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3 years ago

A sphere has a diameter of 14.5 inches.

Mathematics

1 answer:

dlinn [17]3 years ago

4 0

Answer:

≈ 660.5 in²

Step-by-step explanation:

The surface area (A) of a sphere is calculated using the formula

A = 4πr² ← r is the radius

Given diameter = 14. 5 then radius = 7.25, thus

A = 4π × 7.25² = 4π × 52.5625 ≈ 660.5 in²

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In a class test of 15 questions, (+4) marks are given for every correct answer, (– 2) marks are

romanna [79]

If he answered 3 questions correctly, then the number of questions is got wrong is 7 and the number of questions that he did not attempt is 5.

<h3>What is the linear system?</h3>

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

In a class test of 15 questions, (+4) marks are given for every correct answer, (– 2) marks are given for every incorrect answer, and 0 marks are given for questions that are not attempted. Punit scored (– 2) marks.

If he answered 3 questions correctly, then the number of the question are got wrong and the number of the question that he did not attempt.

Let x be the correct question and y be the incorrect question, z be the number of questions that he did not attempt, and A be the number of the total score. Then we have

4x – 2z = A

x + y + z = 15

If A = -2 and x = 3, then we have

4 × 3 – 2z = -2

12 + 2 = 2z

z = 7

Then the value of y will be

3 + y + 7 = 15

y = 5

More about the linear system link is given below.

brainly.com/question/20379472

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2 years ago

The Smith family was one of the first to come to the U.S. They had 5 children. Assuming that the probability of a child being a

anastassius [24]

Answer:

children

Step-by-step explanation:

5 0

3 years ago

Divide 3x^2+6 by 3x-3

lorasvet [3.4K]

Answer:

3x+3

Step-by-step explanation:

$\frac{3x^2+6}{3x-3}=3x+3$

4 0

3 years ago

Read 2 more answers

Please answer the question below and show working

strojnjashka [21]

Answer:

i. Slope=-1/6

ii. Midpoint= (1,8.5)

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6 0

3 years ago

Branden and Pete both play running back. Branden carries the ball 75 times for 550 yards and Pete had 42 carries for 380 yards w

mars1129 [50]

Answer:

Pete runs farther per carry.

Step-by-step explanation:

Given:

Branden and Pete both play running back.

Branden carries the ball 75 times for 550 yards.

Pete had 42 carries for 380 yards

Question asked:

Who runs farther per carry ?

Solution:

First of all we find each boy's distance covered per carry:-

For Branden

Branden carries the ball 75 times for = 550 yards.

Branden carries the ball 1 time for = $\frac{550}{75} =7.34\ yard$

For Pete

Pete carries 42 times for = 380 yards

Pete carries 1 time for = $\frac{380}{42} =9.05\ yards$

As Pete runs 9.05 yards for 1 carry while Branden runs 7.34 yards for 1 carry, hence Pete runs farther per carry.

3 0

3 years ago