Answer:
An elevator in a tall building starts at a floor of the building that is 102 meters above the ground. The
elevator descends 2 meters every 0.5 seconds
step by step solution
An elevator in a tall building starts at a floor of the building that is 102 meters above the ground. The
elevator descends 2 meters every 0.5 seconds for 9 seconds.
A room is 15 feet long and 12 feet wide. What are the length and width of the room in yards?
Answer:
15ft = 5 yards
12ft = 4 yards
Millie has a box of crayons. 30 of the crayons are red, 14 are green, and 16 are
blue. Millie randomly selects a crayon from the box, records the color and then
replaces the crayon in the box. If she selects a crayon 30 times, how many
times do you predict she will select a blue crayon?
6
07
0 10
08
Answer: i’m really not sure about this one but i think eight
Step-by-step explanation: if you calculate the probability of drawing a blue crayon you should get 16/60. if you’re drawing thirty times then multiply 16/60 by thirty and you get eight. sorry if this is incorrect hope this helped :D
Select all the expressions that are equivalent to 16x - 12 - 24x + 4
1) 4 + 16x - 12(1 + 2x)
2) 40x - 16
3) 16x - 24x - 4 + 12
4) -8x - 8
Answer:
(1) and (4)
Step-by-step explanation:
4 + 16x - 12(1 + 2x) = 4 + 16x - 12 - 24x
4 + 16x - 12 - 24x = 16x - 12 - 24x + 4
- 24x + 16x = -8x
- 12 + 4 = -8
Which creates -8x - 8
I’ll give you a huge virtual bear hug if you answer this right
The polygons are similar. Find the values of
the variables. Write an equation and solve,
showing ALL the work.
Answer:
x = 12, y = 8
Step-by-step explanation:
Since we know that the two triangles are similar that means we can find the ratio. The larger triangle is two times larger, we can find that out using 7/3.5 = 2. That means x + 4 = 2y and 3y = 2x. We can solve for y using substitution. We can double the first equation. 2x + 8 = 4y. We know that 2x = 3y so we can plug that in. 3y + 8 = 4y. Solving for y, gets us y = 8. Now we can plug that into any of the prior equations. I'll use 3y = 2x. 3(8) = 2x. 24 = 2x. Divide both sides by 2. x = 12.
Simplify 12 + (-4) - 2/5J -4/5j +5
Answer:
13 - 6j/5
Step-by-step explanation:
After simplification of the given equation, the value obtained is equal to (13 - 6j)/5.
What is Simplification?A phrase must be simplified and made shorter using a variety of methods. The steps required to decrease something are carried out according to a specified order known as BODMAS.
Make a fraction simpler by reducing it to the base form. If both the numerator and denominator of a fraction only include the integer, the fraction is considered to be in its basic form.
As per the data given in the question,
12 + (-4) -2/5j - 4/5j + 5
12 - 4 + 5 - 2/5j - 4/5j
13 - (2 - 4)j/5
= (13 - 6j)/5
To know more about Simplification:
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The time,
T
(seconds), it takes for a pot of water to boil is proportional to the amount,
A
(litres), of water.
It takes 180 seconds to boil 2.8 litres of water.
Work out how long it takes (to the nearest second) to boil 2.2 litres.
Answer:
The time it takes to boil 2.2 litres of water is approximately 141 seconds
Step-by-step explanation:
The given parameters are;
The relationship of the variables, T and A is a proportional, therefore, we have;
T ∝ A, or T/A = k = Constant of proportionality
The time it takes to boil 2.8 liters of water = 180 seconds
∴ When A = 2.8 litres, T = 180 seconds, from which we have;
k = T/A = 180 s/(2.8 L) = 450/7 s/L
k = 450/7 s/L
When A = 2.2 litres, we have;
T/A = k
∴ T = k × A
Plugging in the value for both 'k', and 'A' when A = 2.2 litres, gives;
T = k × A = 450/7 s/L × 2.2 L = 990/7 s = 141.[tex]\overline{428571}[/tex] s
The time it takes to boil 2.2 litres of water, given a direct proportionality relation is, T = 141.[tex]\overline{428571}[/tex] seconds ≈ 141 seconds given to the nearest second.
