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BaLLatris [955]
3 years ago
7

Heyo! I need help with the picture below! Thanks!

Mathematics
1 answer:
ad-work [718]3 years ago
8 0
3) 4r⁻³ · 2r² = 4·2 r⁽⁻³⁺²⁾ = 8 r⁻¹ = 8/r

4) 8k⁵

7) 6xy²
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The perimeter of a square is directly proportional to the length of one of its sides. The perimeter is 28 when the length of a s
telo118 [61]

Step-by-step explanation:

check the pic

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4 0
3 years ago
If the circumference of a circle measures 12π cm, what is the area of the circle in terms of π?
frez [133]
So the formula for the circumference of a circle is π x diameter
Since we know the the circumference already, we just divide that by π:

12π / π = 12

Now we halve the diameter to get the radius:
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The area of a circle is π x radius²
So the area is:

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5 0
3 years ago
Plz help i only need this question who ever get its right will get 77 point
Ivanshal [37]

Answer:

I don't know..............

8 0
3 years ago
Read 2 more answers
A+b=77,a-b=13 care sun nr
STALIN [3.7K]
It's a simultaneous equation:
Steps:
1.Number the equations..

a+b=77 -1
a-b=13 -2

2. Choose what variable you want to use. In this case I would use the "b". Since the signs in front of the "b's" are different, add the two equations together

a + b = 77
+ + +
a (-b) = 13

Which gives;
2a = 90

Then solve to find a:
2a=90
a= 90/2
a=45

3.Then plug the "a" value into any of the original equations to find the "b" value. I would use equation 1 since the all the variables are positive.

a + b = 77
(45) + b = 77
b=77-45
b=32

4.Solution

a=45
b=32
3 0
3 years ago
What is 3 ( x+2) using distributuve propert​
galben [10]

3(x+2)

Distribute and multiply
3 to x and 2 to get 3x+6
The answer is 3x+6
4 0
3 years ago
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