2 years ago

Math question 18 points >:)!

Mathematics

1 answer:

mash [69]2 years ago

5 0

Which one did you choose first? it’s either B or C, i’m leaning more towards B though :))

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Please help me with this math problem <br>Evaluate C/2 - 3 + 6/D when c=14 and d=3

lbvjy [14]

$\frac{c}{2} - 3 + \frac{6}{d } = \\ = \frac{14}{2} - 3 + \frac{6}{3} = \\ = 7 - 3 + 2 = \\ = 6$

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3 years ago

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According to exponent rules, when we divide the expressions we<br> exponents.

ValentinkaMS [17]

The quotient rule for exponents states that if we divide exponents with the same base, then we can subtract the exponents and keep the base unchanged.

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2 years ago

You and your friend buy 2 fruit smoothies and leave a tip. You split the total and your half comes to 3.60. What percent tip did

NNADVOKAT [17]

The percent of the tip left is 20% from $3.60

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2 years ago

Hellen is using 3.508 grams of copper for her science experiment. How many kilograms of copper did Hellen use for her science ex

mash [69]

Answer:

.003508 kg of copper

Step-by-step explanation:

1000 grams = 1 kg

3.508 g/1000 g = .003508 kg

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2 years ago

Lucy is using a one-sample t ‑test based on a simple random sample of size n = 22 to test the null hypothesis H 0 : μ = 16.000 c

slega [8]

Answer:

The value of test statistic is 1.338

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 16.000

Sample mean, $\bar{x}$ = 16.218

Sample size, n = 22

Alpha, α = 0.05

Sample standard deviation, s = 0.764

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 16.000\text{ cm}\\H_A: \mu < 16.000\text{ cm}$

We use one-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{16.218 - 16.000}{\frac{0.764}{\sqrt{22}} } = 1.338$

Thus, the value of test statistic is 1.338

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3 years ago