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3 years ago

14

A group of friends were working on a student film. They spent $712 on costumes, which was 89% of their total budget. What was th

e total budget for their student film?

1 answer:

Anna11 [10]3 years ago

8 0

Answer:

800

Step-by-step explanation:

you divide 712 by .89

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Angela shared a cab with her friends. When they arrived at their destination, they evenly divided the

Paha777 [63]

Answer:

If they split $33 then you could say (x + 5)+11=16

If it was $333 then say (x+5) +111 =116

IF they split $3 then you say 2(1x-x) +5 = 6

Step-by-step explanation:

3 0

3 years ago

2x+5y=11 and 4x+3y=1 solve with elimination

storchak [24]

Multiply you first equation by 2 to get 4x + 10y = 22
Now the x terms can be eliminated and cancelled out using elimination.
4x + 10y = 22
4x + 3y = 1

To eliminate you need to "subtract", so you need to multiply one of the equations by -1.

4x + 10y = 22
-4x -3y = -1
------------------
0 + 7y = 21
y = 3

Now plug 3 into either one of the equations to get x.

7 0

3 years ago

Find the new amount given the original amount and the percent of change.

QveST [7]

So 45% of 35 is 16.2 so subtract 16.2 from 36 and you get A 19.2

4 0

3 years ago

the performance score of 10 adults is recorded, and the results are 83 87 90 92 93 100 104 111 115 121 find the standard deviati

luda_lava [24]

Answer:

The standard deviation of the data set is $\sigma = 12.7906$ .

Step-by-step explanation:

The Standard Deviation is a measure of how spread out numbers are. Its symbol is σ (the greek letter sigma)

To find the standard deviation of the following data set

$\begin{array}{cccccccc}83&87&90&92&93&100&104&111\\115&121&&&&&&\end{array}$

we use the following formula

$\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{X}\right)^2 }}{n-1} }$

Step 1: Find the mean $\left( \overline{X} \right)$ .

The mean of a data set is the sum of the terms divided by the total number of terms. Using math notation we have:

$Mean = \frac{Sum ~ of ~ terms}{Number ~ of ~ terms}$

$Mean = \frac{Sum ~ of ~ terms}{Number ~ of ~ terms}=\frac{83+87+90+92+93+100+104+111+115+121}{10} \\\\Mean = \frac{996}{10} =\frac{498}{5}=99.6$

Step 2: Create the below table.

Step 3: Find the sum of numbers in the last column to get.

$\sum{\left(x_i - \overline{X}\right)^2} = 1472.4$

Step 4: Calculate σ using the above formula.

$\sigma = \sqrt{ \frac{ \sum{\left(x_i - \overline{X}\right)^2 }}{n-1} } = \sqrt{ \frac{ 1472.4 }{ 10 - 1} } \approx 12.7906$

3 0

3 years ago

Which of the following is more than 0.35 but less than 0.41

Hoochie [10]

Its B because 3/10ths is a little bit more than 0.35, but way less than 0.41

6 0

3 years ago

Read 2 more answers