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3 years ago

Help plz will give brainliest if you explain how u got the answer! PLZ!

Mathematics

1 answer:

sasho [114]3 years ago

4 0

Answer:

2x-y=4

Step-by-step explanation:

y=mx+b

b is the y-intercept which is -4

y=mx-4

find m(slope)

(2,0) and (0,-4)

(-4-0)/(0-2)

-4/-2=2 m=2

y=2x-4

add 4 to both sides

y+4=2x subtract y

4=2x-y

It says write in standard form which looks like this: 3x + 5y = 4

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2 years ago

Determime the measures of angles X,y and Z

Ierofanga [76]

Answer:

X = 75°

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Step-by-step explanation:

8 0

3 years ago

Speeding: On a stretch of Interstate-89, car speed is a normally distributed variable with a mean of 69.1 mph and a standard dev

Alborosie

Answer: 11.9%

Step-by-step explanation:

Given : On a stretch of Interstate-89, car speed is a normally distributed variable with $\mu=69.1$ mph and $\sigma=3.3$ mph.

Let x be a random variable that represents the car speed.

Since , $z=\dfrac{x-\mu}{\sigma}$

z-score corresponds x = 73 , $z=\dfrac{73-69.1}{3.3}\approx1.18$

Required probability :

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[using z-value table.]

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8 0

3 years ago

An automatic doughnut machine can produce 1500 doughnuts in 9 hours.

Svetllana [295]

Answer:

1 hr, 48 minutes

Step-by-step explanation:

you can create a proportion:

doughnuts/hours = doughnut/hours (h)

1500/9 = 300/h

cross-multiply to get:

1500h = 2700

h = 27/15

h = 1 12/15, which is 1 hr, 48 minutes because 12/15 = 48/60

7 0

2 years ago

Kevin earns $6.75 an hour. At this rate how much does he earn in40 hours?

Elenna [48]

Answer:

$270

Step-by-step explanation:

Simply take the per hour rate and multiply it by the number of hours.

6.75 X 40 = 270

3 0

3 years ago