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3 years ago

How would you go about solving this with geometry?

Mathematics

1 answer:

Marysya12 [62]3 years ago

4 0

Answer:

X= 7

Y= 16

Step-by-step explanation:

Solve x then Y

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Solve each system by substitution.

VLD [36.1K]

Answer:

b. no solution

Step-by-step explanation:

change to slope-int form

y=-4x-8

y=-4x+5/2

see how the slopes are the same but the y-int are different? they are parallel, so they never touch

5 0

3 years ago

Given two ways to write an expression 6 (y)?

vichka [17]

You can write the expression 6(y) in the following ways:
6 × y
y × 6
6y

8 0

3 years ago

The length of the entire border of the Unites States is approximately 32,000 miles, 5 8 of which is coastline. How long is the c

Aleksandr [31]

Answer:the coastline is 20000 miles.

The land boundaries are 12000 miles.

Step-by-step explanation:

The length of the entire border of the Unites States is approximately 32,000 miles.

5/8 of the entire length is the coastline. It means that the length of the coastline of the U.S would be

5/8 × 32000 = 20000 miles.

Therefore, the length of the boundaries of the US would be

32000 - 20000 = 12000 miles.

7 0

3 years ago

In the diagram, the dashed figure is the image of the solid figure.

NISA [10]

Answer:

the answer is A because it is ap

3 0

3 years ago

The lengths of lumber a machine cuts are normally distributed with a mean of 100 inches and a standard deviation of 0.3 inch. (

ki77a [65]

Answer:

a) 0.345

b) 0.005

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 100

Standard Deviation, σ = 0.3

We are given that the distribution of lengths of lumber is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(length greater than 100.12 inches)

P(x > 100.12)

$P( x > 100.12) = P( z > \displaystyle\frac{100.12 - 100}{0.3}) = P(z > 0.4)$

$= 1 - P(z \leq 0.4)$

Calculation the value from standard normal z table, we have,

$P(x > 100.12) = 1 - 0.655 = 0.345 = 34.5\%$

b) Standard error due to sampling:

$\displaystyle\frac{\sigma}{\sqrt{n}} = \frac{0.3}{\sqrt{41}} = 0.0468$

P(length greater than 100.12 inches for the sample)

P(x > 100.12)

$P( x > 100.12) = P( z > \displaystyle\frac{100.12 - 100}{0.0468}) = P(z > 2.564)$

$= 1 - P(z \leq 2.564)$

Calculation the value from standard normal z table, we have,

$P(x > 100.12) = 1 - 0.995 = 0.005$

8 0

4 years ago