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3 years ago

15

Which inequality represents all the solutions of 10(3x + 2) > 7(2x − 4)?

2 answers:

elena-s [515]3 years ago

7 0

Answer:

x > -3

Step-by-step explanation: First you have to distribute the 10 to 3x +2 and 7 to 2x -4 . 10 times 3x + 2 is 30x + 20. 7 times 2x -4 is 14 x -28 . Subtract 20 from both sides, which is 30x = 14x-48 , because -28 minus 20 is -48. Subtract 14 x from both sides which is gonna be 16x >-48 , divide both sides by 16 which is x > -3.

Mrrafil [7]3 years ago

4 0

Answer:

x>-3

Step-by-step explanation:

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Marizza181 [45]

$\bf \cfrac{x(x+1)^2(x-5)}{x(x+2)(x-5)^3}\implies \cfrac{(x+1)^2}{(x+2)(x-5)^2}$

all we can really cancel is one of the (x-5) and the "x", is all.

5 0

3 years ago

What is the prime factorization for 180?

Svetlanka [38]

180
2 * 90
2 * 3 * 30
2 * 3 * 2 * 15
2 * 3 * 2 * 3 * 5
2^2 * 3^2 * 5 <===

8 0

3 years ago

The equation P = 21 + 2w can be used to find the perimeter of a rectangle. A 1 point rectangular shaped playground is enclosed b

nalin [4]

Answer:

130 m

Step-by-step explanation:

<u>Given:</u>

P = 2l + 2w
P = 500 m

<u>Length is:</u>

l = 120 m

<u>Substitute values and solve for w:</u>

500 = 2*120 + 2w
2w = 500 - 240
2w = 260
w = 260/2
w = 130 m

5 0

3 years ago

Please help 8th grade math

wariber [46]

Answer:

$n \geq -\frac{-29}{28}$

Step-by-step explanation:

$-3(1 - 7n) \geq -32 - 8n\\-3 + 21n \geq -32 -8n\\$

+8n +8n

$-3 + 28n \geq -32\\+3 +3\\28n \geq -29\\/28 /28\\n \geq \frac{-29}{28}$

6 0

3 years ago

75% of what number is 42?

Anna35 [415]

75 42
----- -----
100 x

75 x= 4200
--- ------
75 75

x = 56

6 0

3 years ago

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