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3 years ago

10

A batted baseball leaves the bat at an angle of θ with the

1 answer:

Semmy [17]3 years ago

5 0

Answer:

Sixty Baseball Physics Problems © page 1 ! ! Sixty Baseball Physics Problems (many with correct solutions!) Sixty Baseball Physics Problems

Step-by-step explanation:

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Help please this is khan academy

IRISSAK [1]

Answer:

9800 cm^2

Step-by-step explanation:

The area of a square is just the length of one of the sides squared. In the first image it's given that one of the sides is 70 cm and the shape is also a square pyramid so the base is going to be a square. So the area the base is (70 cm) ^ 2 = 4,900 cm^2. The area of a triangle is 1/2 bh. The base is given in the first image which is 70 cm and the height is also given which is 140 cm. This gives you the equation 0.5 * 140 cm * 70 cm = 4900 cm^2. Adding these two values gives you 9800 cm^2

6 0

2 years ago

Solve x2 + 14x = −24 by completing the square.

Aleks04 [339]

Option A

The solution set of the equation is {-12, -2}

<h3><u>Solution:</u></h3>

Given equation is:

$x^2 + 14x = -24$

We have to find the solution set of this equation by completing the square

First, rearrange the equation so that only zero will be on the right side:

$x^2 + 14x + 24 = 0$ ----- eqn 1

<em><u>The general form of quadratic equation is:</u></em>

$ax^2 + bx + c = 0$ where $a \neq 0$

On comparing the given eqn 1 with general quadratic equation, we get

a = 1

b = 14

c = 24

In completing the square, we take half of coefficient of middle term "x" and then square it. Then we add it on both sides of the equation

So to complete the square, add $(\frac{b}{2})^2$ to both sides of the equation

$x^2 + 14x + 24 + (\frac{14}{2})^2 = (\frac{14}{2})^2$

$x^2 + 14x + 24 + 7^2 = 7^2\\\\x^2 + 14x + 24 + 49 = 49$

$x^2 + 14x + 24 + 49 = 49\\\\x^2 + 14x + 49 = 49 - 24\\\\x^2 + 14x + 49 = 25\\\\(x + 7)(x + 7) = 25\\\\(x + 7)^2 = 25$

Take square root on both sides

$x + 7 = \sqrt{25}$

$x+7=\pm 5$

Now make two equations

x + 7 = + 5 and x + 7 = -5

x = +5 - 7 = -2

x = -2

And,

x + 7 = -5

x = -5 - 7 = -12

x = -12

Therefore, the solution set of the equation is {-12, -2} and option A is correct

6 0

3 years ago

Read 2 more answers

Determine the missing exponent<br>2^5=1/4

Alinara [238K]

Answer:

false

Step-by-step explanation:

3 0

3 years ago

Find the exact value of COS 300°

pav-90 [236]

Answer:

cos 300° = cos 60° = 0.5

7 0

3 years ago

Evaluate −3x+y2÷(−1) when x=8 and y=5.

vekshin1

Answer:

-34

brainlist please?

4 0

3 years ago