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3 years ago

Use properties of rational numbers to multiply the following. -45 x (-85)

1 answer:

4 0

Multiplying -45 and -85
$\frac{ - 45}{1} \times \frac{ - 85}{1} = \frac{ - 45 \times ( - 85)}{1 \times 1} = \frac{3825}{1}$
So 3825 is the final answer.

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He mean potassium content of a popular sports drink is listed as 140 mg in a 32-oz bottle. Analysis of 20 bottles indicates a sa

mezya [45]

Answer: (A) H0: μ = 140 mg vs. H1: μ ≠ 140 mg

Step-by-step explanation:

Usually null hypothesis represents the claim that the values associated to the groups being tested have no statistical difference but alternative hypothesis supports the claim that there is statistical difference.

Let $\mu$ be the population mean .

We are given that the mean potassium content of a popular sports drink is listed as 140 mg in a 32-oz bottle.

i.e. Null hypothesis : $H_0:\mu=140$

Alternative hypothesis for two tail hypothesis has sign (≠).

i.e. Alternative hypothesis : $H_1 : \mu\neq140$

∴ The hypotheses for a two-tailed test of the claimed potassium content:

H0: μ = 140 mg vs. H1: μ ≠ 140 mg

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4 years ago

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It would be 50%. because half numbers and half letters

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4 years ago

A triangle has sides with lengths of 5x-7,3x-4 and 2x-6. What is the perimeter of the triangle?

boyakko [2]

The perimeter is the sum of all the sides, so P = (5x -7) + (3x-4) + (2x -6). Then group like terms so you have p = 5x + 3x + 2x -7-4-6 and end up with P = 10x - 17

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3 years ago

EASY! WILL MARK BRAINEST!! What is f(3) for the function f(x)=7x+5

Debora [2.8K]

Answer:

26 is the answer

Step-by-step explanation:

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3 years ago

A litter of 9 kittens available for adoption at the Humane Society has four orange kittens and five black kittens. A family come

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Answer:

Step-by-step explanation:

What is required is the probability of selecting one orange and one black kitten.

outcomes ( 1 O and 1B) = 4C1 * 5C1

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Note: the order of color does not matter it is simply a matter of selection hence only combinations are made NOT permutations.

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P (1O and 1B) = (4C1 * 5C4) / 9C2 = 0.5556

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4 years ago