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3 years ago

13

Can someone pls help me

2 answers:

Nadusha1986 [10]3 years ago

4 0

Answer:

0.000145794

Step-by-step explanation:

Simply calculate with a calculator.

balandron [24]3 years ago

4 0

19 to the power of negative3
=19 to the power of negative 1 which gives you .0526315789×3=.1578947367

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What is the abscissa of the midpoint of the line segment whose endpoints are (5√2,2√3) and (√2,2√3)

xxMikexx [17]

Let
A------> <span>(5√2,2√3)
B------> </span><span>(√2,2√3)

we know that
</span>the abscissa<span> and the ordinate are respectively the first and second coordinate of a point in a coordinate system</span>
the abscissa is the coordinate x<span>

step 1
find the midpoint
ABx------> midpoint AB in the coordinate x
</span>ABy------> midpoint AB in the coordinate y
<span>
ABx=[5</span>√2+√2]/2------> 6√2/2-----> 3√2
ABy=[2√3+2√3]/2------> 4√3/2-----> 2√3

the midpoint AB is (3√2,2√3)

the answer is
the abscissa of the midpoint of the line segment is 3√2

see the attached figure

3 0

3 years ago

Read 2 more answers

Someone claims that the average amount of time that a freshman at TAMU studies is 7 hours. We think it’s higher than that and de

Stels [109]

Answer:

Test statistic t = 5.25

P-value = 0.000002 (one-tailed test)

Step-by-step explanation:

This is a hypothesis test for the population mean.

The claim is that the average amount of time that a freshman at TAMU studies is significantly higher than 7 hours.

Then, the null and alternative hypothesis are:

$H_0: \mu=7\\\\H_a:\mu> 7$

The significance level is 0.05.

The sample has a size n=49.

The sample mean is M=8.5.

As the standard deviation of the population is not known, we estimate it with the sample standard deviation, that has a value of s=√s^2=√4=2.

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

$s_M=\dfrac{s}{\sqrt{n}}=\dfrac{2}{\sqrt{49}}=0.29$

Then, we can calculate the t-statistic as:

$t=\dfrac{M-\mu}{s/\sqrt{n}}=\dfrac{8.5-7}{0.29}=\dfrac{1.5}{0.29}=5.25$

The degrees of freedom for this sample size are:

$df=n-1=49-1=48$

This test is a right-tailed test, with 48 degrees of freedom and t=5.25, so the P-value for this test is calculated as (using a t-table):

$\text{P-value}=P(t>5.25)=0.000002$

As the P-value (0.000002) is smaller than the significance level (0.05), the effect is significant.

The null hypothesis is rejected.

There is enough evidence to support the claim that the average amount of time that a freshman at TAMU studies is significantly higher than 7 hours.

6 0

3 years ago

What is the answer to this problem?

eimsori [14]

Answer:

A=3

Step-by-step explanation:

srry if I'm worng. hop it helped

6 0

3 years ago

In a recipe of pancake , to make 4 pancakes they need 1/4 pint of milk.If you want to make 14 pancakes , how much milk is needed

Schach [20]

Use proportional relationships to find the answer

4 0

3 years ago

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Tina reads at least 30 minutes each day. Write an enequality to show how much Tina reads. T = 30 T < 30 T ≥ 30 T ≤ 30

svp [43]

Answer:

$T\geq 30$

Step-by-step explanation:

Let

T ----> the number of minutes that Tina read each day

we know that

The word "at least" means "greater than or equal to"

so

The inequality that represent this situation is

$T\geq 30$

All real number greater than or equal to 30 minutes

7 0

3 years ago