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GalinKa [24]
3 years ago
6

What is this? 2x-y=2

Mathematics
1 answer:
Nina [5.8K]3 years ago
7 0
2x - y = 2
this is an equation with 2 variables x and y 
what do you want to do with it?
You might be interested in
If EH = 76, calculate DI.
Montano1993 [528]

Answer:

DI = 38

Step-by-step explanation:

Δ EHC and Δ DIC are similar and ratios of corresponding sides are equal, that is

\frac{DI}{EH} = \frac{DC}{EC} , substitute values

\frac{DI}{76} = \frac{1}{2}  ( cross- multiply )

2DI = 76 ( divide both sides by 2 )

DI = 38

4 0
3 years ago
After a 5% pay raise , Hermione is earning $21,000 per year. What was she earning before the pay raise?
Finger [1]

Answer:

\$20,000

Step-by-step explanation:

Let

x -----> Hermione was earning before the pay raise

we know that

100\%+5\%=105\%=105/100=1.05

so

The linear equation that represent this problem is

1.05x=21,000

Solve for x

Divide by 1.05 both sides

x=21,000/1.05

x=\$20,000

7 0
3 years ago
Can someone please clearly and correctly work out Q19? Would appreciate it a lot! :)
DiKsa [7]
x^{2} +10x+30
I always start by moving the last term to the other side
x^{2} +10x=-30
To complete the square you take term 'b' , divide it by 2 then square it
( \frac{10}{2} )^2 = 25
We have to add 25 to what we have and what you do to one side you have to do to the other
x^{2} +10x+25=-30+25
x^{2} +10x+25=-5
Now we factor what is on the left side of the equation
(x+5)^2=-5
The last step is to move our right side of the equation back over 
(x+5)^2+5 - which is your answer :)))


6 0
3 years ago
Please helpppppppppppppppppppppppp
salantis [7]

Answer:

252

Step-by-step explanation:

Split up the shape

First part:

12*12=144

Second part:

((12+(12-6))/2)*24-12

((12+6)/2)*12

18/2*12

9*12 =  108

Total:

108+144 = 252

<u>Plz mark brainliest if this was helpful</u>

8 0
3 years ago
Jeremy is making a trail mix containing raisins and peanuts. Raisins cost $1.50 per pound. Peanuts cost $2.50 per pound. Jeremy
g100num [7]
1.5r + 2.5(5 - r) = 10.50
5 0
3 years ago
Read 2 more answers
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