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zalisa [80]
2 years ago
9

A²-b²-c²-8b²+a²+c² what is the answer

Mathematics
1 answer:
wlad13 [49]2 years ago
4 0
Well this only simplifies to a smaller equation
so the answer would be...

2a²-9b²
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Assume that military aircraft use ejection seats designed for men weighing between 141.8 lb and 218 lb. If​ women's weights are
Mariulka [41]

Answer:

P(141.8

And we can find this probability with this difference and using the normal standard table:

P(-0.639

Then the answer would be approximately 55.3% of women between the specifications. And that represent more than the half of women

Step-by-step explanation:

Let X the random variable that represent the weights of a population, and for this case we know the distribution for X is given by:

X \sim N(173.6,49.8)  

Where \mu=173.6 and \sigma=49.8

We are interested on this probability

P(141.8

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(141.8

And we can find this probability with this difference and using the normal standard table:

P(-0.639

Then the answer would be approximately 55.3% of women between the specifications. And that represent more than the half of women

8 0
3 years ago
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natka813 [3]

Answer:

thxfor free points

Step-by-step explanation:

8 0
2 years ago
Do these side lengths make a right triangle? 2.1, 7.2, 7.5
mariarad [96]

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Step-by-step explanation:

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3 years ago
Express 7p+12=3p+11 as an equivalent equation by combining constants
meriva
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8 0
3 years ago
Read 2 more answers
Write the expression (4x-2)×6(2x+7) in the standard form of a quadratic expression ax^{2}+bx+c. What are the values of the coeff
lesya [120]
<span>(4x-2)×6(2x+7) =
</span>
(4x-2) <span>× 12x + 42 =

48x^2 -24x + 168x -84 = 0
</span>
<span>48x^2 +144x -84 = 0

a = 48  b = 144 and c = -84
and the solution is
x1=.5 and x2=-3.5

</span>
7 0
3 years ago
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