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2 years ago

100 points HELP ASAP!!!!!

Mathematics

2 answers:

Dahasolnce [82]2 years ago

5 0

B I think??? Because in the first paragraph and last they all compare about how long it took and how good.

TiliK225 [7]2 years ago

3 0

awnser for a: d

awnser for b: a

anything else ?

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Can someone help me I'm doing my packet and the quest is hard

CaHeK987 [17]

The answer would be y=-3/4x-3

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2 years ago

Will give brainlyiest answer if explained.

Deffense [45]

C. The three angles on the bottom are all exactly the same.

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3 years ago

Y/5+7=9 solve the problem by using addition or subtraction and multiply and divide

Elis [28]

Answer:

y=10

Step-by-step explanation:

y/5+7=9

y/5=9-7

y/5=2

y=2*5

y=10

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2 years ago

A lathe is set to cut bars of steel into lengths of 6 cm. The lathe is considered to be in perfect adjustment if the average len

Gnom [1K]

Answer:

$t=\frac{5.97-6}{\frac{0.4}{\sqrt{93}}}=-0.723$

E. -0.723

$df=n-1=93-1=92$

$p_v =2*P(t_{(92)}$

Since the p value is very high we don't have enough evidence to conclude that the true mean for the lengths is different from 6 cm.

Step-by-step explanation:

Information provided

$\bar X=5.97$ represent the sample mean for the length

$s=0.4$ represent the sample standard deviation

$n=93$ sample size

$\mu_o =6$ represent the value that we want to test

$\alpha=0.05$ represent the significance level

t would represent the statistic

$p_v$ represent the p value for the test

System of hypothesis

We need to conduct a hypothesis in order to check if the lathe is in perfect adjustment (6cm), then the system of hypothesis would be:

Null hypothesis: $\mu = 6$

Alternative hypothesis: $\mu \neq 6$

since we don't know the population deviation the statistic is:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

Replacing in formula (1) we got:

$t=\frac{5.97-6}{\frac{0.4}{\sqrt{93}}}=-0.723$

E. -0.723

P value

The degrees of freedom are given by:

$df=n-1=93-1=92$

Since is a two tailed test the p value would be:

$p_v =2*P(t_{(92)}$

Since the p value is very high we don't have enough evidence to conclude that the true mean for the lengths is different from 6 cm.

5 0

3 years ago

Genesis’ basketball team won 32% of the games that they played this year and if they won 16 games, how many games they play this

ANTONII [103]

Answer:

$50\ games$

Step-by-step explanation:

Let

x-----> the total number of games the team played this year

Using proportion

$\frac{32\%}{16}=\frac{100\%}{x}\\ \\x=16*100/32\\ \\x=50\ games$

8 0

3 years ago