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2 years ago

Please help it’s geometry :(

Mathematics

1 answer:

katrin2010 [14]2 years ago

5 0

Answer:

$\sqrt{85}$

Step-by-step explanation:

Using the distance formula:

$x=\sqrt{(5-(-2))^2+(3-(-3))^2}=\sqrt{7^2+6^2}=\sqrt{49+36}=\sqrt{85}$

Hope this helps!

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A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past

Volgvan

Answer: We reject the null hypothesis, and we use Normal distribution for the test.

Step-by-step explanation:

Since we have given that

We claim that

Null hypothesis : $H_0:\mu\geq 50000$

Alternate hypothesis : $H_1:\mu$

There is 5% level of significance.

$\bar{X}=46800\\\\\sigma=9800\\\\n=29$

So, the test statistic would be

$z=\dfrac{\bar{X}-\mu}{\dfrac{\sigma}{\sqrt{n}}}\\\\z=\dfrac{46800-50000}{\dfrac{9800}{\sqrt{29}}}\\\\z=-1.75$

Since alternate hypothesis is left tailed test.

So, p-value = P(z≤-2.31)=0.0401

And the P-value =0.0401 is less than the given level of significance i.e. 5% 0.05.

So, we reject the null hypothesis, and we use Normal distribution for the test.

4 0

3 years ago

(Will give brainliest to correct answer.)

Alex73 [517]

The answer would be 15.

7 0

3 years ago

Read 2 more answers

The cost of a t-shirt is 8.50. David has $50 with him. How many t-shirt can he buy?

anzhelika [568]

50÷8.5 = 5.88 but since we can’t have .88 of a person the answer would be five T-shirts

3 0

1 year ago

58 yd<br> 73 yd<br> Use 3.14 Instead Of Pie Symbol

defon

Answer:

$771096.8 \: yd^{3}$

Step-by-step explanation:

If you are trying to find the volume, you would use the formula:

$\pi \: r ^{2} (h)$

You would plug in the radius (r), which is 58, and then plug in the height, which is 73.

Make sure you remember to use 3.14 and not the pi key if you are using a calculator.

The final answer is 771,096.8 yd^3

7 0

3 years ago

(3x + 3x²) + (2x² + 2x)?

Galina-37 [17]

Answer:

=5x2+5x

Step-by-step explanation:

Let's simplify step-by-step.

3x+3x2+2x2+2x

8 0

2 years ago