2 years ago

Need to pick three options. please need help on this

Mathematics

1 answer:

disa [49]2 years ago

3 0

The 4th one is the answer

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A car travels 2 5/8 miles in 3 1/2minutes at a constant speed. Which equation represents the distance, d, that the car travels i

kakasveta [241]

Answer:

Step-by-step explanation:

2⅝ miles/(3½ minutes) = (21/8 miles)/(7/2 minutes) = ¾ mile/minute

d = ¾m = 0.75m

8 0

3 years ago

Please help, I don’t really understand how to do this at all.

Alisiya [41]

Answer:

i don't know exactly.

Step-by-step explanation:

but the might be an angle tool online.

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2 years ago

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1 over 6x plus 2 over 3x is equal to 5<br> find the value of x<br> 1/6x + 2/3x =5

Oliga [24]

Answer: x = 1/6 or x = 0.1666666666666...
Hope this helps!

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2 years ago

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Lasers can provide highly accurate measurements of small movements. To determine the accuracy of such a laser, it was used to ta

sp2606 [1]

Answer: $p-value \approx 0.01$

Step-by-step explanation:

Hypothesis testing

$\\\left\{\begin{matrix}H_0 : \mu_0 =0\\ H_1: \mu_0 \neq 0\end{matrix}\right.\\$

For this problem, we need to use the t-student distribution to make inference about the data. We calculate the t-statistics as below:

$\bar{X} = 20\:\mu m\\S.E. = 60\:\mu m\\n=82\\t_{stat} = \frac{\bar{X}-\mu_0}{S.E/\sqrt{n}}=\frac{20-0}{60/\sqrt{82}}=3.0185$

Using a t-statistics table, or using the function TDIST in Microsoft Excel with $t_{stat} = 3.0185,\: df (degree\: of\: freedom) = 14 - 1 = 13$ with two-tailed distribution, we obtain $p-value \approx 0.01$ .

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3 years ago

The volume of a cone is 180 in3. find a function that models the height h of the cone in terms of its radius r.

12345 [234]

volume of a cone = (1/3)*pi*r^2*h
180 = pi(r^2)h
180/pi(r*2) = h

5 0

3 years ago

Need to pick three options. please need help on this​

Need to pick three options. please need help on this