3 years ago

25 students in a high school health class are asked to write down what foods they ate last week. Of the 25

Mathematics

1 answer:

kondor19780726 [428]3 years ago

5 0

Answer:

14/25, 6/25, 1/5, 3/5

Step-by-step explanation:

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X+4+3x=72<br> x+4+3x=72<br><br> .

Aneli [31]

Answer:

yes it does equal 72

Step-by-step explanation:

4 0

2 years ago

The price of a watch was increased by 20% to £162. What was the price before the increase?

vfiekz [6]

Answer:

= £135

Step-by-step explanation:

Original price = 100%

Percentage increase = 20%

New price = 100% + 20% = 120%

If 120% = £162

What about 100% = ?

= (100 x 162) ÷ 120

= 16200 ÷ 120

= £135

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3 years ago

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Elton is a candle maker. Each 15 cm long candle he makes burns evenly for 6 hours if Elton makes a 45 cm long candle, how long w

tatuchka [14]

The candle would burn for 18 hours.

45 / 15 = 3

If the candle is three times longer than normal, it will burn three times longer than normal.

3 x 6 = 18

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3 years ago

The tread life of a particular brand of tire is a random variable best described by a normal distribution with a mean of 60,000

valina [46]

Answer: 61,750 miles

Step-by-step explanation:

Given : The p-value of the tires to outlast the warranty = 0.96

The probability that corresponds to 0.96 from a Normal distribution table is 1.75.

Mean : $\mu=60,000\text{ miles}$

Standard deviation : $\sigma=1000\text{ miles}$

The formula for z-score is given by : -

$z=\dfrac{x-\mu}{\sigma}\\\\\Rightarrow\ 1.75=\dfrac{x-60000}{1000}\\\\\Rightarrow\ x-60000=1750\\\\\Rightarrow\ x=61750$

Hence, the tread life of tire should be 61,750 miles if they want 96% of the tires to outlast the warranty.

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3 years ago

Can u answer this??!!

Lelu [443]

1/2 gallon of milk makes 10 glasses.
$\frac{1}{2}$ x $\frac{1}{10}$ = $\frac{1}{20}$

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3 years ago

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