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masha68 [24]
2 years ago
7

Solve for y a. 4x + 5y = 25

Mathematics
1 answer:
AfilCa [17]2 years ago
5 0

Answer:

y = -4/5x + 5

Step-by-step explanation:

In order to solve for y, we need to isolate the variable. First, let's subtract 4x on each side. After doing said step, we should now have this equation:

5y = -4x + 25

Next, we need to divide 5 on each side, giving us this new equation:

y = -4/5x + 5

There you go! Let me know if I did anything wrong ^-^

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Solve by substitution x-2y= -25 and 3x-y=0
andreev551 [17]

Answer:

x=5 and y=15

Step-by-step explanation:

x−2y=−25

x−2y+2y=−25+2y(Add 2y to both sides)

x=2y−25

Step: Substitute2y−25forxin3x−y=0:

3x−y=0

3(2y−25)−y=0

5y−75=0(Simplify both sides of the equation)

5y−75+75=0+75(Add 75 to both sides)

5y=75

5y

5

=

75

5

(Divide both sides by 5)

y=15

Step: Substitute 15fory in x=2y−25:

x=2y−25

x=(2)(15)−25

x=5(Simplify both sides of the equation)


5 0
3 years ago
The larger of the two positive numbers is 8 more than the smaller. The sum of their squares is 104. Find the two numbers.
poizon [28]

Hey there!

Let's set up a system of equations to find our answer. We will use x and y, with y being the larger 1.

y=x+8

x²+y²=104

We plug our value for y into the second equation and we get that y is equal to two. We can then plug this into the first equation and we get 10.

Our two numbers are two and ten.

I hope this helps!

Let's plug our y value into the second equation.

x²+x²+64=104

4 0
3 years ago
Is y=19x - 5 proportional
cricket20 [7]

Answer:

yes

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Suppose that the inside bottom of a box is painted with three colors: 1/3 of the bottom area is red, 1/6 is blue, and 1/2 is whi
7nadin3 [17]

Answer:

1/18 (5.5%)

Step-by-step explanation:

You have a 1/3 chance to get red the first time and a 1/6 to get blue the second. So to find the compound probability of this you multiply 1/3*1/6.

6 0
3 years ago
Simplify. What is your answer 8x + 9d + 3x -5d
BlackZzzverrR [31]

Answer:

11x + 4d

Step-by-step explanation:

8x + 9d + 3x -5d

To simplify this we have to group them by their like terms i.e.

= 8x + 3x + 9d - 5d

= 11x + 4d

Mark  brainliest

7 0
3 years ago
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