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Semenov [28]
2 years ago
10

Which of the following equations has a solution of x = -5?

Mathematics
2 answers:
polet [3.4K]2 years ago
5 0

Answer:

B

Step-by-step explanation:

16(-5) - 7 = 11(-5) - 32

-80 - 7 = -55 - 32

-87 = -87

-4(-5) - 10 = 2(-5) + 20

-30 ≠ 10

dusya [7]2 years ago
5 0

Answer:

c. Both A and B

Step-by-step explanation:

Let's solve the equations to find out.

Equation A

16x - 7 = 11x - 32

5x - 7 = -32

5x = -25

x = -5

So, Equation A has a solution of x = -5.

Equation B

-4x - 10 = 2x + 20

-6x - 10 = 20

-6x = 30

x = -5

And so does Equation B.

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Please try this, it's a basic proof that I don't know how to do. Thanks!
avanturin [10]
A cube, is made off 6 squarial faces, so all faces on that cube, are squares, the front, back, left, right, top and bottom.

a square has all equal sides, and also all right angles, so all angles in a square are 90°.  Let's say the sides are "x" long.

now, if we run a plane on that cube diagonally, check the picture below, the diagonal side at the bottom, by usin the 45-45-90 rule as you see it there, will be x√2.

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7 0
3 years ago
Monica has been saving her spare change. So far she has saved 40 coins for a total of $6.25. Some of the coins are quarters (25
neonofarm [45]

Answer:

10 quarters

40 dimes

Step-by-step explanation:

q + d = 40

25q + 10d = 625

25 > 10

q < d

25(10) = 250

10(40) = 400

$2.50 + $4.00 = $6.00

7 0
3 years ago
Solve for x: -3 + x = -22
Tanya [424]

Answer:

x= -19

Step-by-step explanation:

-3 + x = -22

Add 3 to each side

-3+3 +x = -22 +3

x = -19

3 0
3 years ago
Evaluate the exponential function f(x)=(1/2)^x. Which value completes this table?
zheka24 [161]
0.5^-1=2
the answer is 2
5 0
3 years ago
Read 2 more answers
HELP PLEASE 20points!!!
labwork [276]

Answer:

61%

Step-by-step explanation:

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This is 61% approx.

7 0
2 years ago
Read 2 more answers
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