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grin007 [14]
3 years ago
15

Can someone solve this pls???

Mathematics
2 answers:
soldier1979 [14.2K]3 years ago
8 0

Answer:

i think is( C.) distance and speed

hoped i helped

ra1l [238]3 years ago
4 0
I’m pretty sure it’s B because if you look at the chart it says time and distance
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In a small private​ school, 6 students are randomly selected from 17 available students. What is the probability that they are t
Sindrei [870]

Answer:

<u>1/8910720</u>

Step-by-step explanation:

Number of ways they can be chosen :

⇒ 17 × 16 × 15 × 14 × 13 × 12

⇒ 272 × 15 × 14 × 13 × 12

⇒ 4080 × 14 × 13 × 12

⇒ 57120 × 13 × 12

⇒ 742560 × 12

⇒ <u>8910720</u>

Hence, the probability will be :

⇒ P = 1 / number of ways

⇒ P = <u>1/8910720</u>

8 0
2 years ago
Helppppppppppppppppppppppppppppppp
LuckyWell [14K]
Answer:
10√3 which is the last option

Explanation:
√30 * √10 = (30*10)^1/2
                = 300^1/2

300 = 100 * 3
Therefore:
√300 = √100 * √3 = 10√3

Hope this helps :)
5 0
3 years ago
A student carried out an experiment to determine the amount of vitamin C in a tablet sample. He performed 5 trials to produce th
ivolga24 [154]

Answer:

There is not enough evidence to support the claim that the amount of vitamin C in a tablet sample is different from 500 mg.

P-value = 0.166.

Step-by-step explanation:

We start by calculating the mean and standard deviation of the sample:

M=\dfrac{1}{n}\sum_{i=1}^n\,x_i\\\\\\M=\dfrac{1}{5}(490+502+505+495+492)\\\\\\M=\dfrac{2484}{5}\\\\\\M=496.8\\\\\\s=\sqrt{\dfrac{1}{n-1}\sum_{i=1}^n\,(x_i-M)^2}\\\\\\s=\sqrt{\dfrac{1}{4}((490-496.8)^2+(502-496.8)^2+(505-496.8)^2+(495-496.8)^2+(492-496.8)^2)}\\\\\\s=\sqrt{\dfrac{166.8}{4}}\\\\\\s=\sqrt{41.7}=6.5\\\\\\

Then, we can perform the hypothesis t-test for the mean.

The claim is that the amount of vitamin C in a tablet sample is different from 500 mg.

Then, the null and alternative hypothesis are:

H_0: \mu=500\\\\H_a:\mu< 500

The significance level is 0.05.

The sample has a size n=5.

The sample mean is M=496.8.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=6.5.

The estimated standard error of the mean is computed using the formula:

s_M=\dfrac{s}{\sqrt{n}}=\dfrac{6.5}{\sqrt{5}}=2.907

Then, we can calculate the t-statistic as:

t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{496.8-500}{2.907}=\dfrac{-3.2}{2.907}=-1.1

The degrees of freedom for this sample size are:

df=n-1=5-1=4

This test is a left-tailed test, with 4 degrees of freedom and t=-1.1, so the P-value for this test is calculated as (using a t-table):

\text{P-value}=P(t

As the P-value (0.166) is bigger than the significance level (0.05), the effect is not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the amount of vitamin C in a tablet sample is different from 500 mg.

4 0
3 years ago
I am confused and i dont know how i would do this
Crank

Answer:

5760

Step-by-step explanation:

I do 12 x 12 x 10 x 4= 5760

3 0
3 years ago
Find the maximum or minimum of the following quadratic function: y = 16x2+ 40x + 25.
Irina-Kira [14]

the answer to your question is c. -25


4 0
3 years ago
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