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3 years ago

John purchased 1/4 lbs of hamburger for $0.75. How much did the hamburger cost per pound?

Mathematics

1 answer:

Neko [114]3 years ago

5 0

A 1/4 lbs burger is 1 part of 4. It cost 0.75. Take 4 parts times .75 and the anwer is 3.00

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A car takes 4 hours to reach a destination traveling at a speed of 63 km/h. How long will it take to cover the same distance if

Gre4nikov [31]

Answer:

It will take 4.5hrs to cover the same distance

The constant of variation,k=252

Step by step explanation

Given that,

$speed = \frac{distance}{time}$

From the question

Time=4hr

Speed=63km

By substitution we obtain,

$63= \frac{distance}{4}$

Cross multiplying we get,

$distance=63 \times 4$

$distance=252km$

Now,

speed=56km

Distance Covered=252km

By substitution:

We obtain,

$56= \frac{252}{time}$

Cross multiply

$56\times time=252$

Divide through by 56

$time= \frac{252}{56}$

$time=4.5hrs$

From the formula,

$speed= \frac{distance}{time}$

Which means that, speed and time varies inversely.

$speed\propto \frac{1}{time}$

Let k be variation constant

This implies that

$speed = k \times \frac{1}{time}$

$k=speed \times{time}$

Taken,

Time=4hrs

speed=56km

$k=56\times4$

$k=252$

4 0

3 years ago

A contestant has to eat 45 hot dogs in 9 minutes to beat the record for hot dog eating. How much time does the contestant have t

Nutka1998 [239]

Answer:

Step-by-step explanation:

If the contestant has 9 minutes for 45 hotdogs, then you would have to divide 45 by 9 to get the answer. 45 divided by 9 is 5.

Then, to see if your answer makes sense, you would multiply 9 by 5 to see if you get 45, which you do.

3 0

3 years ago

Evan and Peter have a radio show which consists of 2 segments. They need 4 less than 11 songs in the first segment. In the secon

Musya8 [376]

Answer:

<h2>B: ( 11-4) + 3x (11-4) - 5 = 23 songs</h2>

Step-by-step explanation:

3 0

4 years ago

Read 2 more answers

Solve simultaneous equations 3x-2y=17 +2x-2y=10

Zarrin [17]

Answer:

(7;2)

Step-by-step explanation:

$3x - 2y = 17 \\ - 2y = 17 - 3x \\ 2x + 17 - 3x = 10 \\ 2x - 3x = 10 - 17 \\ - x = - 7 \\ x = 7 \\ - 2y = 17 - 21 \\ - 2y = - 4 \\ y = 2$

3 0

3 years ago

Please can someone show me how to do this. Thanks

Nadusha1986 [10]

Answer:

x equals 3.00cm

Step-by-step explanation:

Use Pythagoras' Theorem.

a = (14x-45)

b = (16x+27)

c = (25x)

Plug in the variables above into Pythagoras' Theorem that is, a^2+b^2=c^2.

Solve the resulting quadratic equation and reject the negative answer as length is always positive.

5 0

3 years ago