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3 years ago

Can somebody help me please i’ll make your brainliest but you have to explain

Mathematics

2 answers:

Orlov [11]3 years ago

6 0

Answer:

$180

Step-by-step explanation:

If Fiona earned 15% commision on what <em>she</em> sold, that means that we have to make a proportion to see how much she made.

15/100=x/1200

This is because 15/100 is the same as 15%. An easier way of doing this is just multiplying 0.15x1200 because that's basically how much she earned.

But, if we solve the proportion 15/100=x/1200, we get:

100x=18,000

Now, we divide each side by 100 to find <em>x</em>. Thus,

100x/100=18,000/100.

And,

x=180.

vesna_86 [32]3 years ago

4 0

Answer

first one

Step-by-step explanation:

Divide the numbers than Multiply all terms by the same value to eliminate fraction denominators than i got the first one

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Luis purchased a computer that was advertised as 2/5 off. The original price was $800. What is the amount that he paid?

juin [17]

Answer:

Step-by-step explanation:

<u>You divide $800 by 5 and get $160. Then multiply $160 by 2 and get $320. Then subtract $320 from $800 and get $480.</u>

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3 years ago

Need step by step explanation please.

ryzh [129]

1. Volume of 1 tennis ball = volume of sphere = 33.51 in.³

2. Volume of the cylinder = 150.8 in.³

3. Amount of space not occupied by the tennis ball = Volume of cylinder - 3(volume 1 tennis ball) = 50.27 in.³

<h3>What is the Volume of a Cylinder and Volume of a Sphere?</h3>

Volume of Cylinder = πr²h
Volume of Sphere = 4/3πr³

Diameter of the tennis ball = 4 in. (given)

1. Volume of 1 tennis ball = volume of sphere = 4/3πr³

r = 1/2(4 in.) = 2 in.

Volume of 1 tennis ball = 4/3π(2)³ = 33.51 in.³

2. Volume of the cylinder = πr²h

Radius of the cylinder (r) = 1/2(4 in.) = 2 in

Height of the cylinder (h) = 3(4 in.) = 12 in

Volume of the cylinder = πr²h = π(2²)(12) = 150.8 in.³

3. Amount of space not occupied by the tennis ball = Volume of cylinder - 3(volume 1 tennis ball)

= 150.8 - 3(33.51) = 50.27 in.³

Learn more about volume of a cylinder and a sphere on:

brainly.com/question/64165

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2 years ago

Wil paid $35 for 5 T-shirts. Some of the T-shirts cost $5 each and the rest coast $10 each. Write and solve a system of equation

lawyer [7]

X is shirt type 1, y is shirt type 2

x+y=5
<span>
5x+10y=35

</span>Use elimination.
solve for y
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3 years ago

What is the value of x to the nearest tenth? A: 0.1 B: 12.3 C: 8.1

Elza [17]

C I think is the correct answer

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4 years ago

Read 2 more answers

Please explain your answer and show your work

MissTica

9514 1404 393

Answer:

A. 6b³

B. 6b +6

C. p = 0.0375(6b³ +b +1)

D. $115.54

Step-by-step explanation:

<u>Given</u>:

3 candles with dimensions b×b×b, b×b×2b, and b×b×3b

with wicks of lengths b+2, 2b+2, 3b+2

wick costs $0.005/cm; wax costs $0.03/cm³

selling price is material cost + 25%

<u>Find</u>:

A. an expression for total volume

B. an expression for total wick length

C. an expression for the purchase price of a set

D. purchase price for a set with base area 64 cm²

<u>Solution</u>:

A. The sum of the volumes of the three candles is ...

v = b³ +2b³ +3b³

v = 6b³

B. The sum of the wick lengths is ...

L = (b +2) +(2b +2) +(3b +2)

L = 6b +6

C. The selling price is 25% more than the cost of materials so is ...

p = (1.25)(0.03×6b³ +0.005×(6b +6)) = 0.225b³ +.0375b +.0375

p = 0.0375(6b³ +b +1)

D. The side of the base is the square root of the base area, so is ...

b = √(64 cm²) = 8 cm

Then the price of a set of candles is ...

p = 0.0375(6·8³ +8 +1) = 0.0375·3081 = 115.54

Purchase price for a candle set with a base area of 64 cm² is $115.54.

4 0

3 years ago