Please help I need to know this

Answer:

i think it c im not sure though I tried my best to figure the answer out. pls dont get mad if its wrong.

Answer:

A

Step-by-step explanation:

20xday will help determine how many she reads, the +52 will allow us to account for the 52 she a;ready read.

Writing 2,000 words will take about 50 minutes for the average writer typing on a keyboard and 1.7 hours for handwriting.

Answer:

5 hours. the response has to be 20 characters long.

The simplification of 4+√12 / 4-√12 after rationalizing all denominators

is 7+4[tex]\sqrt{3}[/tex]

We are given the equation;

[tex]\frac{4+\sqrt{12} }{4-\sqrt{12} }[/tex]

The above equation can also be written as;

[tex]\frac{4+\sqrt{4*3} }{4-\sqrt{4*3} }[/tex]

Since our question requires us to rationalize the denominator, we will use the initial equation to rationalize the denominator. That is;

[tex]\frac{4+\sqrt{12} }{4-\sqrt{12} }[/tex]  *  [tex]\frac{4+\sqrt{12} }{4+\sqrt{12} }[/tex]

We then simplify;

4(4+[tex]\sqrt{12}[/tex])+[tex]\sqrt{12}[/tex](4+[tex]\sqrt{12}[/tex]) /  4(4+[tex]\sqrt{12}[/tex])- [tex]\sqrt{12}[/tex](4+[tex]\sqrt{12}[/tex])

= 16+4[tex]\sqrt{12}[/tex]+4[tex]\sqrt{12}[/tex]+[tex]\sqrt{12*12}[/tex] / 16+4[tex]\sqrt{12}[/tex]-4[tex]\sqrt{12}[/tex]-[tex]\sqrt{12*12}[/tex]

= 16+8[tex]\sqrt{12}[/tex]+12 /16-12

=28+8[tex]\sqrt{12}[/tex] / 4

=28+8[tex]\sqrt{4*3}[/tex] /4

= 28+8*2[tex]\sqrt{3}[/tex] /4

=28+16[tex]\sqrt{3}[/tex] /4

Divide all sides by 4;

= 7+4[tex]\sqrt{3}[/tex]

The final answer is therefore; 7+4[tex]\sqrt{3}[/tex]

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Answer:

Step-by-step explanation:

 The system of equations does not have one solution because the lines will never intersect.

in the given figure the value of x is 45°.

In Plane Geometry, a figure which is formed by two rays or lines that shares a common endpoint is called an angle and corner whether constituting a projecting part or a partially enclosed space.

Given:

<PQR= x+7

<SQR=x+3

<PQR+<SQR=<PQS=100°

According to given question we have

<PQR+<SQR=<PQS

Put the value we get

x+7+x+3=100

Compare like terms we get

2x+10=100

Substract 10 from both sides we get,

2x=90

Divide 2 on both sides we get,

x=45°

Therefore, in the given figure the value of x is 45°.

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On average, the number of miles the athlete ran per day is; 18/5 or 3.6 miles per day

We are given;

Number of days the athletes ran = 3¹/₂ days = 7/2 days

Total distance ran in the given time = 12³/₅ miles = 63/5 miles

Now, the average distance will simply be given by the expression;

Average Distance = Total Distance/Number of days of running

Now, let us convert the fractions to improper fraction for easy division. Thus, we have;

Number of days the athletes ran = 7/2 days

Total distance ran in the given time = 63/5 miles

Thus;

Average Distance = (63/5)/(7/2)

Average distance = 63/5 * 2/7 = 18/5 = 3.6 miles per day

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The slope-intercept form of the line passing through the two points is

y = 4x + 33

Slope-intercept equation is one of the special forms of the linear equation.

To find the slope,

The point-slope formula is used to find the slope

y₂-y₁ = m (x₂-x₁)

where (x₁,y₁) and (x₂,y₂) are (-9,-3) and (-7,5), Then

5 - (-3) = m [-7 - (-9)]

5 + 3 = m (-7+9)

8 = m(2)

m = 8/2

m = 4

Therefore, the slope of the line passing through two points is 4

To find the intercept,

We can use the slope intercept formula to find the intercept

y = mx + b

where (x,y) be (-9,-3) abd m = 4 , Then

-3 = 4(-9) + b

-3 = -36 = +b

b = 36-3

b = 33

Therefore, the intercept of the line passing through two points is 33

Thus, the slope intercept form of the line passing through the two points

(-9, -3) and (-7, 5) can be written as

y = 4x + 33

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The value of nine plus ten is 19

Mathematical operations are simply known as arithmetic operations used in solving algebraic problems and other mathematical calculations.

