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juin [17]
2 years ago
5

Write the following equation in standard form:22+52 +4 24 - 220

Mathematics
1 answer:
LekaFEV [45]2 years ago
6 0

Answer:2.78×10^2

Step-by-step explanation:

22+52+424-220

=278

In standard form

=2.78×10^2

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The number 72 is between what two perfect squares? Enter a numerical answer only.
jasenka [17]
Well a perfect square looks like this:

6 x 6
2 x 2

So the number 72 is between the PRODUCT of two perfect squares such as those.

One product has to be above 72, and the other below it.

So lets multiply.

8 x 8 = 64
9 x 9 = 81

Oh look at that, 72 is between 64 and 81.


7 0
3 years ago
Read 2 more answers
A political pollster wants to know what proportion of voters are planning to vote for the incumbent candidate in an upcoming ele
balandron [24]

Answer:

1.\ \ np\geq 10\\\\2.\ \ n\geq 10x

Step-by-step explanation:

-Let x be the sample size and n the population size

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n\geq 10x\\\\n=2000\\x=150\\10x=1500\\\therefore n\geq 10x

-The expectation np is greater than or equal to 10:

np\geq 10\\n=2000, p=0.6\\np=1200\\\\Hence, np\geq 10

5 0
3 years ago
Please help!!! Imagine is attached
Paul [167]

Answer:

They're both parabolas.

One is a parabola opening up (blue), the other one is opening down.

Step-by-step explanation:

In dutch, we call them what can be translated as  mountain-parabolas and valley-parabolas.

I also saw the terms "concave up" and "concave down".

8 0
3 years ago
Evaluate 42 – a² + ab for a = 6 and b = 5.
rodikova [14]
42-(6x6)+(6x5)
42-36+30
6+30
Answer: 36
3 0
2 years ago
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What is the solution to the proportion? 5/8 = m/40
Triss [41]
Your answer is 25. You do 40 times 5 divided by 8 or 8 times 5 is 40 and 5 times 5 is 25. Hope this helps
4 0
2 years ago
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