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Snowcat [4.5K]
3 years ago
12

Help me plz 5 question and i got 15 mins to get done

Mathematics
1 answer:
Setler79 [48]3 years ago
8 0
1/6

7

5

2.5, 2.5, 2.75

10 2/3

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Kelly wants to buy a magazine that is $25. Later the magazine was marked up an additional 20%. What is the new price
oksian1 [2.3K]

$30 because 25/20 =5 which means for every 20% percent 5 will be added


5 0
3 years ago
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
What is the approximate radius of a sphere with a volume of 900 cm^3?
almond37 [142]

Answer:

A. 6 cm

Step-by-step explanation:

A P E X

4 0
3 years ago
Read 2 more answers
Show Work.
vivado [14]

If we manipulate the equation and make k the subject we get 1.2 which is the answer.

If we manipulate the equation and make t the subject we get 0.56 which is the answer.

If we manipulate the equation and make z the subject we get 63.36 which is the answer.

If we manipulate the equation and make x the subject we get 1.2 which is the answer.

If we manipulate the equation and make x the subject we get -0.831 which is the answer.

If we manipulate the equation and make x the subject we get 0.706 which is the answer.

5 0
4 years ago
How many solutions does the following absolute value equation have? |x+3|=4
bekas [8.4K]
It has two solutions.
The first solution is x = -7
The second solution is x = 1

Hope this helps!
3 0
4 years ago
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