3 years ago

I need to know how to solve them

Mathematics

1 answer:

sesenic [268]3 years ago

8 0

Answer:

ture ture false

ghkffdxvjllhgdfh

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Hannah can paint a room in 20 hours. Destiny can paint the same room in 16 hours. How long does it take for both Hannah and Dest

UNO [17]

Amount of room hannah can paint in an hour = 1/20
amount of room destiny can paint in an hour = 1/16
number of hours = x

1/20x + 1/16x = 1
the reason why this formula is true is, the amount of the room painted in the end should be 1 (the whole room)

4/80x + 5/80x = 1
9/80x = 1
9x = 80
x = 80/9 hours
x = 8.89 hours

8 0

3 years ago

A pyramid is placed inside a prism as shown. The pyramid has the same base area, B, as the prism but half the height, h, of the

gayaneshka [121]

Answer: D) V= 1/6 bh

Step-by-step explanation:

Since according to the given question, A pyramid is placed inside a prism.

And, The pyramid has the same base area, b, as the prism but half the height, h, of the prism.

Therefore, base area of the pyramid = b

Height of the pyramid = h/2

Since, The volume of the pyramid,

V = 1/3 × base ares × height

V= 1/3 × b × h/2

V= 1/6 bh

Thus the required volume = 1/6 bh cube unit.

Therefore Option D is correct.

7 0

3 years ago

ive males with an X-linked genetic disorder have one child each. The random variable x is the number of children among the five

Nonamiya [84]

Answer:

a c d

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3 years ago

The population of a town doubled every 5 years from 1960 to 1975. What is the percentage increase in population in this period ?

777dan777 [17]

Answer:

Step-by-step explanation:

Let p represent the population

in 1965 → the population becomes 2p

in 1970 → the population becomes 2(2p) = 4p

in 1975 → the population becomes 2(4p) = 8p

p ——————> 100%

8p ————-—-> x%

then

$x=\frac{8p*100}{p}=800$

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3 years ago

Find the equation of the line specified.

OLga [1]

The point slope form of a straight line is y-y1 = m(x-x1)

y -(-3) = -7(x-5)

y + 3 = -7(x-5)

y = -7x + 35 - 3

y = -7x + 32

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3 years ago