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Lorico [155]
3 years ago
13

The sum of two numbers is 17

Mathematics
1 answer:
swat323 years ago
6 0

Answer:

10 and 7

Step-by-step explanation:

Let the numbers be A and B

The sum of the two numbers is 17.

That’s

A + B = 17

The difference of the numbers is 3

A - B = 3

We now have two equations

1. A + B = 17

2 . A - B = 3

Subtract equation two from equation one.

B - - B = B + B = 2B

2B = 14

Divide both sides by 2

2B/2 = 14/2

B = 7

Now substitute 7 for B into either of the equations to get A.

Using equation 1 we have

A + B = 17

A + 7 = 17

Subtract 7 from both sides

A - 7 = 17 - 7

A = 10

The numbers are 10 and 7

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beks73 [17]

Delete as this is the wrong answer. Made a typo in the answer.

Answer:

x = \frac{-212}{3}

y = 24

Step-by-step explanation:

-3x - 8y = 20  .... (1)

-5x + y = 19   .... (2)

What we can do is take the (2) equation

-5x + y = 19

and solve for y by adding 5x to both sides

y = 24

now that we have y we substitute it in for y in equation (1)

-3x - 8(24) = 20

-3x - 192 = 20

we want to solve for x so we need to get its self.

add 192 to both sides

-3x = 212

now we divide both sides by -3. It's going to be a fraction.

x = \frac{-212}{3}

7 0
3 years ago
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slega [8]
X=3
Y=-2
Z=1

Hope this helps.

3 0
3 years ago
See question above ^^​
denpristay [2]
I think the answer is (4) because if you rotate AEC to the left (counterclockwise) and follow by the scale factor of 2 so, CE = 4x2 = 8 and CA = 3x2 = 6. Hope this help :))
7 0
3 years ago
Each of the walls in Harvey’s shed are square and have an area of 84 square feet. What is the approximate height, to the nearest
Mariulka [41]

Answer:

B. 9 feet

Step-by-step explanation:

area = side^2

side^2 = 84

side = sqrt(84)

side = 9.2 ft

Each side of a wall measures 9.2 ft.

5 0
3 years ago
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Solve for x.
Trava [24]

Answer:

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Step-by-step explanation:

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