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3 years ago

What's the answer to this?: divide 33 photos into two groups so the ratio is 4 to 7

Mathematics

2 answers:

velikii [3]3 years ago

5 0

total units of ration = 4 +7=11

so, ratio would be (4*33)/11 : (7*33)/11

12 : 21 is the answer.

Did you understand?

Alex17521 [72]3 years ago

4 0

21 would be the answer do the math

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Pavlova-9 [17]

Answer:

30°

Step-by-step explanation:

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2 years ago

1 8/9 - 1 y/3 = -4/9 <br><br>Solve for y.

Artist 52 [7]

Answer:

y = 7

Step-by-step explanation:

Firstly multiply each and every term by 9

17/9 - y/3 = -4/9

; 17 - 3y = -4...then move the variabkes without (y) to one side,

; 21 = 3y....then divide both sides by 3

; 7 = y

;Hence..., y = 7

3 0

3 years ago

Sandra sells necklaces at a school craft fair. She uses the equation P= 7.5n - (2.25n + 15) to determine her total profit at th

gregori [183]

The way you find profit is to subtract the revenue and the cost
Profit = Revenue - Cost
The revenue is the amount of money coming in, the cost is the amount of money going out. The goal of course is to have the revenue larger than the cost so that the profit is positive.

So the equation given is
P = 7.5n - (2.25n+15)
and its in the form
P = R - C
where...
R = 7.5n is the revenue equation
C = 2.25n+15 is the cost equation

Focus on the revenue equation
R = 7.5n
which is the same as
R = 7.50*n

This tells us that Sandra pulls in a total of 7.50*n dollars where n is some positive whole number. It represents the number of necklaces sold. For example, if she sold n = 10 necklaces, then
R = 7.50*n
R = 7.50*10
R = 750
meaning that Sandra has made $750 in revenue

As you can see above, the revenue is computed by multiplying the price per necklace ($7.50) by the number of necklaces sold (n) to get R = 7.50*n

So that's why the answer is $7.50

Note: The 2.25 is part of the cost equation. This is known as the variable cost. It is the cost to make one necklace ignoring the fixed cost (eg: rent). The variable cost often doesn't stay the same, but algebra textbooks often simplify this aspect.

8 0

3 years ago

In a spelling bee, Anish's placement is both the 11th highest and the 25th lowest among all the spellers who participated. How m

Vlad [161]

Answer: There are 35 spellers participated in the spelling bee.

Step-by-step explanation:

Since we have given that

Rank of Anish's placement at the highest = 11 th

Rank of Anish's placement at the lowest = 25 th

We need to find the number of spellers participated in the spelling bee.

So, Number of spellers participated in the spelling bee is given by

Highest + Lowest - 1

= 11 + 25 - 1

= 36 - 1

= 35

Hence, there are 35 spellers participated in the spelling bee.

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2 years ago

Find the volume of a cylinder with a radius of 5 cm and a height of 10 cm. Then, find the volume of the cylinder if the radius i

kap26 [50]

Answer:

250π

1000π

Step-by-step explanation:

(refer to attached)

volume of cylinder is given by:

V = π r²h,

where r = radius of base and h = height of cylinder

Given r = 5 and h = 10, hence

V = π r²h

V = π (5)²(10)

V = π (25) (10)

V = 250π (answer)

For the second case, r = 10 cm

V = π r²h

V = π (10)²(10)

V = π (100) (10)

V = 1000π (answer)

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3 years ago

Read 2 more answers