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2 years ago

The cost of 7 scarves is $61.25. What is the unit price?

Mathematics

2 answers:

jasenka [17]2 years ago

5 0

$8.75 per scarves , divide 61.25 by 7

Minchanka [31]2 years ago

4 0

Answer:

$8.75

Step-by-step explanation:

$61.25/7 = 8.75

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What is the equation of the line that passes through the point (- 1, 5) and is parallel to the line y = - 3x + 5

Harlamova29_29 [7]

Answer:

Step-by-step explanation:

Parallel lines has the same slope.

The equation of a line that passing through point (x₁, y₁) with a slope of m is:

y - y₁ = m(x - x₁)

m = -3

(-1, 5) ⇒ x₁ = -1, y₁ = 5

Therefore the equation:

y - 5 = -3(x + 1)

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3 years ago

A scale drawing has a scale of 3in:1ft. What is the scale factor?

Hitman42 [59]

Answer:

1 : 4

Step-by-step explanation:

Remember, your units have to match, so

3 in : 1 ft

doesn't look right, change 1 ft to 12 in.

3 in : 12 in

reduce by 3

1 : 4

8 0

3 years ago

Can you help me with these too?<br> its for a geometry final practice<br> plisss

Verizon [17]

The answer is C because my friend has told me it.

4 0

3 years ago

Read 2 more answers

When obtaining a confidence interval for a population mean in the case of a finite population of size N and a sample size n whic

Elanso [62]

Answer:

95% Confidence interval for the mean

$142.8 \leq\mu\leq158.4$

Step-by-step explanation:

We have to calculate a 95% confidence interval for the mean of a finite population.

The error is multiplied by the following finite population correction factor:

$cf=\sqrt{\frac{N-n}{N-1} }$

The standard deviation can be estimated as

$\sigma=\frac{s}{\sqrt{n}} \sqrt{\frac{N-n}{N-1} } =\frac{24.4}{\sqrt{32} }* \sqrt{\frac{200-32}{200-1} }=3.963$

The 95% confidence interval has a z value of 1.96, so it becomes:

$M-z*\sigma_c\leq\mu\leq M+z*\sigma_c\\\\150.6-1.96*3.963\leq\mu\leq 150.6+1.96*3.963\\\\ 142.8 \leq\mu\leq 158.4$

5 0

3 years ago

Please help im so confused

MArishka [77]

Answer:

Step-by-step explanation:

i = $\sqrt{-1}$

i^2 = -1

i^3 = -i

i^4 = 1

(Make sure you know your exponent rules)

$i^4^1 = i^4^0 * i = (i^1^0)^4 * i \\i^4 = 1 \\i^1^0 * i *1 \\i^1^0=1\\1*1*i=i$

3 0

3 years ago