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Scilla [17]
2 years ago
7

Nancy and Bill collect coins. Nancy has x coins. Bill has 3 coins fewer than two times the number of coins Nancy has. Write and

simplify an expression for the total number of coins Nancy and Bill have.
Mathematics
1 answer:
Hatshy [7]2 years ago
7 0
Nancy & Bill can have 2x-5 coins
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of 320 consumers polled, some purchase blu-ray movies, some only purchase movies on dvd, and some do both. if 300 people polled
Helga [31]

Answer:

20 people only buy dvds.

Step-by-step explanation:

There are two groups in this problem. One group of people that buys dvds and one that buys blu rays. The total amount of people who buy blu rays is 300, but there's an intersection between the groups and the size of this is 280 people who actually buy both. In order to find out how many people only buy DVDs we first need to figure out how many only buy blu-rays. That is:

people who only buy blu rays = people who buy blu rays - people who buys blu rays and dvds

people who only buy blu rays = 300 - 280 = 20

We can now calculate the amount of people who only buy dvds and that is:

people who only buy dvds =total amount of people - ( people who only buy blu rays + people who buy both)

people who only buy dvds = 320 - (20 + 280) = 320 - 300 = 20 people

3 0
3 years ago
What is the area of a rectangle with length 36 cm and width 4 cm?
natita [175]

Answer:

A=144cm²

Length: 36cm

Width: 4cm

Step-by-step explanation:

36 x 4 = 144 cm

3 0
2 years ago
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Which ratio can be used to solve for y in the triangle below?
frosja888 [35]

Answer:A

Step-by-step explanation:

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3 years ago
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Given that (8,7) is on the graph of f(x), find the corresponding point for the function f(x)+4
ozzi

Answer:

( 8,11)

Step-by-step explanation:

When x = 8 the output is 7

The new function

f(x) +4

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The output is f(8) +4= 7+4 = 11

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1/2(8x-20)=1/4(12x+32)
Mila [183]

Answer:

x=18

Step-by-step explanation:

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8+10

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