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2 years ago

13

Angle A and angle B are complementary

1 answer:

Nikitich [7]2 years ago

4 0

Answer:

Step-by-step explanation:

∠A + ∠B = 90° {given they are complementary}

5x+ 15 + 30 = 90

5x + 45 = 90

5x = 90 - 45

5x = 45

x = 45/5

x = 9

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A right triangle has legs that are 11 inches and 13 inches long what is the area of the triangle

blsea [12.9K]

143 the i answer is 143

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2 years ago

Jamie kicked a soccer ball that traveled along a path described by the parabola y = -x^2 +8x, where y equals the height of the s

andrey2020 [161]

We have that
<span>y = -x</span>²<span>+8x

we know that
when the ball hint the ground is the x-intercepts of the graph
the x-intercepts is for y=0
so
0=-x</span>²+8x--------> x²-8x=0----> x*(x-8)=0

the solution is
x=0
x=8

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the distance between the x intercepts points =[8-0]-----> 8 ft

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2 years ago

Read 2 more answers

The mean of four positive integers is 5.

a_sh-v [17]

Answer:

(x1 + x4)/2 = 4

Step-by-step explanation:

(x1 + x2+ x3 + x4)/4 = 5 mean

x1 , x2 , x3 , x4

median (x2+x3)/2 = 6

(x2+x3) = 12

The smallest integer is x1, the largest integer x2.

The mean of the largest and smallest of the integers is (x1 + x2)/2.

(x1 + x2+ x3 + x4)/4 = 5

x1 + x2+ x3 + x4 = 20

x1 + 12 + x4 = 20

x1 + x4 = 20 - 12

x1 + x4 = 8

(x1 + x4)/2 = 8/2

(x1 + x4)/2 = 4

8 0

2 years ago

Helppppp plsssss!!!<br><br>Thanks!!

Anvisha [2.4K]

Answer:

D

Step-by-step explanation:

using the rule of exponents

• $(a/b)^{n}$ = $a^{n}$ / $b^{n}$ , hence

$(7/4)^{11}$ = $7^{11}$ / $4^{11}$ → D

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2 years ago

A baseball player hit 345 out of 1,000 balls pitched to him. What are the chances he gets a hit when he steps up to the plate?

Nimfa-mama [501]

Answer:

0.345

Step-by-step explanation:

hits/at-bats = 345/1000 = 0.345

The probability of a hit, any particular time he goes to bat. is 0.345.

The problem does not request any particular format, so 0.345 is a perfectly good answer.

In baseball, that is called a 'batting average', and is actually expressed that way - as a decimal - in a player's statistics.

On the other hand, if we did want to express the probability as a percentage, we would do this:

0.345 * 100% = (0.345 * 100) % = 34.5 %

Hope this helps

6 0

2 years ago