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3 years ago

An item is regularly priced at $15. Josh bought it at a discount of 25% off the regular price.

Mathematics

1 answer:

Radda [10]3 years ago

7 0

It’s is $11 I think so don’t get me working

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Christopher buys 120 hot dog buns for a picnic. He buys two different brands of hot dog buns. Brand X has 12 hot dog buns in a p

Mariana [72]

Brand X cost: $4.50
Brand Y cost: $3.50

Christopher spends total: $49.50

Equation: 4.50x + 3.50y = 49.50

Idk how to solve the equation but this should be the correct equation

4 0

3 years ago

Nina ran 12 4/5 laps in 1/4 of an hour . At this rate , how many laps could she run in a hour ?

slega [8]

$\text{ Answer: There are }51 \frac{1}{5}\ laps.$

Explanation:

Since we have given that

Number of laps Nina ran is given by

$12\frac{4}{5}$

Time taken by Nina to ran the lap is given by

$\frac{1}{4}$

Now, we use the unitary method ,

$In\ \frac{1}{4}\ hour,\text{ Nina ran }12\frac{4}{5}=\frac{64}{5}\ laps\\\\In\ 1\ hour,\text{ Nina ran }\frac{\frac{64}{5}}{\frac{1}{4}}=\frac{256}{5}\ laps$

Now, we change it into mixed fraction,

$\frac{256}{5}=51\frac{1}{5}\ laps$

Hence,

$\text{ there are }51 \frac{1}{5}\ laps.$

8 0

3 years ago

Please Help ASAP!! Will mark brainliest! Please Help, I know its a lot but please help!

slavikrds [6]

Answer:

1st: 0.04, 0.04, 0.25, 0.4

2nd: 0.06, 0.16, 0.6, 60

3rd: 0.07, 0.7, 0.075, 0.75, 7.5

4th: 0.02, 0.18, 0.2, 200

5th: 0.009, 0.09, 0.9, 0.95

6th, 0.1, 0.12, 1, 10

Step-by-step explanation:

6 0

3 years ago

Make r the subject of the formula <br>v = \pi \: h {}^{2}(r - \frac{h}{3})v=πh2(r−3h) <br>

mel-nik [20]

Answer:

$\boxed{r = \frac{h}{3} + \frac{v}{\pi {h}^{2} } }$

Step-by-step explanation:

$Solve \: for \: r: \\ = > v= \pi {h}^{2}(r - \frac{h}{3} ) \\ \\ v=\pi {h}^{2}(r - \frac{h}{3} )is \: equivalent \: to \: {h}^{2}\pi(r - \frac{h}{3} ) = v: \\ = > {h}^{2}\pi(r - \frac{h}{3} ) = v \\ \\ Divide \: both \: sides \: by \: \pi {h}^{2} : \\ = > r - \frac{h}{3} = \frac{v}{\pi {h}^{2} } \\ \\ Add \: \frac{h}{3} \: to \: both \: sides: \\ = > r = \frac{h}{3} + \frac{v}{\pi {h}^{2} }$

7 0

3 years ago

What is 12/20 and 10/50 and 8/10 as a equivalent fraction out of 100 pls help

wariber [46]

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5 0

3 years ago