These operations include;

In this case, we have;

nine plus ten

This is expressed as;

9 + 10

The sum is 19

Thus, the value of nine plus ten is 19

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summing-up the values for equation of line y = x/2 + 1 in table :

x       y

-10   -4

-6    -2

-2     0

What is Algebraic expression ?

Algebraic expressions are the idea of expressing numbers using letters or alphabets without specifying their actual values. The basics of algebra taught us how to express an unknown value using letters such as x, y, z, etc. These letters are called here as variables. An algebraic expression can be a combination of both variables and constants. Any value that is placed before and multiplied by a variable is a coefficient.

Here, the given equation is :

y = x/2 + 1

Now, computing the value of y corresponding to values of x by substituting values in above equation :

when x = -10 :

y = x/2 + 1

y = -10/2 + 1

y = -5 +1

y = -4

similarly, for :

x = -6 , y = -2

x = -2 , 0

summing-up the above values in table that is attached below :

x       y

-10   -4

-6    -2

-2     0

⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻

Now to draw the line graph of above equation taking any two coordinates let us say (-2,0) and (-2,-6). Now drawing the line joining these two points as shown in figure attached below.

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Answer: 8.25 inches per hour

Step-by-step explanation: 99/12 = 8.25

Step-by-step explanation:

lily's in months=4/12

hugos in months=8/12

4/12+8/12

1/3+2/3

lily's month in simplest form=1/3

hugos month in simplest form=2/3

Answer:

it adding

Step-by-step explanation:

Answer:

The number is 15

Step-by-step explanation:

x = a number

4/3 x - 12 = 8

Rearrange the equation so that the integers are on one side - in the format Ax = B

4/3 x - 12 = 8

4/3 x = 8 + 12

4/3 x = 20

Simplify the equation - in the format x = A - then solve for x

4/3 x = 20

4 x = 20 * 3

4 x = 60

x = 60 / 4

x = 15

[tex] \large \bf \implies{A\: number\: is\:15}[/tex]

A number is x

then we have [tex]\frac{4}{3}[/tex]x - 12 = 8

[tex] \bf \longrightarrow \frac{4}{3}x - 12 = 8 \\ \\ \bf \longrightarrow \frac{4}{3}x = 8 + 12 \\ \\ \bf \longrightarrow \frac{4}{3}x = 20 \\ \\ \bf \longrightarrow 4x = 20 \times 3 \\ \\ \bf \longrightarrow4x = 60 \\ \\ \bf \longrightarrow x = \frac{ \cancel{60}}{ \cancel{4} } \\ \\ \bf \longrightarrow \: x = 15[/tex]

'Four thirds of the number is [tex]\frac{4}{3}x[/tex] then decreased by 12 is [tex]\frac{4}{3}x - 12[/tex] then gives the result 8. That is [tex]\bf\frac{4}{3}x - 12 = 8[/tex]'

The probability to the nearest hundredth of a percent, the the password starts with a 9 and ends with a 6 is 1%.

A four digit password will have number ranging from 0-9.

There are four spots in total.

The first spot can not be taken by zero, so only 9 options can take the place of first spot.  As the number can not be repeated, the second spot has only options a 0-8. The third spot will eventually have 8 options only. The Fourth spot will have 7 options available to fill the spot.

Hence total number of 4-digit passwords combinations can be calculated by multiplying the options,

= 9 x 9 x 8 x 7

= 10206.

A total of 10206 passwords are possible.

The number of passwords starting from nine and ending with six can be found as,

= 1 x 9 x 8 x 1

= 72

A total of 72 passwords starting from 9 and ending with 6.

The probability that a password chosen is starting from 9 and ending with 6 is,

P(E) = 72/10206

P(E) = 0.007

Probability in percent,

= 0.007 x 100

= 0.7

Rounding it off, we get nearly 1%.

So, the probability is nearly 1%.

