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3 years ago

5

Which is a true statement about a 45-45-90 triangle

2 answers:

grin007 [14]3 years ago

8 0

Answer:

D

Step-by-step explanation:

myrzilka [38]3 years ago

6 0

Answer:

The hypotenuse is $\sqrt{2}$ times as long as either leg

Step-by-step explanation:

a true statement about a 45-45-90 triangle

The common ratio of 45-45-90 degree triangle is

x:x: $\sqrt{2}x$

Suppose the value of x is 1 then the ratio becomes

1:1: $\sqrt{2}$

1 is the side length of the triangle and $\sqrt{2}$ is the hypotenuse

The hypotenuse is $\sqrt{2}$ times as long as either leg

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Feliz [49]

2 - 0.24 = 1.76

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3 years ago

Read 2 more answers

What does the word “flip” tell you to do in “keep change flip” for dividing fractions a) change the place of the numbers numerat

mars1129 [50]

Answer:

b) change the places of the numbers in the numerator and the denominator for the second fraction

Step-by-step explanation:

In the phrase "keep change flip":

You "keep" the first fraction.

"Change" the division sign into a multiplication sign.

"Flip" (or switch) the places of the numerator and denominator in the second fraction.

Example:

$\frac{1}{2}$ ÷ $\frac{1}{3}$

$\frac{1}{2}*\frac{3}{1}=\frac{3}{2}=1.5$

Hope this helps.

7 0

3 years ago

Ethan installs tiles on the floor of a room with a length of 14 feet and a width of 12 feet. It takes 9 hours to install the til

Stels [109]

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6 0

3 years ago

Fast Food and Gas Stations Forty percent of all Americans who travel by car look for gas stations and food outlets that are clos

Andrei [34K]

Answer:

a

mean $\mu = 10$ variance $\sigma^2 = 6$

b

The binomial random variable x fall into this interval ranges from

- 5 to 5

c

$P(6 \le x \le 14) = 0.8969$

Step-by-step explanation:

From the question we are told that

The sample size is $n = 25$

The percentage that look for gas stations and food outlets that are close to or visible from the highway is $p = 0.40$

Generally the mean is mathematically represented as

$\mu = n * p$

=> $\mu = 0.40 * 25$

=> $\mu = 10$

The variance is mathematically represented as

$\sigma^2 = np(1- p )$

=> $\sigma^2 = 25 * 0.40(1- 0.40 )$

=> $\sigma^2 = 6$

The standard deviation is mathematically evaluated as

$\sigma = \sqrt{\sigma^2}$

$\sigma = \sqrt{6}$

$\sigma = 2.45$

The interval is evaluated as

$p\pm 2 \sigma$

=> $p - 2 \sigma\ \ \ , \ \ \ p + 2\sigma$

=> $0.40 - 2 *2.45\ \ \ , \ \ \ 0.40 + 2* 2.45$

=> $-4.5\ \ \ , \ \ \ 5.3$

The binomial random variable x fall into this interval ranges from

- 5 to 5

Generally

$P(6 \le x \le 14) = P(\frac{ x - \mu }{\sigma } \le \frac{14 - 10}{{2.45}} ]-P[ \frac{ x - \mu }{\sigma } \le \frac{6 - 10}{2.45 } ]$

$P(6 \le x \le 14) = P(Z \le 1.63 ]-P[ Z \le -1.63 ]$

$P(6 \le x \le 14) = [1- P(Z > 1.63 ]] -[1- P[ Z > -1.63 ]]$

From the z-table

$P(Z > 1.63 ) = 0.051551$

And

$P(Z >- 1.63 ) =0.94845$

=> $P(6 \le x \le 14) = [1-0.051551] -[1-0.94845]$

=> $P(6 \le x \le 14) = 0.8969$

7 0

2 years ago

I need someone to help me on this question plz.

Marianna [84]

The answer would be A because if you reflect triangle ABC over the x-axis then the y-axis it will be congruent to triangle XYZ

hope this helps!

3 0

3 years ago