Convert 23/99 into a decimal

Find the perimeter of ABC with vertices A (1,-6), B (1,-3),<br> and C (-4,-6).

Crazy boy [7]

Answer:

$p = 8 + \sqrt{34} = 13.83095...$

Step-by-step explanation:

we can easily calculate the perimeter of three points, using vectors. See the picture...

5 0

3 years ago

to find out whether a new serum will arrest leukemia, mice, all with an advanced stage of the disease, are selected. mice rec

8_murik_8 [283]

No, the serum is not effective because the p-value for the hypothesis test is greater than the level of significance, and the null hypothesis that the means of the two populations are equal is not rejected.

We are given the hypothesis as:

H₀: μ₁ − μ₂ = 0

H₁: μ₁ − μ₂ ≠ 0 where,

H₀ = the null hypothesis,

H₁ = the alternative hypothesis.

Calculate the test statistic. The equation is:

t = x₁ - x₂ / √pooled variance(1/n₁ + 1/n₂)

Substituting the values, we get that:

t = 2.86 - 2.075 / 2.81(1/5 + 1/4) = 0.699

We need to find the value of 0.699 from the t lookup table and the two-tailed probability is 0.5071.

Therefore, No, the serum is not effective because the p-value for the hypothesis test is greater than the level of significance, and the null hypothesis that the means of the two populations are equal is not rejected.

Know more about “hypothesis” here: brainly.com/question/11555274

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8 0

2 years ago

Read 2 more answers

Use the regression equation to estimate the value of the car 8 years after purchase. Round to the nearest dollar.

katrin2010 [14]

Answer: $6019

Step-by-step explanation:

plug 8 into the equation -3223.31(multiply by 8 in place of x)+31805.58

and you'll get 6019.1 but it will only be right if you round to 6019

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