In which number does the digit 3 have a value that is 10 times as great as the value of the digit 3 in 143,728?
Complete question :
In which number does the digit 3 have a value that is 10 times as great as the value of the digit 3 in 143,728? 137,982 142,398 292,389 392,097
Answer:
137,982
Step-by-step explanation:
The value of digit 3 in 143, 728
3 in 143,728 is in the 1000 thousand place, hence, digit 3 has a value of :
3 * 1000 = 3000
Therefore, 10 times the value of digit 3 will be :
3000 * 10 = 30000
Feom the options given, we obtain the option where 3 has a value of 30000 if the number is expressed in expanded form:
The answer is 137,982
3 here is in the 10 thousand place = 3 * 10,000 =. 30,000
In a city, there are 8 public and 3 private swimming pools. On weekends, 5 of the pools are open.
Brendan says that the ratio of pools open on weekends to the total number of pools is 5:8. Cyndi says the ratio of
pools open on weekends to the total number of pools is 5:16.
*
Is either student correct? Use the drop-down menus to complete the statements.
est
ugh cle
st call
IS
There are Choose... pools open on the weekend out of the Choose... total pools. Choose...
correct. The ratio is Choose... to Choose... v
ou are
first !
olete
Will Be
suger
36 to air plain crashes
d
d
d
d
In the given figure, AC = BC, ∠DCA = ∠ECB and ∠DBC = ∠EAC. Prove that ΔDBC ≌ ΔEAC and DC = EC
Step-by-step explanation:
Here is your answer in the photo
Was it helpful?
comment down
If there is any kind of suspicious mistake
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Which expressions are equivalent?
I like your cut G!
Answer:
b
Step-by-step explanation:
25 points. Which problem will graph as shown?
A) 3x - 5 ≥ -14
B) 3x - 5 ≤ -14
C) 3x - 5 > -14
D) 3x - 5 < -14
Answer:
D
Step-by-step explanation:
We can work backwards.
First, notice that we have an open circle. So, we do not have "or equal to." So, we can ignore A and B.
Our final answer is all values less than -3. So:
[tex]x<-3[/tex]
We can multiply both sides by 3:
[tex]3x<-9[/tex]
And then subtract 5 from both sides:
[tex]3x-5<-14[/tex]
So, the answer that matches this will be D.
Instead of working backwards, you can also just solve each inequality. Since we have an open circle, we only need to solve C and D. If we solve C, we get x > -3, and if we solve D, we get x < -3 (as desired). So, D matches the graph shown.
what is -4m^3/10n ÷ 2m^2/5n
Answer:
-m[tex]n^{2}[/tex]
Step-by-step explanation:
earth's equator has a diamter of 7926.4 miles. which equation can be used to find the circumference of earth at the equator?
Answer:
To find the circumference you need to use C= 2πr but since you started with the diameter you need to divide it by 2 and you will get 3963.2. After you get the radius use the formula C= 2πr and you will get 24901.52
The equation would be written as 2 x π x 3963.2 = 24901.52
what is the number that is two more than one-tenth of one-fifth of one-tenth of 2,000
Answer:
6
Step-by-step explanation:
2 + (1/10)(1/5)(1/10)2000 = 2 + (1/500)(2000) = 2 + 4 = 6
The number that is two more than one-tenth of one-fifth of one-tenth of 2,000 will be 6.
What are the ratio and proportion?The ratio is the division of two numbers while multiplication is an operation in mathematics to multiply two or more values to get a multiplied number.
Proportion is the relation of a variable with another. It could be direct or inverse.
The one-tenth of x = (1/10)x similarly
one-tenth of one-fifth of one-tenth = (1/10)(1/5)(1/10)
So one-tenth of one-fifth of one-tenth of 2,000 = (1/10)(1/5)(1/10) ×2000
⇒ 2000/500 = 4 Now the question is saying 2 more hence
⇒ 4 + 2 = 6 hence six will be the correct answer.
