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fiasKO [112]
3 years ago
5

The value of y varies jointly with the values of x and z When x = 4 and z = 10, the value of y is 360.

Mathematics
1 answer:
Igoryamba3 years ago
3 0

Answer:

A

Step-by-step explanation:

Joint variation is given by:

y=kxz

Where k is some constant.

We are given that y = 360 when x = 4 and z = 10. Therefore:

360=k(4)(10)

Solving for k:

40k=360\Rightarrow k=9

Therefore, our equation is:

y=9xz

Then when x = 5 and z = 12:

y=9(5)(12)=540

The answer is A.

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A candle costing $0.67 and selling for $0.98 find the markup
Yuki888 [10]

Answer:

Mark up =0.46=46%.

Step-by-step explanation:

Mark up is the extra amount charged to a customer.

The formula to calculate Mark up is

Mark up =\frac{Price - cost}{cost}

It is given cost price of candle =$0.67 and selling price =$0.98.

Mark up =\frac{0.98-0.67}{0.67} =0.46.

0.46 when converted to percent is 0.46x100= 46%.

Mark upas a percent is  46%.


5 0
3 years ago
Read 2 more answers
The volume of gas in a container at a constant temperature varies inversely as the pressure. If the volume is 32 cubic centimete
aleksklad [387]

Step-by-step explanation:

Given that,

The volume of gas in a container at a constant temperature varies inversely as the pressure.

V_1=32\ cm^3\\\\P_1=8\ \text{pounds}\\\\V_2=60\ cm^3

We need to find pressure P_2.

According to question,

\dfrac{V_1}{V_2}=\dfrac{P_2}{P_1}

Putting all the values

P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{8\times 32}{60}\\\\P_2=4.26\ \text{pounds}  

So, the pressure is 4.26 pounds.

7 0
3 years ago
Determine the slope and y intercept. Y=3/2x+3
Harlamova29_29 [7]

Slope: 3/2 (the coefficient of x)

Y-Intercept: (0,3) (substituting x = 0 into the equation)

Ans: Yellow

7 0
3 years ago
Sarah received $55 for her birthday. She used some of that money to buy 3 shirts priced at m dollars each.
Marat540 [252]

Answer:

55- 3m is the awnser for this question

4 0
3 years ago
What is 9x-5-8+x= what
Elanso [62]
Hi there!

First you simplify.

Simplified = 9x+(−5)+(−8)+x

Then you combine the like terms.

<span><span><span><span><span>9x</span>+(<span>−5)</span></span>+(<span>−8)</span></span>+x (*-5 and -8 are like terms) (9x and x are like terms)

</span></span><span><span><span>Combined it's~ (<span><span>9x</span>+x</span>)</span>+<span>(<span><span>−5</span>+<span>−8</span></span>)

</span></span></span><span><span><span>Solve and that comes to 10x</span>+<span>−<span>13 which is your answer. :)

Hope this helps. 

</span></span></span></span>
3 0
3 years ago
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