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Mnenie [13.5K]
3 years ago
11

Alvin finished 1/5 of science questions assigned for a week .in comparison erin finished 3/8 and peter finished 7/10 of science

questions .who finished the greater fraction oF his science work
Mathematics
1 answer:
luda_lava [24]3 years ago
5 0

Answer:

the greater betweem them is peter

Step-by-step explanation:

to know the greater will compare between them make a common denominator that is 80 (divisible by 5, 8, 10)

then we have:

16/80 for Alvin

, 30/80 for erin

and 56/80 for peter

then peter who finished the greater fraction oF his science work

hope this helps

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A young boy has 40 total pets. He has two different types of pets. He has cats and penguins. The total number of the heads of hi
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Answer:

He has 30 penguins and 10 cats.

Step-by-step explanation:

Let's define the variables:

C =  number of cats.

P = number of penguins.

We know that he has a total of 40 pets, then:

C + P = 40

We also know that the total heads (40 heads, each animal has one) plus the number of wings (P*2, each penguin has 2) is equal to the number of feet of his pets (4*C + 2*P, because each cat has 4 paws, and each penguin has 2)

Then we have the equation:

40 + 2*P = 4*C + 2*P

Notice that in the second equation we have the term 2*P in both sides of the equation, then we can just subtract 2*P in both sides to get:

(40 + 2*P) - 2*P = 4*C + 2*P - 2*P

40 = 4*C

Now with this, we can find the value of C.

40/4 = C = 10

Then he has 10 cats.

Now we can replace this in the equation:

P + C = 40

to find the value of P

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P = 40 - 10 = 30

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3 0
3 years ago
What is the domain of the function y =<br> x +4?
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On Monday the price of a company’s stock is $30 per share. On Tuesday, the stock price drops $3, on Wednesday it rises $7, on Th
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Answer:

The price at the end of the week is $33.

Step-by-step explanation:

We are given that on Monday the price of a company’s stock is $30 per share. On Tuesday, the stock price drops $3, on Wednesday it rises $7, on Thursday it rises $3, and on Friday it drops $4.

The price of a company’s stock on Monday = $30 per share

So, the mathematical statement that represents the situation is given by;

Price of company’s stock on Monday = $30

On Tuesday, the stock price drops $3, so the price of company’s stock on Tuesday = Price of company’s stock on Monday - Drop in price on Tuesday

              = $30 - $3 = $27

On Wednesday, the stock price rises $7, so the price of company’s stock on Wednesday = Price of company’s stock on Tuesday + Rise in price on Wednesday

              = $27 + $7 = $34

On Thursday, the stock price rises $3, so the price of company’s stock on Thursday = Price of company’s stock on Wednesday + Rise in price on Thursday

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On Friday, the stock price drops $4, so the price of company’s stock on Friday = Price of company’s stock on Thursday - Drop in price on Friday

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Hence, the price at the end of the week is $33.

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