All categories

3 years ago

Lucy took three tests. If her median score was 86, her mean score was 87, and the range was 13, what were her three test scores?

Mathematics

1 answer:

sveticcg [70]3 years ago

3 0

x+82+y
______________ =87
3
y-x=17
87,98, and 82.

You might be interested in

4. There are seven days in a week. How many days are there in 16 weeks?

lesya692 [45]

Answer:

There are 112 days in 16 weeks

8 0

3 years ago

Find the area of a circle if the diameter is 13

horrorfan [7]

A=pi times radius times radius

13 divided by 2 equals to 6.5

A=3.14 times 6.5 times 6.5

A=132.665

hope it helps

Can you choose mine as the brainliest answer

4 0

3 years ago

What is the the slope that passes through the points (4,-7) and (9,1)

bulgar [2K]

Answer:

8/5

Step-by-step explanation:

We can use the formula for finding slope for this: $\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$\frac{1 - (-7)}{9 - 4}$

$\frac{8}{5}$

The answer would be 8/5

3 0

3 years ago

Read 2 more answers

Equation 1: 8x+2y=308x+2y=30

Tems11 [23]

Answer:

Part a) We should try to eliminate the y's because the coefficients are the same

Part b) The solution is the point (6,-9)

Step-by-step explanation:

Part a) Which variable pair should we try to eliminate?

we have

$8x+2y=30$ ----> equation 1

$7x+2y=24$ ----> equation 2

Solve by elimination

We should try to eliminate the y's because the coefficients are the same

Part b) What is the solution to the system?

Multiply equation 2 by -1 both sides

$-1(7x+2y)=-1(24)$

$-7x-2y=-24$ -----> equation 3

Adds equation 1 and equation 3

$8x+2y=30\\-7x-2y=-24\\-------\\8x-7x=30-24\\x=6$

Find the value of y

$8x+2y=30[/tex[tex]8(6)+2y=30$

$2y=30-48$

$y=-9$

The solution is the point (6,-9)

8 0

3 years ago

For centuries, mathematics seemed to exist in service to the natural sciences. Many of the great mathematical breakthroughs, lik

adell [148]

Answer:

b,d

Step-by-step explanation:

4 0

3 years ago