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zmey [24]
3 years ago
9

'How to solve: y=2x-2 y=-x+1 pelase help'

Mathematics
2 answers:
serg [7]3 years ago
3 0
\left\{\begin{array}{ccc}y=2x-2\\y=-x+1\end{array}\right\\\\2x-2=-x+1\\2x+x=1+2\\3x=3\\x=1\\\\y=-1+1=0\\\\Solution:x=1;\ y=0
masya89 [10]3 years ago
3 0
<span>If (2x-2) is equal to 'y', and (-x+1) is equal to 'y' then (2x-2) must be equal to (-x+1).

2x - 2 = -x + 1

Add 'x' to each side:

3x - 2 = 1

Add 2 to each side:

3x = 3

Divide each side by 3 :

<u>x = 1</u>

And then I guess <u>y= 0</u> .
</span>
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A school has 20
motikmotik

Answer:

One forth of 20 is 5, so there are 5 kindergarten and first grade classrooms.

5 x 2 is 10 so there are 10 second and third grade classrooms.

10 + 5 is 15.

20 - 15 is 5.

There are 5 forth and fifth grade classes.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
If x varies jointly as y and z,and x=8 when y=4 and a=9,find z when x=16 and y=6​
Luda [366]

Answer:

z=12

Step-by-step explanation:

It is given that x varies jointly as y and z, it means

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x(y,z)=kyz

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\frac{2}{9}=k

The value of k is 2/9.

x=\frac{2}{9}yz

We need to find the value of z when x=16 and y=6​.

Substitute x=16 and y=6 in the above equation.

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16=\frac{4}{3}z

Multiply both sides by 3.

48=4z

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Therefore, the value of z is 12.

7 0
4 years ago
What number has the value as 50 tens
soldier1979 [14.2K]
50 tens = 50 x 10

50 x 10 = 500

your answer is 500

hope this helps
7 0
3 years ago
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HELP FINLE QUSTION IT WOULD MEAN A LOT!!!!!!!!!!!!!!!!
Blizzard [7]

Answer:

simple,  20 cm, it literaly gave u the answer.

Step-by-step explanation:

can i have a brainliest pls?

4 0
3 years ago
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If 40%of an amount is $24, calculate 100%
Andreas93 [3]
Hey!!

here is your answer >>>

Let's take the total amount as 'X'

Then,

(40/100)X = 24

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x = (24*5)/2

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x = 60!.

100% is 60

Hope my answer helps!
8 0
3 years ago
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