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Karo-lina-s [1.5K]
3 years ago
13

John can eat 10 hot dogs in 4 mins. At this rate, how many hot dogs can he eat in 18 mins?

Mathematics
2 answers:
Alex3 years ago
3 0
He eats 7 and a half in 18 minutes
kherson [118]3 years ago
3 0
It deals with proportions. You put hotdogs over minutes.
Like 10 hotdogs over 4 minutes because that's how long it took to eat those hotdogs.
Then put 18 minutes on the bottom of the next fraction.
Then you cross multiply.
10 x 18 which equals 180.
Then you divide. 180/4
Which equals 45 hotdogs.
He ate 45 hotdogs in 18 minutes.
10 hotdogs in 4 minutes
45 hotdogs in 18 minutes.

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City A has an elevation of 3447 feet above sea level while city B has an elevation of 86 feet below sea level. How much higher i
Rainbow [258]
Add both distances to find the total distance between them: 3447+86=3533 ft.
7 0
3 years ago
Evaluate 3/7r + 5/8s when r= 14 and s= 8
jasenka [17]

Answer:

11

Step-by-step explanation:

Step 1:

3/7r+5/8s

Step 2:

So u multiply 3/7 by 14

3/7 x 14= 42/7= 6

Step 2.5:

Now u multiply 5/8 by 8

5/8 x 8= 40/8= 5

Step 3:

<u><em>6+5=11</em></u>

6 0
3 years ago
A rock is dropped from the top of a 2000-foot building. After 1 second, the rock is traveling 32 feet per second. After 2 second
alexandr402 [8]

Using the pairs (1,32) and (2,64) the rate of speed is (64-32 / 2-1 = 32 feet per second.

To find the rate of decent you would multiply the rate by time:

The equation is y = 32x

B. Replace x with 15 and solve for y:

Y = 32(15)

Y = 480

The rate of speed is 480 feet per second.

8 0
2 years ago
Select all of the following statements that are true:
Maurinko [17]

Answer:

B. You shouldnt take a random sample of more than 5% of the population size.

Step-by-step explanation:

B. You shouldnt take a random sample of more than 5% of the population size. This is True, so as to avoid the research analysis to be more complex to interpret and analyzed

However, the following are not true statements:

A. Random samples only generate unbiased estimates of long-run proportions, not long-run means. This is False, as there may be sampling error, when picking the sample, which will lead to bias estimates in the long run proportions

C. There is no way that a random sample of 100 people can be representative of all adults living in the United States. This is False, as using the right factors such as gender, age, income, etc, in selecting the sample, 100 people is enough to use as sample of adults living in the United States

D. If this question is voted out, the alternate option is "larger samples are always better than smaller samples, regardless of how the sample was collected." This is False, larger samples are not always better than smaller samples. In fact, they are often difficult to analyze and interpret.

E. Nonrandom samples are always poor representations of the population: This is False, depending on the expected outcome of the research study. Some research studies required the research to use Nonrandom samples to reach verifiable conclusion.

8 0
3 years ago
One bag of rice that weighs 4.5 pounds will have enough rice if a recipe calls for 60 ounces of rice. (1 pound = 16 ounces)
krek1111 [17]

the bag of rice weighs 4.5 pounds


Multiply 4.5 with 16 oz (as 1 lb = 16 oz)


4.5 x 16 = 72.


The bag of rice has 72 oz of rice inside.


The recipe only needs 60 oz of rice ∴ True, you will have enough, with 12 oz left over.



hope this helps

8 0
3 years ago
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