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3 years ago

Please help me! 50 Points!

Mathematics

2 answers:

JulijaS [17]3 years ago

8 0

Answer:

Maybe you had lotion on your hands before you left and forgot to lock your door. That's kind of the only thing i can think of since i don't live with you and there most probably isn't any greased up burglars running around in your neighborhood.

And you didn't know which category it went under so the first thing you chose was math?

erik [133]3 years ago

3 0

Well...... It could be forgetfullness on locking a door. Maybe your mom was cooking and she had oil penetrated in her hands, which then reached the door knob. There are many different possibilities, but this question is a little vague. This may be something you have to think about since you are living in your house.

Hope this helps :) Brainliest?

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Write the equation of the line when m = 4 and the point (3, 15) lies on the line.

Nonamiya [84]

Answer:

y=4x+3

Step-by-step explanation:

y=mx+b

15=4(3)+b

15=12+b

-12 -12

3=b

y=4x+3

6 0

3 years ago

Solve for x. Round if needed. Image is below.

Lisa [10]

Answer:

x = 16

Step-by-step explanation:

3x + 1 = 49 ( vertical angles )

Subtract 1 from both sides )

3x = 48 ( divide both sides by 3 )

x = 16

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4 years ago

In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the portion of the brain responsibl

schepotkina [342]

Answer:

$t=\frac{8.19-9.02}{\frac{0.8}{\sqrt{17}}}=-4.28$

The degrees of freedom are given by

$df=n-1=17-1=16$

The p value would be given by this probability:

$p_v =P(t_{(16)}$

Since the p value is lower than the significance level provided of 0.01 we have enough evidence to reject the null hypothesis and we can conclude that the true mean is significantly lower than 9.02 cm^3

Step-by-step explanation:

Information given

$\bar X=8.19 cm^3$ represent the sample mean

$s=0.8 cm^3$ represent the sample deviation

$n=17$ sample size

$\mu_o =9.02$ represent the value to verify

$\alpha=0.01$ represent the significance level for the hypothesis test.

t would represent the statistic

$p_v$ represent the p value

System of hypothesis to check

We want to check if the true mean is less than the normal value of 9.02 cm^3, the system of hypothesis would be:

Null hypothesis: $\mu \geq 9.02$

Alternative hypothesis: $\mu < 9.02$

The statistic for this case is given by:

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

Replacing the info given we got:

$t=\frac{8.19-9.02}{\frac{0.8}{\sqrt{17}}}=-4.28$

The degrees of freedom are given by

$df=n-1=17-1=16$

The p value would be given by this probability:

$p_v =P(t_{(16)}$

6 0

3 years ago

Use the figure to answer the question.

timurjin [86]

Answer:

5 x 5 =25

25 x 8 = 200

8x8= 64

64 x 1= 64

Add the two number underlined

Answer is 264

5 0

3 years ago

8÷(3-1) _2 ×5-2 plssss help

Scilla [17]

Answer:

Step-by-step explanation:

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8 0

3 years ago