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3 years ago

A rectangle has an area represented by x^2-4x-12 feet. If the length is x+2 feet, what is the width?

Mathematics

1 answer:

pickupchik [31]3 years ago

4 0

The width is (x-6)............

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the moon is about 240,000 miles from earth what is this distance written as a hole number multplied by the power of ten

guajiro [1.7K]

2.4 to the 5th power of 10

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3 years ago

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Anna71 [15]

Answer:

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3 years ago

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A recent report in a women magazine stated that the average age for women to marry in the United States is now 25 years of age,

MrRissso [65]

Answer: 0.0136

Step-by-step explanation:

Given : Mean : $\mu=\ 25$

Standard deviation : $\sigma= 3.2$

Sample size : $n=50$

The formula to calculate the z-score :-

$z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

For x = 24

$z=\dfrac{24-25}{\dfrac{3.2}{\sqrt{50}}}=-2.20970869121\aprox-2.21$

The P-value = $P(z\leq24)=0.0135526\approx0.0136$

Hence, the probability that the sample mean age for 50 randomly selected women to marry is at most 24 years = 0.0136

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4 years ago

If triangle STU is congruent to triangle VWX, which statement is not true?

iren [92.7K]

If triangles are congruent then, their corresponding sides and angles should have the same measurement. From the given, STU is congruent to VWX, angle S, T, U should be congruent to angles V, W, and X, respectively. From the choices, the answer should be letter D. because U and V do not appear in the same order from both names.

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3 years ago

One triangle has an angle of 81 degrees and the corresponding angle of the other triangle is 2x - 5 degrees, find the value of x

Delicious77 [7]

Answer:

$x=43$

Step-by-step explanation:

Corresponding angles are equal. It is implied that the two angles referred to in the triangles are equal, otherwise they should not be labelled as corresponding.

Therefore, we can set both equations equal to each other:

$2x-5=81^{\circ}$

Add 5 to both sides:

$2x=86$

Divide both sides by 2:

$x=\frac{86}{2}=\boxed{43}$

8 0

3 years ago