3 years ago

Which expression represents the average of three test scores?

Mathematics

2 answers:

Elis [28]3 years ago

5 0

Answer:

Step-by-step explanation:

cccc

fomenos3 years ago

4 0

Answer:

It is C

Step-by-step explanation:

trust me ☜(ﾟヮﾟ☜)

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Solve the following systems of equations. Express your answer as an ordered pair in the format (a,b), with no spaces between the

kodGreya [7K]

Answer:

(4, 1)

Step-by-step explanation:

3x+4y=16 /*4

-4x-3y= - 19 /*3

12x + 16y = 64

- 12x - 9y = - 57

7y = 7

y = 1

3x+4y=16

3x + 4*1 = 16

3x = 16 - 4

3x = 12

x = 4

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3 years ago

Peggy had three times as many quarters as nickels. She had $1.60 in all. How many nickels and how many quarters did she have?. .

Andru [333]

Let

n-------> the number of nickels

q------> the number of quarters

we know that

$1\ quarter=\$0.25\\1\ nickel=\$0.05$

$0.05n+0.25q=1.60$ ----> equation A

$q=3n$ ----> equation B

substitute equation B in equation A

$0.05n+0.25[3n]=1.60$

$0.05n+0.75n=1.60$

$0.80n=1.60$

$n=2$

Find the value of q

$q=3*2=6$

therefore

The answer part a) is

the number of nickels are $2$ and the number of quarters are $6$

the answer Part b) is

The expressions that represents the number of quarters is

$q=3n$

5 0

3 years ago

Read 2 more answers

Which one is the greatest 2/5, 0.35 or 0.3

Tema [17]

0.35 is the answer of the questions

5 0

3 years ago

Solve the equation A+b - c =180 for C

spayn [35]

A = 180
b = 180
c = 180

180+180-180 = 180

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3 years ago

X+2y=12. what does x equal

PilotLPTM [1.2K]

Answer:

x = -2y + 12

Step-by-step explanation:

Let's solve for x.

x + 2y = 12

Step 1: Add -2y to both sides.

x + 2y + −2y = 12 + −2y

x = −2y + 12

4 0

3 years ago