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3 years ago

Factor the following Binomials 3x+3y 2x-4 6x^2-9x 15a^2b+5ab 12x^2y-4xy

Mathematics

1 answer:

slava [35]3 years ago

7 0

Answer:

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Step-by-step explanation:

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When it is born a kitten weighs 110g when it is two months old it weighs 550g calculate the percentage increase in its mass

torisob [31]

Given:

Initial weight of kitten = 110g

Present weight of kitten = 550g

To find:

The percentage increase in its mass.

Solution:

To get the percentage increase in its mass, we need to find the percentage increase in its weight.

$\%Increase=\dfrac{\text{Present value - Initial value}}{\text{Initial value}}\times 100$

$\%Increase=\dfrac{550-110}{110}\times 100$

$\%Increase=\dfrac{440}{110}\times 100$

$\%Increase=4\times 100$

$\%Increase=400$

Therefore, the percentage increase in kitten's mass is 400%.

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3 years ago

Find the ratio a:b- 1) 2a=9b 2) a+b=3b please explain your work

Alex777 [14]

1) 2a = 9b ⇒ 2:9

2) a + b = 3b ⇒ a = 2b ⇒ 1:2

Answers: 2:9 and 1:2

6 0

3 years ago

A circular oil slick is expanding at a rate of 3m/min. How fast is the area of the oil slick changing when the diameter is 48 me

olga55 [171]

Answer:

$48\pi \:m/min$

Step-by-step explanation:

Diameter = 48 m

Therefore radius r = 48/2 = 24 m

$Area \: of \: circular \: oil \: slick \\ A = \pi {r}^{2} \\ differentiating \: w \: r \: to \: t \: on \: \\ both \: sides \\ \\ \frac{dA}{dt} = \frac{d}{dt} (\pi {r}^{2} )\\ \\ \frac{dA}{dt} =\pi \frac{d}{dt} {r}^{2} \\ \\ \frac{dA}{dt} =\pi \times 2{r}\\ \\ \frac{dA}{dt} =2\pi {r} \\ \\ \bigg(\frac{dA}{dt} \bigg)_{r=24} =2\pi \times {24} \\ \\ \bigg(\frac{dA}{dt} \bigg)_{r=24} =48\pi \: m \: per \: min$

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3 years ago

Are all triangles prisms or pyramids

Umnica [9.8K]

Answer:

No not all of them.

Step-by-step explanation:

Triangles can be 2d meaning like a flat triangle.

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3 years ago

3/5 of a group of children were girls. If there were 24 girls, how many children were there in the group

VLD [36.1K]

3/5 of the group = 24

1/5 of the group = 8

The group = 5 x 8 = 40 .

7 0

3 years ago