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2 years ago

8

What is the equation of a circle with center (2,-5) and radius 4?

1 answer:

anastassius [24]2 years ago

7 0

Answer:

Choice C

Step-by-step explanation:

The Equation of a circle is (x-h)^2+(y-k)^2=r^2, where h and k are the x and y coordinates respectively of the center of the circle, and r is the radius. Because the center here is (2, -5), we have (x-2)^2+(y- - 5)^2, and the two minuses become (y+5)^2. This eliminates A and B. The radius is 4, so r^2=16, and thus, we get C.

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Which of the following is equal to the length of the major axis of an ellipse?

kakasveta [241]

Answer:

It's A.

Step-by-step explanation:

The length of the major axis is a + b where a and b are the distances from each focus to any point on the ellipse.

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3 years ago

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HELP!!!!! write the equation below the represents the line passing through the point (-3, -1) negative one with a slope of 4

omeli [17]

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3 years ago

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What's longer? 70 inches or 6 feet

almond37 [142]

6 feet is longer because 6 feet = 72 inchs

and because 70 feet = 5.83333

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3 years ago

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Write the correct answers on the blanks in the following chart. Round decimals to 3 places.

Gennadij [26K]

Answer:

View Attachment

Step-by-step explanation:

I cant explain every single box so I'll explain how you can find the values.

To find percent: Multiply the decimal by 100

To find the decimal: Evaluate the value of the common fraction

To find the common fraction: Rewrite percentage as percentage/100 and then simplify the fraction.

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1 year ago

It's winter and the powder on Vail Mountain has never been better. You decide to measure the snowfall over a three hour period t

jeyben [28]

The best answer is Option A.

Step-by-step explanation:

Increased height of snow = 17 inches

First increase = 5% = 0.05 (Converting the percentages dividing by 100)

Second increase = 8% = 0.08

Third increase = 11% = 0.11

We will first start from where the snowfall has end, therefore,

Third increase = 11% of 17 inches

Third increase = $0.11*17=1.8\ inches$

Subtracting from original height of snow = 17 - 1.8 = 15.2 inches

Second increase = 8% of height before third increase

Second increase = $0.08*15.2 = 1.2\ inches$

Height before second increase = 15.2 - 1.2 = 14 inches

First increase = 5% of height before second increase

First increase = $0.05*14 = 0.7\ inches$

Height before first increase = 14 - 0.7 = 13.3 inches

The snow was 13.3 inches high before it started to snow.

The best answer is Option A.

Keywords: Subtraction, percentages

Learn more about subtraction at:

#LearnwithBrainly

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2 years ago