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likoan [24]
3 years ago
6

7th grade math help me pleasee

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
3 0

Answer:

Step-by-step explanation:

a. (-6/2)*(1/3)*(36/2)=-18; b. (125/100)*(-2/2)

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Which of the following are solutions to the equation below?
NemiM [27]

Answer:

C and D

Step-by-step explanation:

Given

(3x - 5)² = 19 ( take the square root of both sides )

3x - 5 = ± \sqrt{19} ( add 5 to both sides )

3x = ± \sqrt{19} + 5 ( divide both sides by 3 )

x = \frac{+/-\sqrt{19}+5 }{3}

x = \frac{-\sqrt{19}+5 }{3} → C

x = \frac{\sqrt{19}+5 }{3} → D

4 0
4 years ago
Read 2 more answers
Please help! :)
Aleks [24]

Answer:

<h3><u>Part A.</u> 5n</h3>

<h3><u>Part B.</u> 5n (2n –3) ( n + 2x)</h3>

Step-by-step explanation:

<u>A. Ans ; </u>

10n³ – 15 n² + 20 xn² – 30 xn

Factors ; 10 —> 10 , 5 , 2 , 1

Factors ; 5 —> 5 , 1

Factors ; 20 —> 20 , 10 , 5 , 4 , 2 , 1

Factors ; 30 —> 30 , 15 , 10 , 6 , 5 , 3 , 2, 1

The greatest common factor of numbers is ; 5

n³—> n , n , n

n² —> n , n

xn² —> x , n , n

xn —> x , n

The greatest common factor of the variables is ; n

<h3>So ; Greatest common factor : 5n</h3>

<u>B . Ans ;</u>

10 {n}^{3}  - 15 {n}^{2}  + 20x {n}^{2}  - 30xn \\ 5n(2 {n}^{2}  - 3n + 4xn - 6x) \\ 5n(2n - 3)(n + 2x)

I hope I helped you^_^

8 0
3 years ago
How do you solve this problem (3x-2)^3
Vikentia [17]
216 I think because 3 times negative 2 is -6 the -6^3=6*6*6=216
3 0
3 years ago
HURRY
rosijanka [135]

Answer:

28 miles

Step-by-step explanation:

The shortest distance Jill can travel is 28 miles. She goes to the post office, back to her house, up to the city hall, to the grocery store, back to the city hall and eventually back to her house.

8 0
3 years ago
Read 2 more answers
PLS ANSWER THIS QUESTION
Brilliant_brown [7]
4x3=12/2=6
Your answer is 6.
3 0
3 years ago
Read 2 more answers
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