Please help with ratio, proportion and percent questions part 1

Answers

Answer 1

Answer: 1. Simplify $(8)/(32)$ by divide both numbers by 4 and you'll get the answer as C. C is correct
2. Unit rate is expression that has quantity of 1, numerator are often dollars or units like miles, km, meters... and denominator often pounds, kg, gram, liters ... So C is correct answer for your question:)
3. To find total money in the bag, 14 + 6 = 20 coins, there are 6 nickels so the expression is $(6)/(20)$ or $(3)/(10)$ in lowest terms.
4. Multiply diagnally 12 × 6 = 72, 72÷ 9 = 8, so the answer is A.
5. Divide 96 to 8 to get cost of 1 ticket, $12 , then multiply it by 3, so the answer is B. $36
Hoped I helped:) GOOD LUCK

Answer 2

Answer: 1. 8/32
divide numerator and denominator by 8
answer is 1/4
answer is C

2. 1 week/7 days
answer is A

3. total coins is 20
6/20= 3/10 are nickels

4. 6/x=9/12
cross multiply
9x= 72
x=8
Answer is A

5. 96/8=12
each ticket cost $12
3 tickets will be $36
Answer is B

Hope this helps

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Two spherical balloons are filled with water. The first balloon has a radius of 3 cm, and the second has a radius of 6 cm.How much more water is in the larger balloon than in the smaller balloon?
Use 3.14 to approximate pi, and express your answer in the hundredths.

cm3

Answers

You use the volume formula for a sphere, or V=4/3*pi*r³;
so the first balloon (3cm) has a volume of 113.1.
The second balloon (6cm) has a volume of 904.78.
Therefore, you do 904.78-113.1, getting 791.68 cm³

The answer is: 791.28

~~~15 POINTS~~~
Please help me with these two questions.

Answers

This is what I think:
The first one, you take (x,y) both times 3
A(1,1) to A(3,3)
B(-1,1) to B(-3,3)
C(1,-1) to C(3,-3)
D(-1,-1) to D(-3,-3)

The second one, you take (x,y) both times 2
A(4,1) to A(8,2)
B(4,3) to B(8,6)
C(1,2) to C(2,4)

That is how I think you do it. I hope that I helped you.

17)
Find the length of the side of the smaller square. So subtract the x-values from each other.
1-(-1)=2
The length of the square is 2.

Now find the length of the bigger square.
3-(-3)=6 (You can also just count the units between the two points.)

Now divide the length of the bigger triangle by the length of the smaller triangle to find the scale factor used to dilate the object.

$(6)/(2)={\boxed{3}$

The scale factor is 3.

18)
Find the base of the larger triangle.
The y-value for point B is 6 and the y-value for point A is 2. Just subtract to find the length of BA.
6-2=4

Now find the base of the smaller triangle.
The y-value for point B is 3 and the y-value for point A is 1. Just subtract to find the length of B'A'.
3-1=2

Divide the base of the smaller triangle by that of the larger triangle.

$(2)/(4)={\boxed{(1)/(2)}$

The scale factor is 1/2.
_____________________________________________________

Now you might be wondering why I divided the smaller triangle by the larger one but I didn't follow the same procedure for the squares. If you look closely, the smaller triangle is the new figure after the scale factor dilation while the larger square is the new figure after the scale factor dilation. Just look at the coordinates. The coordinates for a changed figure always has an apostrophe at the end of it. The bigger square in question 17 has the apostrophes so I knew that the larger square was the new figure after the dilation. And the smaller triangle in question 18 has the apostrophes so I knew that the smaller triangle was the new figure after the dilation.

What is 2.16 repeat rewrite as a fraction

Answers

2.16 repeat as a fraction is:

x = 2.16666666
10x = 21.6666666
100x = 216.666666
100x - 10x = 216.666666 (repeat) - 21.6666666 (repeat) = 195
90x = 195
x = 195 / 90
x = (195/3) / (90/3)
x = 65 / 30
x = (65/5) / (30/5)
x = 13 / 6

x = 13/6

Chad drove 168 miles in 3 hours. How many miles per hour did Chad drive?

Answers

°° Let's see -

Basically, you divide the number of miles Chad drove by the number of hours it took. Then, it gives you the number of miles Chad drove in one hour. Let's try it!

168 ÷ 3 = 56

You can now see that Chad drove 56 miles in one hour.

↑ ↑ ↑ Hope this helps! :D

Take the 168miles divided by the 3 hours (168/3) to get 56. Chad drove 56 miles

A positive integer is 28 more than 3 times another. Their product is 580. Find the two integers

Answers

10 and 58

10*58=580

10*3+28=58

If the x value is reapeted in a set of x values, is it a function?when finding a function do you loko at x values or y values?

Answers

❅☃ If the x value is repeated it is considered a non-function.
So if we had x values of:
2
3
6
it is a function
but if we had
3
6
6
it is a non function because the 6 was repeated
❅☃ Yes, you have to look at the x values, if you do not look at the x values, then you cant determine the functions.

yes it is still a function it just wont be linear