seems to be the second option b.

The left and right page numbers of an open book are two consecutive integers whose sum is 427. Find these page numbers.

Answers

The page number of left page is 213

The page number of right page is 214.

Given,

The left and right page numbers of an open book are two consecutive integers.

We can take:

The left page number = n

The right page number = n + 1

The sum of the page numbers = 427

That is,

n + (n + 1) = 427

We can solve this equation:

n + (n + 1) = 427

2n + 1 = 427

2n = 427 -1

2n = 426

n = 426/2

n = 213

n + 1 = 213 + 1 = 214.

Therefore,

The left page number is 213 and right page number is 214.

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Write a rational expression that would produce the following number line

Answers

A rational expression that would produce the given number line is f(x) = 1 /[(x + 4) · (x - 1) · (x - 3)].

How to derive a rational equation that observe the sign characteristics on the number line

Rational equations are equations of the form P(x) / Q(x), where P(x) and Q(x) are polynomials representing the numerator and the denominator of the expression. In this problem we assume a rational equation where P(x) = 1 and Q(x) is polynomial in factored form, where each root represents an indetermination. Then, we derive the following rational expression that observes the sign behavior on the number line:

f(x) = 1 /[(x + 4) · (x - 1) · (x - 3)]

This expression guarantees the sign behavior:

f(x) < 0 for x < - 4.f(x) > 0 for - 4 < x < 1.f(x) < 0 for 1 < x < 3.f(x) > 0 for x > 3.

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The wavelength of ultraviolet light is about 0.00000003 inches. Which number best approximates this length as a power of 10?

A. 3 × 10–9


B. 3 × 107


C. 3 × 10–8


D. 3 × 10-7

Answers

Letter C is the answer

I NEED HELP ASAP!!!
Which of the following expressions represents “the difference between a number and eleven”?

11 – n
-11 n
n + 11
n – 11


All of the following represent the same concept except _____.

a number minus five
five more than a number
the sum of a number and five
a number increased by five
thank you!!

Answers

The difference between a number (n) and eleven is written as;

⇒ 11 - n

The exception statement is;

''a number minus five''

What is Number system?

A system of writing to express the number is called number system.

Now, Let a number is 'n'

Then, The difference between a number (n) and eleven is,

11 - n

And, Find the mathematical expression of all the statement as;

Let x is a number.

1. a number minus five = x - 5

2. five more than a number = x + 5

3. the sum of a number and five = x + 5

4. a number increased by five = x + 5

So, Clearly the exception statement is;

''a number minus five''

Therefore, The difference between a number (n) and eleven is written as;

⇒ 11 - n

The exception statement is;

''a number minus five''

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I need serious help. Algebra 1.Please Help.

Answers

Answer:

Step-by-step explanation:

a:) Solve for b:

a = b/c^2

a = b/c^2 is equivalent to b/c^2 = a:

b/c^2 = a

Multiply both sides by c^2:

Answer: b = a c^2 = Dark Green

part 2) a = b/c^2 where a = 1/8, c = 4

b = 2

____________________________________________

b:) Solve for v:

-v + m = k

Subtract m from both sides:

-v = -m + k

Multiply both sides by -1:

Answer: v = m - k = Light blue

part 2) m - v = k where k = -7, m = -2

v = 5

__________________________________________

c:) Solve for q:

p/q = r/s

Take the reciprocal of both sides:

q/p = s/r

Multiply both sides by p:

Answer: q = (p s)/r = yellow

part 2) p/q = r/s where p = 14, r = -7, s = -4

q = 8

The graph shows the height of a football after being thrown. Use the graph to estimate the x- and y-intercepts of the function, where the function is positive and negative, and interpret the meanings in the context of the situation.

Answers

From the graphed function, it is found that:

The x-intercept is of 5. This means that the football will hit the ground after 5 seconds.The y-intercept is of 6. This means that at time 0, the football was at a height of 6 feet.The function is always positive, which means that the ball is in the air for 6 seconds.The graph shows that the function is never negative.

What are the intercepts of a function f(x)?

The x-intercept of a function f(x) is the value of x when the f(x) = 0, that is, the value of x when the function crosses the x-axis.The y-intercept of a function f(x) is the value of y when the x = 0, that is, the value of y when the function crosses the y-axis.

From this graph, it is found that:

The x-intercept is of 5. This means that the football will hit the ground after 5 seconds.The y-intercept is of 6. This means that at time 0, the football was at a height of 6 feet.

When a function is positive and when it is negative?

A function is positive when it is above the x-axis.A function is negative when it is below the x-axis.

Hence:

The function is always positive, which means that the ball is in the air for 6 seconds.The graph shows that the function is never negative.

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Circle or underline the correct answer 3- True or false: it is OK to leave your bags in the aisle 4- True or false: horseplay is fine before or after the lab 5- True or false: you do not need goggles or gloves for lab 6- True or false: you do not need to wash your hands after lab 7- True or false: it is OK to eat and drink in a lab class 8- True or false: it is OK to pour chemicals back into the bottle it came from 9-True or false: microscopes can be handled with one hand only 10-True or false: you do not need to read the instructions before lab 11-True or false: respect safety rules and guidelines when you say you have 10,000 dollars why do some people say they have 10k? where does the k come from? Jean loans Bernie $1500. Bernie agrees to pay Jean an extra $225when he repays the loan in one year. What is the annual simple interest rateof the loan? what is 2169 rounded to the nearest hundred Karen Gaines invested $11,000 in a money market account with an interest rate of 3.32% compounded semiannually.Seven years later,Karen withdrew the full amount to put toward the down payment on a new house.how much did Karen withdraw from the account The table below shows an income tax schedule, expressed in nominal terms, for the year 2014. a train startes from rest and accelerate uniformly until it attains a velocity of 8m/s in 10 seconds. calculate the acceleration of the train what is -5/12 x 8/13 in simplist form help with this project Which of the following is NOT a common CTSO?Group of answer choicesTSASkills USAHOSASCA The Blue Origin rocket ship starts vertically upward from the launch pad a constantacceleration of 6.3 m/sec2. How high does the rocket ship raise above the launchpad after 94 seconds of flight?Assume that the rocket ship moves vertically up all the time. Enter your answer inmeters (m). A survey finds that 110 people ate breakfast and 30 people skipped breakfast. Of those who atebreakfast, 10 people felt tired. Of those who skipped breakfast, 10 people felt tired. Make atwo-way table that shows the conditional relative frequencies based on the breakfast totals. If discontinued operations have a _____ effect on the income statement, they must be reported separately. please explain as much as you can. The junior class is renting a laser tag facility with a capacity of 325 people. The cost for the facility is $ 1200 . The party must have 13 adult chaperones.b. The class wants to promote the event by giving away 30 spots to students in a drawing. How does the model change? Now how many paying students must attend so the cost for each is no more than $ 7.50 ? A nonconforming unit of work is one that has no defects or errors. true/ false Coevolution can be seen between some plants and animals, like the yucca plant and the yucca moth. The flowers are shaped specifically so that only the tiny moth can pollinate them.If the yucca moth goes extinct due to climate change or other human-generated factors, what would be the likely outcome for the yucca plant?A new animal would evolve or adapt to take over the job of the yucca moth.The yucca plant would also go extinct.Humans would have to engineer a way to pollinate the plant.The yucca plant would evolve a new way to be pollinated. a tumor that arose in a balb/c mouse is transplanted into a c57bl/6 mouse but does not form a tumor in the latter. this is most likely due to differences between strains in Solve the inequality.-3s+7 8 or -2s+4212 Which system of equations is represented by the matrix below?[4 0 52 -117