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Joy was charged the labor of 11 hours

Joy was charged a total of $1215 from the landscaper for listed parts and labor

He was charged $445 for listed parts

He was charged the rest for labor

The hourly rate for labor is $ 70

Let the number of hours worked by labor be x

so, we can form a linear equation here as 445 + 70x = 1215

Now we have to solve this linear equation

445 + 70x = 1215

70x= 1215 - 445

70x = 770

x = 770/ 70

x = 11

Therefore, 11 hours of labor was needed to complete the job.

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Answer:

125%

this is the answer in percent form

if we take 140 as the 100%, what is 175 off of it in percentage?

[tex]\begin{array}{ccll} amount&\%\\ \cline{1-2} 140 & 100\\ 175& x \end{array} \implies \cfrac{140}{175}~~=~~\cfrac{100}{x} \\\\\\ \cfrac{4}{5}=\cfrac{100}{x}\implies 4x=500\implies x=\cfrac{500}{4}\implies x=125[/tex]

According to the question, to calculate the zeros of each function. The given function is f(x) = [tex]x^{4}-5x^{2} +6[/tex]

Now, let us assume [tex]a=x^{2}[/tex]. Therefore, the above equation can be written as:

[tex]f(x)=a^{2}-5a+6[/tex]

Calculate the factors of the given equation and it can be re-written as:

[tex]f(x) = (a+2)(a+3)[/tex]

To calculate the final solution, equate it to zero.

[tex](a+2)(a+3)=0\\a=-2,-3[/tex]

Now, substitute these values in the original assumed equation:

The zeros function values are [tex]-\sqrt{2i};\sqrt{2i},-\sqrt{3i} ,\sqrt{3i}[/tex]

What is zero functions?

A zero function is a function which is almost zero everywhere on the graph. It is also known as a constant function.

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9.375 grams of fat are there in 3.75 servings.

A Nutrition Facts label lists the nutritional content, the serving size, and the calories for a recommended serving of a food product. This helps consumers make the best decision on how much to eat, maybe when they want to eat this food, or how they can better balance their food choices throughout the day.

Given the statement:

A nutrition label indicates that one serving of Apple crisp oatmeal has 2.5 grams of fat.

Determine the grams of fat in 3.75 servings.

In order to determine the grams of fat in 3.75 servings, we simply needed to multiply 2.5 grams by 3.75.

= (2.5 grams)×( 3.75)

= 9.375 grams of fat.

Thus , 3.75 servings contain 9.375 grams of fat ,if 1 serving contain 2.5 grams of fat .

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The rationalization of the given expression is  (xy²)¹/³ /y .

We have to rationalize the denominator of the expression ∛x / ∛y ,

where x and y are positive.

∛x / ∛y

= (∛x / ∛y) × (∛y / ∛y)

= ∛(x × y) / ∛(y × y)

= (∛xy)/ ∛y²

= (∛xy)/∛y²

= (xy²)¹/³ /y

The answer is  (xy²)¹/³ /y .

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Answer:

C=h+k+p

Step-by-step explanation:

You just add all of the variables and it equals your total cost. if it was by hour the equation would be slightly different

A function that models each inverse variation is y = 24. 1/x and y when x=-5 is -24/5

Those with inverse properties cancel each other out. In other words, f(g(x)) = g(f(x)) = x if g(x) is f's inverse (x). We have a great approach we can use to achieve this given an equation for which we desire the inverse.

Not every action has an equivalent. It is obvious that f(x) will never again have the same value if it has an inverse. We designate a unique name for this resource.

Inverse variation is y = k. 1/x

given y = 12

x = 2

So, 12 = k. 1/2

So, the value of k = 24

We can conclude that the value of constant variation is 24

when x = -5, the value of y will be -

y = k.1/x

y = 24 . 1/-5

y = -24/5

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Answer: 135°

Step-by-step explanation:

Since π = 180°

(3 × π)/ 4

Substitute 180° for π

= (3 × 180)/4

Simplify

= 540/4

= 135°

The value of the function at g(-2) is 18.

A function is defined a relation between two variables in such a way that the dependent variable y is related to the independent variable x.

To calculate a specific value of a function we substitute the given value in the expression of x thereby calculating the value of the function at that point.

Given function : g(x)=x²-7x

At x=-2 , written as g(-2) we put the value -2 in the expression of x.

∴g(-2)=(-2)²-7(-2)

or, g(-2)=4+14

or, g(-2)=18

Hence the value of the function at g(-2) is 18.

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