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Anna35 [415]
3 years ago
6

Sarah will take 8 algebra tests. On the first 7, Sarah's scores were 79, 86, 92, 89, 87, 80, and 82. What will Sarah need to sco

re on the 8th test to have an average grade of 86?
Mathematics
1 answer:
jenyasd209 [6]3 years ago
6 0

Answer:

Step-by-step explanation:

Let represent the score on Sarah's last test.

The average of her 8 test scores is 86.

This means:

(79+86+92+89+87+80+82+x)/8 =86

595+x=688

x=93

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Nookie1986 [14]
I think 180 that should be your answer sorry i did not get here quick enough

8 0
3 years ago
Find the difference 58.84 - 2.78​
VladimirAG [237]

Answer:

56.06

Step-by-step explanation:

 58.84

--  2.78

______

 56.06

I don't really know how else to explain this, but there ya go! Goodluck on your test or whatever you're doing! Stay safe ♥♥♥

8 0
3 years ago
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Help ASAP i need the answer to this question plsss NO LINKS AND NO DOING IT JUST FOR THE POINTS Will give brainliest and just be
Bond [772]

Answer:

1/4 -or- 4

Step-by-step explanation:

take the x-axis value 16 and divide by the other x-axis value, 4.

6 0
3 years ago
What THREE integers have a sum of 300?
quester [9]

Answer:

Here we will use algebra to find three consecutive integers whose sum is 300. We start by assigning X to the first integer. Since they are consecutive, it means that the 2nd number will be X + 1 and the 3rd number will be X + 2 and they should all add up to 300. Therefore, you can write the equation as follows:

(X) + (X + 1) + (X + 2) = 300

To solve for X, you first add the integers together and the X variables together. Then you subtract three from each side, followed by dividing by 3 on each side. Here is the work to show our math:

X + X + 1 + X + 2 = 300

3X + 3 = 300

3X + 3 - 3 = 300 - 3

3X = 297

3X/3 = 297/3

X = 99

Which means that the first number is 99, the second number is 99 + 1 and the third number is 99 + 2. Therefore, three consecutive integers that add up to 300 are 99, 100, and 101.

99 + 100 + 101 = 300

We know our answer is correct because 99 + 100 + 101 equals 300 as displayed above.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Celia uses the steps below to solve the equation Negative StartFraction 3 over 8 EndFraction (negative 8 minus 16 d) + 2 d = 24.
Troyanec [42]

The error in the steps is that In step 1, she should have also distributed -3/8  over –16d, to get 3 + 6 d + 2 d = 24

<h3>Simplifying linear equations</h3>

Given the following equation as shown below

-3/8(-8-16d)+2d = 24

Step 1 Distribute -3/8 over the expression in parentheses

3 + 6d + 2d = 24

Simply the like terms

3 + 8d = 24

Subtract 3 from both sides of the equation.

8d = 24 - 3

8d = 21

d = 21/8

Hence the error in the steps is that In step 1, she should have also distributed -3/8  over –16d, to get 3 + 6 d + 2 d = 24

Learn more on linear equation here: brainly.com/question/1884491

#SPJ1

3 0
2 years ago
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