3 years ago

Solve the system by substitution

Mathematics

2 answers:

kherson [118]3 years ago

4 0

Answer:

y=1 x=9

Step-by-step explanation:

-4(9y) + y = -35

-36y+y=-35

-35y= -35

y=1

To check-

-4(9) + 1 = -35

-36 + 1 =-35

Natali [406]3 years ago

4 0

(9.1) is coordinates so y=1 & X=9

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A number, n, is multiplied by -3/8. The product is -0.5 What is the value of n?

andrew-mc [135]

Answer:

n=4/3

Step-by-step explanation:

n*(-3/8)=-0.5

n=0.5/3/8

n=1/2 / 3/8

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Check:

4/3*-3/8=-0.5

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CORRECT!

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3 years ago

What is 8 cm enlarged by a scale factor of 6.5

Andrei [34K]

Answer:

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Step-by-step explanation:

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7 0

3 years ago

The sum of two numbers is -23, and the difference of the larger and the

geniusboy [140]

The two numbers are 29 and -52

Further explanation:

Let x be the larger number

and

y be the smaller number

then according to given statements

$x+y = -23\\x-y=81$

Adding both equations

$x+y+x-y=-23+81\\2x=58\\\frac{2x}{2} =\frac{58}{2}$

$x=29$

Putting x = 29 in first equation

$29+y=-23\\y=-23-29\\y=-52$

<u>Proof:</u>

Putting the values of x and y in first equation

$29-52=-23\\-23=-23$

So, The two numbers are 29 and -52

Keywords: Linear equations in two variables, Elimination method

Learn more about linear equations at:

#LearnwithBrainly

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3 years ago