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2 years ago

Answer 16 and 17 with work

Mathematics

1 answer:

Anvisha [2.4K]2 years ago

8 0

16a.) π $\frac{8}{15}$

16b.) $\frac{7}{15}$ = 7 ÷ 15

Put (7 ÷ 15) in your calculater to get 0.4666667

That multiplied by 100 and rounded to the nearest whole percent is

47%

17a.) 24 + 16 + 14 = 54

$\frac{16}{54} = \frac{8}{27}$

17b.) 8 ÷ 27 = 0.296

0.296 × 100 = 29.6

Rounded to the nearest whole number is 27%

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Square root of 5 + square root of 3 the whole divided by sqaure root of 5 - square root of 3

xxMikexx [17]

Answer:

The answer is 4 + √15 .

Step-by-step explanation:

You have to get rid of surds in the denorminator by multiplying it with the opposite sign :

$\frac{ \sqrt{5} + \sqrt{3} }{ \sqrt{5} - \sqrt{3} }$

$= \frac{ \sqrt{5} + \sqrt{3} }{ \sqrt{5} - \sqrt{3} } \times \frac{ \sqrt{5} + \sqrt{3} }{ \sqrt{5} + \sqrt{3} }$

$= \frac{ {( \sqrt{5} + \sqrt{3} ) }^{2} }{( \sqrt{5} - \sqrt{3} )( \sqrt{5} + \sqrt{3}) }$

$= \frac{ {( \sqrt{5} )}^{2} + 2( \sqrt{5} )( \sqrt{3}) + {( \sqrt{3}) }^{2} }{ {( \sqrt{5}) }^{2} - { (\sqrt{3} )}^{2} }$

$= \frac{5 + 2 \sqrt{15} + 3 }{5 - 3}$

$= \frac{8 + 2 \sqrt{15} }{2}$

$= 4 + \sqrt{15}$

3 0

2 years ago

1. A sum of money is shared among Jessica, Amanda, and Beverly in the ration 8:9:3

astra-53 [7]

Answer:

$200

Step-by-step explanation:

Amanda Beverly

9 : 3

difference between Amanda and Beverly = 9 - 3 = 6 portions.

∴ value of 6 portions = $60

value of 1 portion = $ 60 / 6

= $10

Total no. of portions = 8 + 9 + 3 = 20

Total sum of money to be shared = value of 1 portion x Total no. of portions

= $10 x 20

= <u>$200</u>

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2 years ago

Which expression is equivalent to 16a -18b + 20a

lisov135 [29]

B) (16 + 20)a - 18b

16a and 20a are both positive and 18b is the only negative it’s easier to add the positive with each other then the negative and a positive then add other positive

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3 years ago

Factor 1/3 out of 1/3x−50/3

wlad13 [49]

Answer:

50 1/3

Step-by-step explanation:

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3 years ago

Please help will vote brainliest

IgorLugansk [536]

Answer:

653.45 cm^2

Step-by-step explanation:

The volume of a cylinder can be found using:

v=pi r^2 h

We know the radius is 4, and the height is 13, so we can substitute them in

v=pi (4^2)(13)

v=pi (16)(13)

v=pi 208

v=653.451272

Rounded to the nearest hundredth

v=653.45

So the volume is 653.45 cm^3

8 0

2 years ago

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