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3 years ago

-1/2(x+4)=y-2 2x-y=4 Find the slope, x-intercept, and y-intercept for both equations

Mathematics

1 answer:

FinnZ [79.3K]3 years ago

7 0

Answer:

Step-by-step explanation:

slope of a linear equation is m = y2 -y1/x2-x1

x- intercept, is where y = 0

y- intercept is where x = 0

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Three ballet dancers are positioned on stage. Greta is straight behind Bryan and directly left of Alice. If Bryan and Greta are

Neko [114]

Answer:

Step-by-step explanation:

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2 years ago

What is the surface area of a sphere with radius 4?

mario62 [17]

Answer: 64 units

Step-by-step explanation:

Remember, the formula to find surface area given radius is $4\pi r^2$ . Let's add in the given information:

4pi4^2 =

4pi16

64pi!

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1 year ago

Please help please ASAP please help ASAP please ASAP ASAP

Fiesta28 [93]

Answer:

2.79

Step-by-step explanation:

Given

With reference angle 21°

hypotenuse (h) = 3

base (b) = x

Now

cos 21° = b / h

0.93 = x / 3

x = 0.93 * 3

x = 2.79

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3 years ago

You want to create a 99% confidence interval with a margin of error of .5. Assuming the population standard deviation is equal t

miss Akunina [59]

Answer:

Sample size minimum is 60

Step-by-step explanation:

given that you want to create a 99% confidence interval with a margin of error of .5.

The population standard deviation is equal to 1.5

i.e. $\sigma = 0.5$

Confidence level = 99%

Since population std deviation is known, we can use Z critical value for finding margin of error

Z critical value for 99% = 2.58

Margin of error = $2.58*\frac{1.5}{\sqrt{n} }$

Equate this to 0.5 and solve for n

$2.58*\frac{1.5}{\sqrt{n} }=0.5\\\sqrt{n} =7.74\\n =59.90\\n=60$

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3 years ago

Name the property 3. 7/9* 1= 7/9

Nutka1998 [239]

Answer:

identify-multiplication

Step-by-step explanation:

anything you multiply by 1 is most likely going to be in the identify property

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3 years ago