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DedPeter [7]
2 years ago
5

Please answer show all your work or tell me the steps

Mathematics
2 answers:
Phoenix [80]2 years ago
8 0

Answer: for the first one it is 22 percent

Step-by-step explanation: first I found out that 14.08 is In-between 64 and 78.08 . Then I devided 14.08 by 64 so I got 0.22 then i made that a percentage by multiplying it by 10. So the answer is 22 percent. Please mark me brainiest.

I did it on the other one but here is the full explanation

Harrizon [31]2 years ago
8 0
The second one is $25 because 23.36 times 7% equals 1.36 then add 23.36 and 1.36 and you get $25
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Calculate the volume of water in the cup when it is full
maxonik [38]

To find:

The volume of the water in the cup when it is full.

Solution:

The volume of the water is equal to the difference of the volume of the small cone and the larger cone.

Here, the ratio of the radius of both cones is equal to the ratio of their heights. SO,

\begin{gathered} \frac{r}{2.7}=\frac{20}{20-8} \\ \frac{r}{2.7}=\frac{20}{12} \\ \frac{r}{2.7}=\frac{5}{3} \\ r=4.5 \end{gathered}

The radius of the larger cone is 4.5 cm.

So, the volume of the water is:

\begin{gathered} V=\frac{1}{3}\pi R^2H-\frac{1}{3}\pi r^2h \\ =\frac{1}{3}\pi(R^2H-r^2h) \\ =\frac{1}{3}\pi((4.5)^2(20)-(2.7)^2(12)) \\ =\frac{1}{3}\cdot\frac{22}{7}(405-87.48) \\ =\frac{22}{21}(317.52) \\ =332.64cm^2 \end{gathered}

The volume of water when the cup is full is 332.64 cm^2.

7 0
1 year ago
Solve the system of equations by finding the reduced row-echelon form of the augmented matrix for the system of equations.
Hitman42 [59]

Answer:

b is the anwser

Step-by-step explanation:

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3 0
2 years ago
To the nearest hundredth, what is the sine of the acute angle formed by the line whose equation is y = 3x - 3 and the positive x
Serhud [2]

Answer:

The sine of the acute angle is 0.95

Step-by-step explanation:

using a graphing tool

see the attached figure

Let

A-----> the acute angle formed by the given line and the positive x-axis

In the right triangle XYZ

we know that

sin(A)=\frac{xy}{xz}

we have

xy=3\ units

yz=1\ units

Applying the Pythagoras Theorem find the value of xz

xz^{2}=3^{2}+1^{2}\\ \\xz^{2}=10\\ \\xz=\sqrt{10}\ units

substitute

sin(A)=\frac{3}{\sqrt{10}}=0.95

5 0
3 years ago
What is the volume of this cube? Enter you answer as a decimal in the box.
Katyanochek1 [597]
Solution: V=a^3=3=0.5^3=0.125 
so your answer is 0.13, hope this helps!
5 0
3 years ago
- 18 = -3x + 6<br> Plz help
exis [7]

Answer:

8 =x

Step-by-step explanation:

- 18 = -3x + 6

Subtract 6 from each side

-18-6 = -3x+6-6

-24 = -3x

Divide each side by -3

-24/-3 = -3x/-3

8 =x

8 0
2 years ago
Read 2 more answers
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