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2 years ago

It’s two parts help me

Mathematics

2 answers:

ehidna [41]2 years ago

8 0

Answer:

40 degree acute

Step-by-step explanation:

Andre45 [30]2 years ago

3 0

<h3>Answer: 40 degrees. The angle is acute</h3>

=============================================

Explanation:

Angle JEK is composed of two rays EJ and EK

Ray EJ lands on 140 degrees while EK is on 180 degrees

Subtract the two values: 180-140 = 40

So angle JEK is 40 degrees. Since this is less than 90, the angle is acute.

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7. Look at the picture.

Shtirlitz [24]

Answer:

Step-by-step explanation:

6 0

2 years ago

bright pools is building a rectangular pool at a new house. The perimeter of the pool has to be 94 feet and the length has to be

bekas [8.4K]

Answer:

$\displaystyle 15\:feet\:wide \\ 32\:feet\:long$

Step-by-step explanation:

{2 + 2w = l

{94 = 2w + 2l

94 = 2w + 2[2 + 2w]

94 = 2w + 4 + 4w

94 = 4 + 6w

- 4 - 4

_________

$\displaystyle \frac{90}{6} = \frac{6w}{6}$

$\displaystyle 15 = w$ [Plug this back into both equations above to get the length of 32 feet]; $\displaystyle 32 = l$

I am joyous to assist you anytime.

4 0

3 years ago

Add 4x²y,-2xy²,-5xy²,3x²y plz explain

Vinil7 [7]

4x^2 - 2xy^2
5xy^2 +
3x^2y
_____________
12x^5y^4-2xy^2

This is so because 4+5+3 is 12, then using laws of indices to add your x and y you get x^5 and y^4

To simplify your answer to the lowest you have it in the form of
3x^2y^2(4x^2y - 2xy^2)

If you multiply this as well you get the same answer I got with the addition

3 0

3 years ago

A ball is hit into the air with an initial velocity of 100 ft/s. Its height, h(t), after t seconds is given by the function h(t)

Lana71 [14]

at maximum. dt/dh=0

if you differentiate you will get

-32t=-100

t=3.125

8 0

3 years ago

Fast-food restaurants spend quite a bit of time studying the amount of time cars spend in their drive-throughs. Certainly, the f

melisa1 [442]

Answer:

For the 99th percentile, we have X = 206 seconds.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 138.5, \sigma = 29$