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3 years ago

HElp me you know who you are

Mathematics

1 answer:

shepuryov [24]3 years ago

7 0

Answer:

Step-by-step explanation:

Because the vertice K is only in the triangle KLM hence it can't be self congruent

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The sales tax in the town where Amanda lives is 7%. Amanda paid $28 in sales tax on a new stereo. What was the price of the ster

Vinil7 [7]

Answer:

$400

Step-by-step explanation:

Question = 28 dollars = 7% of what?

Formula = 28/7% = ? which is equal to 28/0.07 = 400

400 should be the answer so I hope this helps!

6 0

2 years ago

4x>=112 A.25 B.27 C.28 D.33 E.1 F.21

irina1246 [14]

Answer:

Step-by-step explanation:

112 divided by 4 equals 28

8 0

2 years ago

An article claims that 12% of trees are infested by a bark beetle. A random sample of 1,000 trees were tested for traces of the

inna [77]

Answer: 0.6812

Step-by-step explanation:

Let p be the population proportion of trees are infested by a bark beetle.

As per given: p= 12%= 0.12

Sample size : n= 1000

Number of trees affected in sample = 1000

Sample proportion of trees are infested by a bark beetle. = $\hat{p}=\dfrac{127}{1000}=0.127$

Now, the z-test statistic : $z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

So, $z=\dfrac{0.127-0.12}{\sqrt{\dfrac{0.12\times 0.88}{1000}}}$

$z=\dfrac{0.007}{\sqrt{\dfrac{0.1056}{1000}}}\\\\\\=\dfrac{0.007}{\sqrt{0.0001056}}\\\\\\=\dfrac{0.007}{0.010276}\approx0.6812$

Hence, the value of the z-test statistic = 0.6812 .

7 0

3 years ago

A motorist travels 275 km in 5 hours. How far con he travel in 9 hours at the some.

inessss [21]

Answer:

he can travel 495 km in 9 hr

distance covered in one hr = 275\5

distance covered in 9 hrs =495

3 0

2 years ago

to the nearest tenth what is the length of the hypotenuse of an isocoles right angle with a leg 7 3 inches

andrew11 [14]

If the two lengths are 7 and 3, then I believe the length of the hypotenuse would be approximately 7.62.

7 0

2 years ago