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blagie [28]
3 years ago
9

What precent of 40 is 28

Mathematics
1 answer:
Jlenok [28]3 years ago
6 0

Answer:

70%?

Step-by-step explanation:

I think this because half of 40 is 20 so that's 50 percent then 4 is 10 percent times that by 2 its 70 percent I think bit dont trust me I'm just doing this in my head..

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Chegg.com has the answer to this question.
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3 years ago
Which statement about the potential solutions to 2log x − log3 = log3 is true? Both are extraneous solutions.
JulijaS [17]

Answer:

c on edge

Step-by-step explanation:

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8 0
4 years ago
Read 2 more answers
Write an exponential function whose graph passes through the points (0,-2) and (2,-50)
solniwko [45]

Answer:

first sub in (0,-2) to get

-2 = ab^0, but b^0 = 1

so a=-2

so far we have

y = -2b^x

now use the other point (2,-50)

-50 = -2(b^2)

b^2 = 25

b= ±5

however in exponentional equations the base is usually positve, so now you have

y = -2(5^x)

sub in x=-2 and you got it.

Step-by-step explanation:

hope it helps..

8 0
3 years ago
Find the area.<br> A. 19 ft²<br> B. 30 ft²<br> C. 31 ft²<br> D. 84 ft²
JulijaS [17]

Answer: D. 84 ft^2

Step-by-step explanation: The area of a trapezoid is (a+b)/2 x h. A and B are the bases, and h is the height. Plug in the numbers.

(8+16)/2 x 7 = 84

Your answer would be 84 ft^2. D.

8 0
4 years ago
12x−5y=−20 y=x+4 x=x=x, equals y=y=y, equals
aksik [14]

Answer:

The solution is (0, 4)

Step-by-step explanation:

Please pay attention to the first two equations and drop the last two:

12x−5y=−20 y=x+4 x=x=x, equals y=y=y   should ideally be:

12x−5y=−20

y=x+4

Let's find x.  Substitute x + 4 for y in the first equation, obtaining:

12x - 5(x + 4) = -20

Carrying out the indicated multiplication, we get:

12x - 5x - 20 = -20, or 7x = 0

If x = 0 then y must be 0 + 4, or 4.  

The solution is (0, 4)

8 0
3 years ago
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