MATHEMATICS HIGH SCHOOL

PLEASE HELPA hot air balloon is at a height of h feet.
Which expressions represent a change in height of 5 ft?
Choose exactly two answers that are correct.
A. h/5
B. 5*h
C. h+5
D. h-5
I have more questions do if you are willing to help with more than this than let me know.

Answers

Answer 1
Answer: Since the balloon is at h height and has a change of 5 ft that means it could go up (+5) or down (-5) ft. So the answer would be c and D

h+5 and h-5

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You place three orders for 100 soccer balls which cost $22 per ball. You receive all 300 balls. There is a delivery charge of $20 per order. What is your average cost per ball including delivery charges?

Answers

Answer:

Average cost per ball: $22.2

Step-by-step explanation:

Cost per ball: $22

Cost of 300 balls: 300 × 22 = $6600

Total No. of Orders: 3

Delivery fee per order: $20

Total Delievery fee: 20 × 3 =$60

Total cost including delivery cost: $6600 + $60 = $6660


Average cost per ball = (Total cost)/(No. of balls)

Average cost per ball = (6660)/(300)

Average cost per ball = $22.2

You want to buy 4Ib of cortland apples and some gala apples. Each variety of apple costs $1.20 Ib. You can spend $7.20. How many pounds of gala apples can you buy?
Show your work.

Answers

If you have 4 lb of cortland apples and each costs $1.20 you multiply them and get $4.80 for the 4 lb, and because you can spend $7.20, you subtract the $4.80 of the cortland apples and you still have $2.40. Then you divide this by $1.20 that is the price of 1 lb of gala apples and you get 2 that is the number of lb of gala apples you can buy.
7.2 / 1.2 =6 so she can buy all she wanted

Help please !!!!!!!!!!!!!!!!!!!!!!!!!

Answers

9 use the calculator !
hello! the answer is going to be plus/minus 9. hope this helps!

A recipe calls for 3/4 cup of butter. Angie wants to triple the recipe, but she has only 1 5/8.How much butter must she borrow from a neighbor?

Answers

Let's start out by tripling the original recipe to see how much butter Angie needs.

(3)/(4) * 3 = total
(3* 3)/(4) = total
(9)/(4) = total
2 (1)/(4) = total

So we need 2 (1)/(4) cups of butter, but Angie only has 1 (5)/(8). Let's subtract what Angie has from the total to see how much more she needs.

2 (1)/(4) - 1(5)/(8) = n
(9)/(4) - (13)/(8) = n
we will need the least common denominator for both fractions
(2)/(2) *((9)/(4)) - (13)/(8) = n
(18)/(8) - (13)/(8) = n
(5)/(8) = n

So Angie need (5)/(8) cups more of butter for the recipe.

Find the area of the following circle.
ra 9 yd.
Area
square yards.

Answers

Well the formula for this problem is A=3.14(pi) * radius * radius 
So multiply 3.14 times 9 times 9. first multiply 9 with 9 you get 81 then you multiply 81 times 3.14 which equals 254.34. When you find the formula to this kinds of equations it's very easy all you have to do is plug in the numbers. Hope this helps :) 

Solve the equation sin^2x= 3 cos^2x. The value of x that satisfies the equation if x lies in the second quadrant is what degrees?

The value of x that satisfies the equation if x lies in the third quadrant is what degrees? ​

Answers

Step-by-step explanation:

sin^2(x)= 3 cos^2(x)

Subtract sin^2(x) on both sides

0=3cos^2(x)-sin^2(x)

By Pythagorean Identity sin^2(x)+cos^2(x)=1, we can replace cos^2(x) with 1-sin^2(x)

0=3(1-sin^2(x))-sin^2(x)

Distribute

0=3-3sin^2(x)-sin^2(x)

Combine like terms

0=3-4sin^2(x)

Add 4sin^2(x) on both sides

4sin^2(x)=3

Divide both sides by 4

sin^2(x)=3/4

Take the square root of both sides

sin(x)=+ or - sqrt(3/4)

sin(x)=+ or - sqrt(3)/sqrt(4)

sin(x)=+ or - sqrt(3)/2

This happens on the unit circle at

60 degrees

120 degrees

240 degrees

300 degrees

If we go around and around again forwards or backwards, we get the infinitely many other solutions including the one's already stated in the following solution sets

(60 +360n) degrees

(120 +360n)degrees

(240 +360n)degrees

(300 +360n)degrees

where n is an integer

x is 120 degrees or (120+360n) degrees in the second quadrant. I didn't know if you were just looking for solutions in the first nonnegative cycle of the unit circle or not.

240 degree one or the (240+360n) degrees terminates in the third.
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