4 years ago

Simplify an expression

Mathematics

1 answer:

fiasKO [112]4 years ago

5 0

Is there a question that goes with this command?

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5x - 7(2- 4x) = <br> 8 - 3(6 - 6x) =<br> 9a - 4(2a + 5) =

kati45 [8]

Answer:

the answer to 5x-7(2-4x)= =33x−14

the answer to 8 - 3(6 - 6x) ==18x−10

the answer to 9a - 4(2a + 5) ==a−20

Step-by-step explanation:

8 0

4 years ago

It is believed that 43% of the US population can play the piano, 28% can play the guitar, 15% can play the harmonica, 12% can pl

melomori [17]

Answer:

The smallest sample size to satisfy the conditions is n=500.

Step-by-step explanation:

The condition for performing the inference related to the sample size is that, for all the categories, the expected success and failures in the sample are at least 10:

$np\geq10\\\\n(1-p)\geq10$

The largest sample size required will be for the minimum p or (1-p).

This happens to be the proportion that can play other instruments: 2%.

Then, we can calculate the minimum sample size as:

$np\geq10\\\\n(0.02)\geq10\\\\n\geq(10/0.02)\\\\n\geq500$

6 0

3 years ago

How many terms are in the expansion (3x - 7y)4

jarptica [38.1K]

Answer:

12x-28y

Step-by-step explanation:

4 0

4 years ago

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Two lines that have the same slope and different y intercepts do not intersect at any points.

alexdok [17]

Answer:

True

Step-by-step explanation:

4 0

3 years ago

Which equation shows the inverse property of multiplication? 4 + (-4) = 0 -8 + (-3) = -3 + (-8) mc010-1.jpg mc010-2.jpg

Igoryamba

Answer: 2 x (1/2) = 1
The two numbers are inverses of each other multiplicative. Or, you could say that they are both inverses of each other. Choices A and B both show additive inverses so those can't be it. And the last shows identity.

Hope this helps :)<span />

6 0

3 years ago

Read 2 more answers