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Semmy [17]
3 years ago
10

All help helps me so please give help

Mathematics
1 answer:
goblinko [34]3 years ago
4 0

(53 + 23) + 7 = 53 + (23 + 7) =53 + 30 = 83

Answer: A. 53 + (23 + 7)

It's Associative Laws (a + b) + c = a + (b + c).

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Multiply.
DanielleElmas [232]

Answer & Step-by-step explanation:

<em>(x² - 5x)(2x² + x - 3)</em>

Multiply each term from the first expression into the second expression.

<em>2x⁴ + x³ - 3x² - 10x³ - 5x² + 15x</em>

Combine like terms.

<em>2x⁴ - 9x³ - 8x² + 15x</em>

So, after you multiply the expressions, your answer will be 2x⁴-9x³-8x²+15x.

7 0
4 years ago
If i have 38 assignments and i do 15 of them what percentage do i have done?
netineya [11]

Answer:

39.473%

Step-by-step explanation:

It is actually fairly simple to get the answer to this. What you can do to find any percentage, is to take the amount done, or whatever it is in the scenario, and divide it by the total. It is like turning it into a fraction, which you can do as well. Turn this into a fraction, and then convert it. 15/38, 15 divided by 38 = 39.473.

Hope this helped ^-^

4 0
3 years ago
Read 2 more answers
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Leni [432]
The surface are of the shape is 251.5 units (sorry if that is wrong)

6 0
3 years ago
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2) Plot these points on a piece of graph paper. Draw a line to connect each of the pairs indicated. Then, determine which line i
valina [46]

2) longest line is (-1, -3) and (-1, 7)

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5 0
3 years ago
Solve this equation 2cos^2x-9cosx-5=0
Nesterboy [21]
2 (n π - i tanh^(-1)(sqrt(2/3))) should be the answer
6 0
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