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castortr0y [4]
3 years ago
11

They are 10 boys and 4 girls tanking dance lessons. Write the ratio that compare the numbers of boys taking dance lessons to the

total number to the students taking dance lessons
Mathematics
1 answer:
wlad13 [49]3 years ago
3 0

Answer:

5:7

Step-by-step explanation:

There are 10 boys and 4 girls taking dance lessons

Therefore, the total number of students taking dance lessons is;

10 + 4 = 14

Now, ratio of boys to the number of students taking dance lessons will be:

Number or boys taking dance lessons : Total number of students taking dance lessons

this will give;

10 : 14

= 10 / 14

dividing the numerator and denominator by 2 to reduce to the lowest term

5 / 7

or 5:7

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3. What is the radius of a circle whose area is 64π cm squared?
nataly862011 [7]

Answer:

Area = 64π

Area \: = \pi {r}^{2}Area=πr

2

64 \: \pi \: = \pi {r}^{2}64π=πr

2

{r}^{2} = \dfrac{64\pi}{\pi}r

2

=

π

64π

{r}^{2} = 64r

2

=64

r \: = \: \sqrt{64} = 8r=

64

=8

Radius = 8 units

Finding the Diameter -

Diameter = Radius x 2 = 8 x 2 = 16 .

\bold{Diameter \: is \: 16 \: units}Diameteris16units

8 0
2 years ago
A rectangle has a height of 4 and a width of 2x^2- 2.
Mekhanik [1.2K]

Answer:

  2

2 − 4

Step-by-step explanation:

4 0
2 years ago
This rectangle represents the base of a rectangular prism. The height of the rectangular prism is 56 m.
elena-14-01-66 [18.8K]

Answer:

1,960

Step-by-step explanation:

35 times 56 = 1,960

35 is the base, to get the base you do length times width.

the height is 56. To get the volume do base (or length times width) times hight.

Hope that helps!

5 0
2 years ago
Read 2 more answers
What is 9 copies of 3.65
Nataly_w [17]
I believe that you are doing multiplication with this.

So…    9 x 3.65 = 32.85

Hope this helps. :)
3 0
3 years ago
Without dividing or listing multiples how can you tell if 61 is a multiple of 6.
Ostrovityanka [42]
For a number to be a multiple of 6, it must be divisible by 6
and a number divisble by 6 means that it is divisble by 2 and 3

since the ones digit is odd it is not divisble by 2 which means 61 is not a multiple of 6
7 0
3 years ago
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