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3 years ago

Which statement is correct for 45-45-90 triangles?

Mathematics

1 answer:

Luda [366]3 years ago

6 0

Answer:

45+45+90

This triangle would be a isosceles triangle.

Step-by-step explanation:

All triangles have three angles. These angles always add up to 180 degree. So 45+45 would be 90, 90+90 = 180.

This would be a scalene triangle if all the angles had different numbers to equal 180.

It is an isosceles if the triangle has two angles that are the same and one different.

It is an equilateral if all the angles are the same to equal 180.

Two of the angles are the same (45, 45) so this would be defined as an isosceles triangle.

Hope this helps you! (:

-Hamilton1757

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Michelin Tire Company wishes to set a minimum mileage guarantee on its new MX100 tire. Tests reveal the mean mileage is 67,900 w

Keith_Richards [23]

Answer:

The minimum guaranteed mileage is $x = 71489.55$

Step-by-step explanation:

From the question we are told that

The mean is $\mu = 67900$

The standard deviation is $\sigma = 2050$

Generally for the probability to be 4% the minimum guaranteed mileage is evaluated as

$P( X \ge x ) =1- P( \frac{X - \mu }{\sigma } < \frac{ x - 67900 }{ 2050} ) = 0.04$

$\frac{X -\mu}{\sigma } = Z (The \ standardized \ value\ of \ X )$

$P( X \ge x ) =1- P( Z$

=> $P( X \ge x ) = P( Z$

=> $z = \frac{ x - 67900 }{ 2050}$

From the z table, the critical value corresponding to 0.96 to the left of the curve is

$z = 1.751$

$1.751 = \frac{ x - 67900 }{ 2050}$

=> $x = 71489.55$

4 0

3 years ago

What is the area of a circle with a radius of 21 feet?

lidiya [134]

Answer:

Area is about 1520.53

Step-by-step explanation:

$A=\pi r^{2}$

A = $\pi 21^{2}$

A ≈ 1520.53

6 0

3 years ago

5x-6=24 What’s the answer

Ad libitum [116K]

Answer:

x = 6

Step-by-step explanation:

5x = 24 + 6

5x = 30

5x/5 = 30/5

x = 6

6 0

3 years ago

Read 2 more answers

Angle A is 5x-15. Angle B is 2x+21. Solve for x then find the measure for Angle B

strojnjashka [21]

Answer:

×3-13 ×4-14 ×5-15 ×6-16

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3 years ago

Andre received and spent money in the following ways last month. For each example, write a positive or negative number to repres

lara [203]

Answer:

+25;+18;-10

Step-by-step explanation:

Ok so let's break down the scenario step by step:

His uncle gave him $25 so that means it's positive so +25
Now he earned $18 so that means it is also positive so +18
And now he spent $10 which means it is negative so - 10

(And of you want to find out the amount left with him,

(25+18)-10

=43-10

=$33)

Hope this helps :)

3 0

3 years ago