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babymother [125]
3 years ago
13

Aiden invests money in an account paying simple interest. He invests $40 and no money is added or removed from the investment. A

fter one year, he has $42.80. What is the simple percent interest per year?
Mathematics
2 answers:
alexgriva [62]3 years ago
8 0

Answer:

7%

This answer is better when your answering as a percentage.

Tpy6a [65]3 years ago
5 0

Answer:

82.8

Step-by-step explanation:

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If f(x) = 2x² - 6x + 8, find f(a - 2).
yan [13]

Answer: f(a-2) = 2a² - 14a + 28

Step-by-step explanation:

f(x) = 2x² - 6x + 8

you can take a-2 and substitute it for each x, which would look like this:

f(a-2) = 2(a-2)² - 6(a-2) + 8

then distribute those in ( )

f(a-2) = 2a² - 8a + 8 - 6a + 12 + 8

combine like terms

f(a-2) = 2a² - 14a + 28

7 0
2 years ago
Liliana wants to determine the height of an enlarged photo that she plans to frame. The original photo was 11 inches wide by 14
vova2212 [387]

For this case, the first thing we must do is find the scale factor.

For this, we use one of the dimensions. We will use the width of the photo.

We have then:

k = \frac {132} {11}\\k = 12

Then, we look for the value of the height of the new photo. To do this, we multiply the scale factor by the original dimension.

We have then:

14k = 14 (12) = 168

Answer:

the new height will be:

d.168 inches


6 0
3 years ago
Read 2 more answers
Help me with this immediately​
BARSIC [14]

Answer:

complementary angles, x=19

Step-by-step explanation:

since the two parts of the angle add up to 90, they are complementary angles.

you can find x by adding them and setting it equal to 90:

3x-2+2x-3 = 90

5x-5 = 90

5x = 95

x = 19

5 0
3 years ago
-30<x/-4 answer must be simplified ​
Shtirlitz [24]

Answer:

x<120

Step-by-step explanation:

-30<x/-4

In order to simplify this, we must isolate the x value by multiplying both sides by -4

Since we are dealing with inequalities and we are multiplying by a negative number, we have to switch the sign (<,>)

-30(-4)>x

x<120

6 0
2 years ago
Factor each expression 5x + 15
lana66690 [7]
Take out the gcf (5).

5(x+3)

The inner binomial cannot be factored.

Final answer: 5(x+3)
6 0
3 years ago
Read 2 more answers
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