1 year ago

What mistake did this student make?

Mathematics

1 answer:

Novay_Z [31]1 year ago

7 0

X=-2 not 2.

EXPLANATION:

x-2y=12
-3x+y=-1
x-2y=12
2(-3x+y)=-1
x-2y=12
-6x+2y=-2
-5x=10
5x/-5=10/-5
x=-2

You might be interested in

Peters glasses each hold 8 fluid ounces how many glasses of juice can peter pour from a bottle that holds 2 quarts

kotykmax [81]

He can pour 8 glasses

5 0

2 years ago

Read 2 more answers

Which expression shows the correct way to find the distance between<br> (23,17) and (43,14)? ( TTM)

Lesechka [4]

Answer:

d= $\sqrt{x} (43-23)^2+(14-17)^2$

Answer= 20.224

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

I have five numbers, the mean is 6, and the mode is 7 what could these numbers be?

storchak [24]

Answer:

3, 5, 7, 7, 8

Step-by-step explanation:

3, 5, 7, 7, 8

the mean = (3+5+7+7+8)/5 = 30/5= 6

the mode = 7

4 0

2 years ago

at one store 3 sweaters cost $44.99 and at a store next door the same sweater costs $52.00 for 4 which store has the better deal

Liono4ka [1.6K]

Answer:

The first store

Step-by-step explanation:

3sweaters->$44.99

4sweaters->x

x=4×44.99/3 x=$59.98

3sweaters->$52.00

4sweaters->x

x=4×52/3 x=$69.33

first store<second store

59.98<69.33

8 0

2 years ago

(a) Make a scatter plot of the data in the table given to the right.<br> (b) Find a power function that models the data.<br> (c)

WITCHER [35]

Answer:

Step-by-step explanation:

The graph will move from right to left in ascending order

3 0

1 year ago