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likoan [24]
4 years ago
12

What is your estimate for the number of airline flights in a year?

Mathematics
1 answer:
Firdavs [7]4 years ago
8 0
The answer is between 45,000,000-65,000,000
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Can anyone help with this???
VikaD [51]

Answer:

56.25

Step-by-step explanation:

The number you need to add to both sides to complete the square needs to be calculated by doing (\frac{b}{2})². So, in this problem, b= -15.

-15/2 = -7.5, and -7.5² = 56.25. This is the number you will add to complete the square

6 0
4 years ago
Find the area of the right triangle. If necessary, round to the nearest tenth
Ad libitum [116K]

Answer:

B. 150 yards

Step-by-step explanation:

Area of a Triangle = .5 * Base * height

So we need the height of the triangle, or the missing side.

We have to use Pythagorean Theorem to solve this:

A^2 + B^2 = C^2

15 ^ 2 + B ^ 2 = 25 ^2

b^2 = 25^2 - 15 ^ 2

b^2 = 625 - 225

b^2 = 400

sqrt (400) = 20

The missing height is 20. Now we plug it into 1/2 * b * H

.5 * 15 * 20

7.5 * 20 = 150

150 Yds

6 0
4 years ago
Was it evaluated correct?<br>explain your reasoning​
natali 33 [55]

Answer:

Yes

Step-by-step explanation:

Yes.  They did exponents and grouping symbols first, then multiplication and division left to right.  Addition came before multiplication and division because it was inside a grouping symbol.

8 0
3 years ago
1. Find the slope of the graph.
zimovet [89]

Answer:

slope 1 is 5/3 slope 2 is -2/3 slope 3 is non existent

Step-by-step explanation:

you put rise over run for example in the first the points it crosses is 5 up and 3 to the right so 5/3

3 0
3 years ago
Hey can you please help me posted picture of question
Debora [2.8K]
We can use quadratic formula to determine the roots of the given quadratic equation.

The quadratic formula is:

x= \frac{-b+- \sqrt{ b^{2} -4ac} }{2a}

b = coefficient of x term = -11
a = coefficient of squared term = 2
c = constant term = 15

Using the values, we get:
x= \frac{11+- \sqrt{121-4(2)(15)} }{2(2)} \\  \\ &#10;x= \frac{11+-1}{4} \\  \\ &#10;x=3, x= 2.5

So, the correct answer to this question are option B and D
4 0
4 years ago
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