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mrs_skeptik [129]

3 years ago

11

PLEASE HELP ME ASAP. Thanks

2 answers:

Monica [59]3 years ago

7 0

67 Animals. Hope this helps!

lawyer [7]3 years ago

4 0

C=67 animals
hope this helps:)))))))))

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Use a half-angle identity to find the exact value

Tatiana [17]

Given:

$\cos 15^{\circ}$

To find:

The exact value of cos 15°.

Solution:

$$\cos 15^{\circ}=\cos\frac{ 30^{\circ}}{2}$

Using half-angle identity:

$$\cos \left(\frac{x}{2}\right)=\sqrt{\frac{1+\cos (x)}{2}}$

$$\cos \frac{30^{\circ}}{2}=\sqrt{\frac{1+\cos \left(30^{\circ}\right)}{2}}$

Using the trigonometric identity: $\cos \left(30^{\circ}\right)=\frac{\sqrt{3}}{2}$

$$=\sqrt{\frac{1+\frac{\sqrt{3}}{2}}{2}}$

Let us first solve the fraction in the numerator.

$$=\sqrt{\frac{\frac{2+\sqrt{3}}{2}}{2}}$

Using fraction rule: $\frac{\frac{a}{b} }{c}=\frac{a}{b \cdot c}$

$$=\sqrt{\frac {2+\sqrt{3}}{4}}$

Apply radical rule: $\sqrt[n]{\frac{a}{b}}=\frac{\sqrt[n]{a}}{\sqrt[n]{b}}$

$$=\frac{\sqrt{2+\sqrt{3}}}{\sqrt{4}}$

Using $\sqrt{4} =2$ :

$$=\frac{\sqrt{2+\sqrt{3}}}{2}$

$$\cos 15^\circ=\frac{\sqrt{2+\sqrt{3}}}{2}$

5 0

3 years ago

If the probability that Caleb makes a free-throw is 60% what is the probability that Kayla makes two free throws in a row?

ipn [44]

You cannot tell with the data 60%

7 0

3 years ago

Martha has 8 cubic feet ofputting soil in the three flowerpots she wants to put the same amount of soil in each pot how many cub

frozen [14]

Answer:

$2\frac{2}{3}\text{ ft}^3\approx 2.67\text{ ft}^3$

Step-by-step explanation:

We have been given that Martha has 8 cubic feet of putting soil in the 3 flowerpots. She wants to put the same amount of soil in each pot.

To find the amount of soil in each pot, we need to divide total soil (8 cubic feet) by number of pots (3) as shown below:

$\text{Amount of soil in each pot}=\frac{8\text{ ft}^3}{3}$

$\text{Amount of soil in each pot}=2\frac{2}{3}\text{ ft}^3$

$\text{Amount of soil in each pot}=2.6666\text{ ft}^3$

$\text{Amount of soil in each pot}\approx 2.67\text{ ft}^3$

Therefore, Martha needs to put approximately 2.67 cubic feet of soil in each flower pot.

8 0

3 years ago

A. y= -4/5x+ 5/4 <br> B. y= -4/5x+ 3/2<br> C. y= -5/4x+ 3/2<br> D. y= -5/4x+ 5/4

Effectus [21]

The answer is C and here are the steps

7 0

3 years ago

Explain how you can find 4x754 using two different methods.

lesya692 [45]

You can multiply or you can estimate it!

Hope I could help

4 0

3 years ago

Read 2 more answers