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4 years ago

Complete the following statement using always sometimes or never.A quadrilateral is a trapezoid

2 answers:

Alex4 years ago

6 0

Answer: A quadrilateral is a trapezoid that always has one pair of opposite sides that are parallel.

But all trapezoids are quadrilaterals.

Hope this helps! :)

dezoksy [38]4 years ago

5 0

Hello!

The answer to this question is "always" because a trapezoid is a polygon and it has always four sides and one pair of parallel sides which makes it a quadrilateral.

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In ΔSTU, the measure of ∠U=90°, the measure of ∠S=84°, and ST = 87 feet. Find the length of TU to the nearest tenth of a foot.

Amanda [17]

Answer:

TU=86.5 feet

Step-by-step explanation:

We are given with <U is 90 degrees. It means it is a right triangle.

So, we can use trigonometric ratio to solve.

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3 years ago

write out four less than four times a number is equal to 14 more than seven times a number. what is the number?

stepladder [879]

4x-4=14+7x

x=-6

Calculated using algebra

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3 years ago

The heights of flowering cherry trees are normally distributed with a mean of 11.5 feet, and a standard deviation of 1.7 ft. fin

Fittoniya [83]

Mean (μ) = 11.5 feet

Standard deviation (σ) = 1.7 feet

First we need to find the z-score for less than 13.5 feet.

The formula of z-score is : z = (X - μ)/σ

Here X= 13.5, so z = $\frac{(13.5-11.5)}{1.7}$

z = $\frac{2}{1.7}$ = 1.18

P(X < 13.5) = P(z< 1.18) =P(z< (1.1 + .08)) = 0.8810 (from z-score table)

P(X< 13.5) = 88.1% (for making percentage from decimal, we need to multiply by 100)

So, the probability that a randomly selected tree is less than 13.5 feet tall = 88.1%

4 0

3 years ago

What is the diameter of the circle?

LuckyWell [14K]

You need to include the image of the question it doesn’t make sense if

6 0

3 years ago

3a^2+4b^2 for a=2 and b=3

blagie [28]

First write the question:
3a^2 + 4b^2

Substitute:
3 x (2^2) + 4 x (3^2)

Simplify:
(3 x 4) + (4 x 9)

Simplify again:
12 + 36

Answer:
48

Hope it helped :)

4 0

3 years ago

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