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I need help on this question
What's the square root of 7
Answer:
2.645
Step-by-step explanation:
Answer:
[tex] \sqrt{7} = 2.65[/tex]
while shooting Baskets at a basketball hoop you make 36 out of 80 shots your friend makes 43.75 percent of the shots who made a higher percent
Answer:
The 'your friend' made a higher percentage of shots .
Step-by-step explanation:
80 - 43.75 = 36.25
80 is the total amount
36 (36.25) is YOUR amount
43.75 is 'your friends' amount
and with the equation I shows at the top 'your friend' has the higher number of percent from the shots compared to you
I hope this helps!
algebraic fractions
x² + 5x+4 /
x²+ 4x + 3
Answer:
[tex]\frac{x+4}{x+3}[/tex]
Step-by-step explanation:
Given
[tex]\frac{x^2+5x + 4}{x^2+4x+3}[/tex] ← factor numerator and denominator
= [tex]\frac{(x+1)(x+4)}{(x+1)(x+3)}[/tex] ← cancel common factor (x + 1) on numerator/ denominator
= [tex]\frac{x+4}{x+3}[/tex]
Can somebody explain why 8/17 is correct. Will make brainliest.
Answer:
8/17 is correct because cosine = adjacent/hypotenuse, and since angle A is theta, or the reference angle, the adjacent of A would be 8, and the hypotenuse is always across the right angle.
15/17 would be sine instead of cosine
at point (0,2) can be reflected across the x-axis PLEASE HELP 50 POINTS true pr false
Answer:
Please check the explanation.
Step-by-step explanation:
When a point P(x, y) is reflected across the x-axis, all we need to do is to reverse the sign value of the y-coordinate of any given point while the x-value remains the same.
Thus,
The rule to reflect over the x-axis is:
P(x, y) → P'(x, -y)
In our case, the point, let's say A(0, 2), is reflected across the x-axis. Thus, the coordinates of A' will be:
P(x, y) → P'(x, -y)
A(0, 2) → A'(0, -2)
So, YES! point A(0,2) can be reflected across the x-axis and the coordinates of A' will be: A'(0, -2).
PLEASE HELP ME ASAP?!?(2questions) 60POINTS+BRAINLIEST
Find the missing side lengths using your notes on the 45-45-90 and 30-60-90 special triangles.
It says that there was an error with my answer, but I don't know what, so I screenshotted what I typed and attached them as 4 images below:
10-x=-2x what is it ???
Answer:
x = - 10
Step-by-step explanation:
Given
10 - x = - 2x ( add 2x to both sides )
10 + x = 0 ( subtract 10 from both sides )
x = - 10
52 – 18+(2 * 8) = 4
I don’t know what the answer is
Answer:
er i think its 50 ≠ 4
Step-by-step explanation:
...
If you know this please answer all fake answers will be reported thanks
Answer:
50.24 inches
Step-by-step explanation:
[tex]3.14 * 4^{2}[/tex]
3.14 * 16
= 50.24
Question 4 A triangle has two sides that are 8 cm and 13 cm. What could be the length of the triangle's third side? Select three that apply. А 5 cm B 10 cm С 17 cm D 20 cm E 21 cm F 24 cm
know what is the third side length
the difference between the 2 other sides < the greatest side of triangle < the sum of 2 other sides
so here the answers here could be ( 10- 17 - 20)
10-8 < 13 < 10+8
13-8 < 17 < 13+8
13-8 < 20 < 13+8
What is the coefficient in the expression 3n + 1
which of the following shows a table of equivalent ratios?
plzzz help me with and i will give u a brainliest
solve a variable source
x-7=15
Answer:
x = 22
Step-by-step explanation:
x = 7 + 15
x = 22
Answer:
x = 22
Step-by-step explanation:
1x - 7 = 15
1x = 15 + 7
1x = 22 (divide both sides by the first number/1 to get x)
1x/1 = 22/1
x = 22
Have a great day!!
Solve the system of equations. 5x−4y=−10 -4x + 5y = 8
Answer:
x= -2 y=0
Step-by-step explanation: