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Anit [1.1K]
2 years ago
10

Desiree's test scores are 77, 90, 66, and 82.

Mathematics
1 answer:
mart [117]2 years ago
4 0
500 * .8 = 400

77 + 90 + 66 + 82 = 315

400 - 315 = 85 needed on next test
You might be interested in
How many ways can 6 people be chosen and arranged in straight line if there are 8 people to choose from? a. 48.b. 720.c. 20, 160
Ipatiy [6.2K]

Answer:

<h2>C. <em>20,160</em></h2>

Step-by-step explanation:

This question bothers on permutation since we are to select a some people out of a group of people and then arrange in a straight line. If r object are to be arranged in a straight line when selecting them from n pool of objects. This can be done in nPr number of ways.

nPr = n!/(n-r)!

Selection of 6 people out of 8 people can therefore be done in 8C6 number of ways.

8P6 = 8!/(8-6)!

8P6 = 8!/2!

8P6 = 8*7*6*5*4*3*2!/2!

8P6 = 8*7*6*5*4*3

8P6 = 56*360

8P6 = 20,160

<em>Hence this can be done in 20,160 number of ways</em>

5 0
3 years ago
Can you subtract 8 tenths from 1 tenth?​
Rudiy27

Answer:

Not if you want it to be a positive number. You can but it will be a negative.

Step-by-step explanation:

3 0
3 years ago
The functions r and s are defined as follows. r(x)=-x-5 s(x)= -2x-5 . Find the value of s(r(4)).
Svet_ta [14]

Answer:

s(r(4)) = 13

Step-by-step explanation:

Substitute and calculate:


s(r(4)) = 13

6 0
2 years ago
Divide: −72 ÷ 9 = A) −8 B) −7 C) −6 D) 7
Lisa [10]

Answer:

-8

Step-by-step explanation:

-72 / 9 = -8

7 0
2 years ago
Read 2 more answers
Write in numeric form. Nine hundred thirty six and twelve hundredths
4vir4ik [10]
That would be... 936.12
3 0
3 years ago
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