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3 years ago

The perimeter of a rectangular pool is 258 m.

Mathematics

1 answer:

postnew [5]3 years ago

5 0

Answer:

Step-by-step explanation:

Im 99% sure this is right because

51x2=102

258-102=156

156÷2=78

^•^

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What’s the answer Answer this

Yakvenalex [24]

Answer:

x= -6

Step-by-step explanation:

equation: -10 - 2x = 2x + 14

subtract 14 from both sides: -24 - 2x = 2x

add 2x to both sides: -24 = 4x

divide both sides by 4: -6 = x

7 0

4 years ago

A football player punts a ball. The path of the ball can be modeled by the equation y = –0.004x2 + x + 2.5, where x is the horiz

Galina-37 [17]

The answer is 252.5 ft

y = –0.004x² + x + 2.5
Let's take y = 0 and we'll get the quadratic equation:

–0.004x² + x + 2.5 = 0
The general formula for quadratic equation is:
ax² + bx + c = 0

a = -0.004
b = 1
c = 2.5

$x_{1,2} = \frac{-b+/- \sqrt{ b^{2}-4ac} }{2a} =\frac{-1+/- \sqrt{ 1^{2}-4*(-0.004)*2.5} }{2*(-0.004)} = \frac{-1+/- \sqrt{1+0.04} }{-0.008} = \\ 
=\frac{-1+/- \sqrt{1.04} }{-0.008} = \frac{-1+/-1.02}{-0.008}$

$x_1=\frac{-1+1.02}{-0.008} = \frac{0.02}{-0.008} = -2.5 \\ 
x_2=\frac{-1-1.02}{-0.008} = \frac{2.02}{-0.008} = 252.5$

Since distance cannot be negative (x1), the correct answer is x2 = 252.5 ft

5 0

3 years ago

Read 2 more answers

How do I find the X? (sorry the triangle is really small-)

Ber [7]

Answer:

C. 98

Step-by-step explanation:

The sum of angles interior to a triangle is 180°, so you have ...

x + 38° + 44° = 180° . . . the sum of the angles (this is your equation)

x + 82° = 180° . . . . . . . . collect terms

x = 180° -82° . . . . . . . . . subtract 82° from both sides of the equation

x = 98° . . . . . . . . . . . . . . do the arithmetic

_____

Comment on the equation

The relations you learn about in math and geometry can all be translated to equations. When you learn "something" is "something else", anytime you have "something", you can always write the equation ...

something = (something else)

When you find out "the sum of angles" is "180 degrees", that means you can write the equation ...

(sum of angles) = 180°

Of course, you find a sum by adding things up. In this case, you're adding up the values of the angles: x, 38°, 44°. The next step is to use the rules of algebra to solve the equation for x.

3 0

3 years ago

Marissa has 64 feet of fencing. She is using the fencing to border a rectangular flower garden. Marissa wants the length of the

Maslowich

Answer:

240

Step-by-step explanation:

Assign Variables:

(I will choose mine a little bit differently)

d = length of garden

d = 20 feet

w = width of garden

A = area of garden

Equations and Solution:

A=d%2Aw and perimeter given as 64 feet means 2d%2B2w=64.

We know what is the d value, so we want to solve for w.

2w=64-2d

w=32-d

w=32-20

highlight%28w=12%29 feet

FINDING AREA VALUE

A=d%2Aw

A=20%2A12

highlight%28A=240%29 square feet

6 0

3 years ago

Please help for brainliest answer

Naya [18.7K]

Answer:

a) An event with probability 0 is said to be impossible

b) An event with probability 1 is said to be certain

c) The probability of getting a head when flipping an unbiased coin is shown by the letter A

Step-by-step explanation:

a) If something has a 0 on a probability scale, it will never happen. The word used to describe this outcome is impossible.

b) If something has a 1 on a probability scale, it will always happen. The word used to describe this outcome is certain.

c) The probability of getting a head on an unbiased coin is $\frac{1}{2}$ or $0.50$ . This means that we are looking for the letter that is in the exact center of 0 and 1. It can be seen that A is in the dead center of these two numbers, so this is our answer.

5 0

3 years ago