All categories

2 years ago

Hello, HELP!!!!!!!!!!!!!!!! PLS PLS PLS

Mathematics

2 answers:

Mnenie [13.5K]2 years ago

8 0

Answer:

The answer would be B.

Step-by-step explanation:

1:?

4:12

?:27

If 4:12 is a ratio of 1:3 then we can assume that the other unknown numbers also use this same ratio. So the ratio for 1:? would be 1:3 and the ratio for ?:27 would be 9:27 bringing you back to the original ratio of 1:3

Anna35 [415]2 years ago

6 0

Answer:

i think its b 3 ppl 9 cups

You might be interested in

Reagan used 1,221 sq ft of wrapping paper to wrap gifts for everyone in her class. If each gift used the same amount of wrapping

ipn [44]

She used 1221 wrapping paper for 21 gifts, so to find the individual amount, you would do:
1221/21
She used about 58.143 ft² of wrapping paper for each gift.

8 0

2 years ago

Read 2 more answers

what is one and one half divided by one and one sixth and what is three fourths divided by one and three eights (brainliest will

butalik [34]

1 1/2 divided by 1 1/6 equals 1.28571429
Rounded: 1.28, 1.29, or 1.30 (depends on what they ask for)

3/4 divided by 1 3/8 equals 0.54545455
Rounded: 0.54 or 0.55

6 0

3 years ago

What is the formula for midpoint?

kiruha [24]

Answer:

(x1 + x2 ÷ 2), (y1 + y2 ÷ 2)

4 0

2 years ago

77. the volume of a cube is increasing at a rate of <img src="https://tex.z-dn.net/?f=10%20%5Cmathrm%7B~cm%7D%5E%7B3%7D%20%2F%20

Colt1911 [192]

Answer:

$\displaystyle \frac{4}{3}\text{cm}^2/\text{min}$

Step-by-step explanation:

Given

$\displaystyle \frac{dV}{dt}=10\:\text{cm}^3/\text{min}\\ \\V=s^3\\\\SA=6s^2\\\\\frac{d(SA)}{dt}=?}\:;s=30\text{cm}$

Solution

(1) Find the rate of the cube's edge length with respect to time at s=30:

$\displaystyle V=s^3\\\\\frac{dV}{dt}=3s^2\frac{ds}{dt}\\ \\10=3(30)^2\frac{ds}{dt}\\ \\10=3(900)\frac{ds}{dt}\\\\10=2700\frac{ds}{dt}\\\\\frac{10}{2700}=\frac{ds}{dt}\\\\\frac{ds}{dt}=\frac{1}{270}\text{cm}/\text{min}$

(2) Find the rate of the cube's surface area with respect to time at s=30:

$\displaystyle SA=6s^2\\\\\frac{d(SA)}{dt}=12s\frac{ds}{dt}\\ \\\frac{d(SA)}{dt}=12(30)\biggr(\frac{1}{270}\biggr)\\\\\frac{d(SA)}{dt}=\frac{360}{270}\biggr\\\\\frac{d(SA)}{dt}=\frac{4}{3}\text{cm}^2/\text{min}$

Therefore, the surface area increases when the length of an edge is 30 cm at a rate of $\displaystyle \frac{4}{3}\text{cm}^2/\text{min}$ .

6 0

1 year ago

Today is Ravenclaw Pride Day. If the probability of you getting sorted into Ravenclaw is 1/4, what is the probability of not get

andreyandreev [35.5K]

Answer:

Step-by-step explanation:

1 - ¼ = ¾

5 0

3 years ago

Read 2 more answers