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2 years ago

What is the ratio of sharpened pencils to unsharpened pencils

Mathematics

1 answer:

KatRina [158]2 years ago

8 0

If 20 pencils are sharpened, and there was 36 to begin with, the answer would be 4:5

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Write in point slope form the equation of a line that has the slope of -4 and the passes

densk [106]

Answer:

point slope form is below. since you have the slope already, all you have to do is plug in the point for x1 and y1 and then the slope for m

y - y1 = m(x -x1)

y - 2 = -4 (x - 2) (this is the equation)

Step-by-step explanation:

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2 years ago

Helppppp<br> helpppppp helppp

NISA [10]

Answer:

intersect at (-1,-3)

Step-by-step explanation:

y = 4x + 1. the points should be at (0,1) and (-0.25,0) and is an infinite line in both directions.

y = -2x - 5. the points should be at (-2.5,0) and (0,-5) and is an infinite line in both directions.

both the lines meet at (-1,-3) so make a point at that location

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2 years ago

Solve variable 3/4x-5=7

soldi70 [24.7K]

Answer:

x=16

Step-by-step explanation:

7+5=12

12 divided by 3/4 is 16

5 0

2 years ago

Does anyone know algebra? If so plz help ASAP

olya-2409 [2.1K]

You need help On what?

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2 years ago

Suppose that distribution of the daily calcium intake of Americans is left skewed with a mean of 800 mg and a standard deviation

babymother [125]

Answer:

Explained below.

Step-by-step explanation:

According to the Central Limit Theorem if an unknown population is selected with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from this population with replacement, then the distribution of the sample means will be approximately normal.

Then, the mean of the sampling distribution of sample means is given by,

$\mu_{\bar x}=\mu$

And the standard deviation of the sampling distribution of sample means is given by,

$\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}$

So, if the sample of daily calcium intake of Americans collected is more than 30, then the sampling distribution of $\bar X$ will be approximately normal.

6 0

2 years ago