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4 years ago

Is my answer correct??

Mathematics

2 answers:

AfilCa [17]4 years ago

8 0

Answer: b ≈22.9

This problem is to be solved using the Pythagorean theorem. The equation for that is:

a ²+b ²=c ²

A and b are the legs (the shortest sides)
C is the hypotenuse (longest side)

Let’s write in what we know of the equation. C, the hypotenuse, is 25. That means that 10 and b are the legs. Let’s fill this into the equation and solve.

a ²+b ²=c ²

*fill in information*

10 ²+b ²=25 ²

*square numbers*

100+b ²=625

*subtract 100 on both sides*

b ²=525

*find square root*

b ≈22.9

This is your answer! Hope this helps comment below for more questions :)

Kryger [21]4 years ago

6 0

Answer:

That is incorrect. The correct answer is 22.9 cm

Step-by-step explanation:

As this is a right triangle with two side lengths given, we can use the Pythagorean theorem to find the final side. Recall that the Pythagorean theorem states: $a^2+b^2=c^2$

In the case of this problem: a is x, b is 10, and c is 25. Knowing this, we can plug these values into the formula and solve for x

$x^2+10^2=25^2\\\\x^2+100=625\\\\x^2=525\\\\x=\sqrt{525} \\\\x=22.912\\\\x=22.9$

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Previous concepts

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$P(X>3.5)=P(\frac{X-\mu}{\sigma}>\frac{3.5-\mu}{\sigma})=P(Z>\frac{3.5-5}{1.2})=P(z>-1.25)$

And we can find this probability using the complement rule:

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