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Likurg_2 [28]
3 years ago
5

Simplify each expression justify each step 3x•(7•x)

Mathematics
1 answer:
jarptica [38.1K]3 years ago
8 0
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40x^-4 y^-6/(over)10x^-5 y^5
lisov135 [29]

Answer:

4x/y¹¹

Step-by-step explanation:

1) take out constants

40/10 * x⁻⁴y⁻⁶/x⁻⁵y⁵

2) simplify 40/10 to 4

4 * x⁻⁴y⁻⁶/x⁻⁵y⁵

3) Use Quotient Rule: xᵃ/xᵇ=xᵃ⁻ᵇ

4x⁻⁴⁺⁵y⁻⁶⁻⁵

4) Simplify -4 + 5 to 1

4x¹y⁻⁶⁻⁵

5) simplify -6-5 to -11

4x¹y⁻¹¹

6) use rule of one: ₓ¹=ₓ

4xy⁻¹¹

7) use negative power rule: x⁻ᵃ=1/xᵃ

4x * 1/y¹¹

8) simplify

4x/y¹¹

7 0
2 years ago
Help meeee if you want to please thank you have a good day!
Minchanka [31]
The answer is 2.7

I’m not an expert at this but i did some research so I hope I can help

It’s 2.7 because the formula for calculating density is to divide the mass by the volume and in you do that for each of them you get 2.7 every time
7 0
3 years ago
Read 2 more answers
Can anyone help me figure this out? It’s not 75 x 0.20.. thank you :) I’ll give Brainly!!
cluponka [151]

Answer:

60

Step-by-step explanation:

Dividends are paid quarterly and it wants the annual amount, so you have to mulitply what you originally got by 4

or

75*.2*4=60

8 0
2 years ago
Read 2 more answers
Solve the system by substitution.
tino4ka555 [31]
As we know y=3/4x-3
Let's put it in the second equation
3/4x-3=1/4x+1
3/4 x -1/4 x = 1+3
2/4 x = 4
X= 4*4/2
x=8
Put x= 8 in first equation
y= 3/4 *8 -3
y=6-3
y=3
Check the answer
3=3/4 *8 -3
3=6-3
3=3
Correct
So(y, x) = (3,8)
Because x=8 and y=3
3 0
3 years ago
List the first 11 perfect squares
vlabodo [156]
1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121
6 0
3 years ago
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