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3 years ago

I WILL MARK AS BRAINLIEST! Solve for Y

Mathematics

2 answers:

zzz [600]3 years ago

7 0

Answer:

See below.

Step-by-step explanation:

Substitute the value for the variable and solve.

a.)

⇒ y = -5(3) + 17

⇒ y = -15 + 17

⇒ y = 2

b.)

⇒ y = 3(3) - 22

⇒ y = 9 - 22

⇒ y = -13

c.)

⇒ y = 2(3) - 25

⇒ y = 6 - 25

⇒ y = -19

d.)

⇒ y = 6(3) - 39

⇒ y = 18 - 39

⇒ y = -21

Marina86 [1]3 years ago

7 0

Answer:

X changes to Multiply symbol

Step-by-step explanation:

-5 X 3 + 17

-5 X 3 = -15

-15 + 17 = 2

3 X 3 - 22

3 X 3 = 9

9 - 22 = 13

2 X 3 -25

2 X 3 = 6

6 - 25 = 19

6 X 3 - 39

6 X 3 = 18

18 - 39 = -21

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3 years ago

Marcos had 15 coins in nickels and quarters. He had 3 more quarters than nickels. He wrote a system of equations to represent th

hodyreva [135]

Answer:

There are 6 coins in nickels and 9 coins in quarters.

Step-by-step explanation:

Now, to find the solution.

According to question:

The number of nickels = $x$ .

The number of quarters = $y.$

So, the total number of coins:

$x+y=15.$

He had 3 more quarters than nickels.

Thus,

$y=x+3$ .....(1)

Now, to get the solution:

$x+y=15$

Substituting the equation (1):

$x+(x+3)=15$

$x+x+3=15$

$2x+3=15$

Subtracting both sides by 3 we get:

$2x=12$

Dividing both sides by 2 we get:

$x=6.$

The number of nickels = 6.

Now, substituting the value of $x$ in equation (1):

$y=x+3\\\\y=6+3\\\\y=9.$

The number of quarters = 9.

Thus, there are 6 coins in nickels and 9 coins in quarters.

6 0

3 years ago

What steps do you need to take to solve the equation 1/2x +6=18

andriy [413]

1.) move the constant over (1/2x=18-6) || 2.) combine like terms (1/2x=12) || 3.) divide both sides by 1/2 to get x alone (x=6)

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4 years ago

What is the value of x in the equation 3x - y = 18, when y= 27? O 5 O 7 O45 O 63

forsale [732]

Answer:

Step-by-step explanation:3x-y=18

y=27

Therefore 3x-(27)=18

3x=18+27..Nb when the 27 is now being added instead of subtracted.

3x=45

3x/3=45/3 Nb the 3 is now being divided instead of being multiplied.

Therefore X=15

8 0

3 years ago

Please take your time but I really need anyone's help!!!!

stiv31 [10]

Answer:

C) 5 3√2

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers