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Svetllana [295]
3 years ago
14

The perimeter of a rectangular pool is 258 m.

Mathematics
1 answer:
postnew [5]3 years ago
5 0

Answer:

78

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 <br> 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 <span>252.5 ft

</span><span>y = –0.004x</span>²<span> + x + 2.5
Let's take y = 0 and we'll get the quadratic equation:

</span>–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} = \\ &#10;=\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 \\ &#10;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

_____

<em>Comment on the equation</em>

The relations you learn about in math and geometry can all be translated to equations. When you learn "something" <em>is</em> "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
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