MATHEMATICS HIGH SCHOOL

Calculate cos theta to two decimal places

Answers

Answer 1

Answer:

Answer:

B. 0.72

Step-by-step explanation:

In order to find the answer we need to use the following formula:

$a^2=b^2+c^2-2bc*cos(\theta)$ where:

a, b, c are the length of the sides and $\theta$ the angle, so:

$7^2=10^2+8^2-(2*10*8)*cos(\theta)$

$49=164-(160)*cos(\theta)$

$cos(\theta)=0.71875$

In conclusion, $cos(\theta)=0.72$ , so the answer is B.

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GEOMETRY HELP PLEASE, ITS URGENT

What should be done to both sides of the equation in order to solve N/4 = -12.4

Answers

Mutiply each by four to get n=-49.6. Hope this helped.

Answer:

Multiply by 4.

Step-by-step explanation:

GWhat number can be used to complete the volume staternent for the concr A cone with herght 4 meters and diarreer 3 meters. Vohurre-Pimeters cuted
What number can be used to complete the volume statement for the cone? A cone with height 4 meters and diameter 3 meters. Volume = Pimeters cubed

Answers

The formula for volume of a cone is PI x r^2 x h/3

Using the information given:

Volume = PI x 1.5^2 x 4/3

Volume = PI x 2.25 x 4/3

Volume = 3PI meters cubed.

Answer: 3pi

Step-by-step explanation:

The equation for this problem is 1/3 Bh

So, its 1/3 x 4 x 1.5(1.5) x pi

What is nine more than a number y, if that number is 4?
13
9
4
7

Answers

Answer:

$\huge\boxed{13}$

Step-by-step explanation:

The unknown number is y

Given condition is:

=> y + 9

Given that y = 4

=> 4 + 9

=> 13

$\rule [225]{225}{2}$

Hope this helped!

~AnonymousHelper1807

Write an equation or inequality that models the situation below: April started a workout program at a local health club. She began with a 45 minute workout and has increased her time by 5 minutes per week. How many weeks should she increase her time, if she wants her work out to be no more than one hour?

Answers

Answer:

45+5x $\leq$ 60

Step-by-step explanation:

Suppose an investment of $2,300 doubles in value every decade. The function gives the value of the investment after x decades. f(x)=2300*2^x How much is the investment worth after 2 decades?a.$2,355,200
b. $92,000
c. $46,000
d. $9,200

Answers

f ( x ) = 2,300 * 2^x
After 2 decades: x = 2.
f ( 2 ) = 2,300 * 2 ^2 = 2,300 * 4 = 9,200
Answer:
D ) $9,200

Answer:

1. no

2. 2,684,354,560 crickets

3. $9,200

4. b

5. 7.5

6.b

Julie has 1,429 reward points from shopping at an online store. She uses the points to buy gift cards for free cups of coffee. Each card costs 150 points.What is the greatest number of gift cards Julie can buy?
How many reward points will she have left?

Answers

Answer:

Julie can buy 9 gift cards and will have 79 reward points left over

Step-by-step explanation:

If you divide 1,429 by 150, the number before the decimal, 9, is how many she can buy without exceeding her limit

Then, multiply 9 and 150 to see how many points 9 gift cards is worth (1350)

Subtract 1429-1350 to find the leftover points (79)

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