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4 years ago

Please help its my 2nd time having to repost this question

Mathematics

2 answers:

Charra [1.4K]4 years ago

4 0

What is the question??

PSYCHO15rus [73]4 years ago

4 0

Slope is a matter of counting the boxes. Slope is change in Y values / Change in X values. Rise / Run. Up / Over —— now knowing this, count the boxes that go up, and put that over the boxes that go across. I’ll do the yellow one with you. 3 up 2 over. That’s 3/2. Now do the same for the orange and you will see that the orange fraction simplifies to 3/2. That indicates that they are the same slope

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11. A scuba diver's elevation changed by -12 3/4 feet every minute. This was

Andrei [34K]

Answer:

-8 1/2 ft / min

Step-by-step explanation:

X = second diver rate

1 1/2 X = -12 3/4

3/2 X = - 51/4

X = - 51/4 * 2/3 = - 102/12 = -8 1/2 ft / min

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2 years ago

Why is 3 divided by 8 is three times 1 divided by 8

GREYUIT [131]

When you multiply any number by one, it equals that number.
So 3 x 1 = 3.

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3 years ago

(PLEASE ANSWER QUICK!) Why is it important to understand properties of angles and figures to solve problems?

kaheart [24]

Answer:

The relationships, properties, and theorems will be easier to understand when ... Just like you don't want to do a geometry problem without all the given ... In case you want to get a head start… here are arguably some of the most important theorems for triangles: ... In the figure below, both congruent angles have one arch.

Step-by-step explanation:

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3 years ago

Test the null hypothesis Upper H 0 : (mu 1 minus mu 2 )equals 0H0: μ1−μ2=0 versus the alternative hypothesis Upper H Subscript a

Law Incorporation [45]

Answer:

The test statistic t is t=2.9037.

The null hypothesis is rejected.

For a significance level of 0.05, there is enough evidence to support the alternative hypothesis.

Step-by-step explanation:

The question is incomplete:

The sample 1, of size n1=25 has a mean of 1.15 and a standard deviation of 0.31.

The sample 2, of size n2=25 has a mean of 0.95 and a standard deviation of 0.15.

This is a hypothesis test for the difference between populations means.

The null and alternative hypothesis are:

$H_0: \mu_1-\mu_2=0\\\\H_a:\mu_1-\mu_2\neq 0$

The significance level is α=0.05.

The difference between sample means is Md=0.2.

$M_d=M_1-M_2=1.15-0.95=0.2$

The estimated standard error of the difference between means is computed using the formula:

$s_{M_d}=\sqrt{\dfrac{\sigma_1^2+\sigma_2^2}{n}}=\sqrt{\dfrac{0.31^2+0.15^2}{25}}\\\\\\s_{M_d}=\sqrt{\dfrac{0.119}{25}}=\sqrt{0.005}=0.069$

Then, we can calculate the t-statistic as:

$t=\dfrac{M_d-(\mu_1-\mu_2)}{s_{M_d}}=\dfrac{0.2-0}{0.069}=\dfrac{0.2}{0.069}=2.9037$

The degrees of freedom for this test are:

$df=n_1+n_2-1=25+25-2=48$

This test is a two-tailed test, with 48 degrees of freedom and t=2.9037, so the P-value for this test is calculated as (using a t-table):

$P-value=2\cdot P(t>2.9037)=0.0056$

As the P-value (0.0056) is smaller than the significance level (0.05), the effect is significant.

The null hypothesis is rejected.

8 0

4 years ago

After how many years will £6,000.00 yield a simple interest of £900.00 at 3%

PilotLPTM [1.2K]

Answer:

add 1 Century to divide £6 000 000

7 0

3 years ago

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