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Artemon [7]
3 years ago
14

Anyone know? Will mark brainliest if correct!

Mathematics
2 answers:
bekas [8.4K]3 years ago
7 0

My answer was deleted for some reason, but you answer is f(x) so "c".




kati45 [8]3 years ago
4 0
The answer is c f(x)
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A radioactive substance decays according to the equation y=30( .88 )^x, where y is measured in grams of the radioactive substanc
Gelneren [198K]
The answer is: 4 idk.
7 0
3 years ago
The area of the isosceles triangle is 80 square centimeters. Use the equation 1/2(8h) =80 to find the height of the triangle.
Dmitry [639]

Answer:

20cm

Step-by-step explanation:

Given data

Area=  80cm^2

we know that the expression for the area of a triangle is

A= 1/2B*H

from the given expression 1/2(8h) =80 the base is 8cm

let us substitute to find the height h

1/2(8h) =80

4h=80

h= 80/4

h= 20cm

Hence the heigth h is 20cm

6 0
2 years ago
The table shows the costs of three types of meat John bought at a supermarket. complete the table.
Marina CMI [18]
To find the cost per pound you simply divide the amount paid by the amount purchased

For Beef it would be:
$7.20 ÷ 2.0 = $3.60


For Pork it would be:
$8.10 ÷ 2.5 = $3.40


For Chicken it would be:
$9.80 ÷ 3.5 = $2.8
7 0
3 years ago
Solve for x. 5(x 1) = 4(x 8)
tresset_1 [31]
Asssuming blanks are plus

5(x+1)=4(x+8)

distribute
a(b+c)=ab+ac

5(x+1)=5x+5

4(x+8)=4x+32

5x+5=4x+32
minus 4x from both sides
x+5=32
minus 5 from both sides
x=27
5 0
3 years ago
21 is what percent of 40?
elena-s [515]

1. We assume, that the number 40 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 100% equals 40, so we can write it down as 100%=40.

4. We know, that x% equals 21 of the output value, so we can write it down as x%=21.

5. Now we have two simple equations:

1) 100%=40

2) x%=21

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

100%/x%=40/21

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.


7. Solution for 21 is what percent of 40


100%/x%=40/21

(100/x)*x=(40/21)*x       - we multiply both sides of the equation by x

100=1.90476190476*x       - we divide both sides of the equation by (1.90476190476) to get x

100/1.90476190476=x

52.5=x

x=52.5


now we have:

21 is 52.5% of 40

6 0
3 years ago
Read 2 more answers
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