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Mariulka [41]
3 years ago
13

Andrew has six fewer coins than Casey. Bob has two more than twice as many coins as Andrew. Altogether, they have 544 coins. How

many coins does Bob have?
Mathematics
1 answer:
Damm [24]3 years ago
8 0
Assuming: number of coins Andrew has=a, number of coins Bob has=b, number of coins Casey has=c
Andrew has six fewer coins than Casey, so, c-6=a, or a+6=c
Bob has two more than twice as many coins as Andrew, so 2a+2=b
Together, there are 544 coins: a+b+c=544. Rewrite the equation in terms of a: a+(2a+2)+(a+6)=544. Combine like terms: 4a+8=544. Solve the equation: 4a=536, so a=134. If b=2a+2, then b=2(134)+2=268+2=270.
Bob has 270 coins.
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Answer:

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Step-by-step explanation:

<em>Complementary angles sum up to 90°</em>

<u>Given</u>

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<u>Substituting P in the first equation</u>

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<u>Then </u>

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I think this is the answer. I tried.

Step-by-step explanation:

13/10/4 = .325

A. 1,400 x .325=455

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Find the value of r in (4, r), (r, 2) so that the slope of the line containing them is −53
Elan Coil [88]

Answer:

C) 7

===========================================

Work Shown:

Use the slope formula

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m = (y2-y1)/(x2-x1)

-5/3 = (2-r)/(r-4)

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-5r+20+5r = 6-3r+5r .... adding 5 to both sides

20 = 6+2r

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14 = 2r

2r = 14

2r/2 = 14/2 .... dividing both sides by 2

r = 7

The slope of the line through (4,7) and (7,2) should be -5/3, let's check that

m = (y2-y1)/(x2-x1)

m = (2-7)/(7-4)

m = -5/3

The answer is confirmed

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Answer:

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Step-by-step explanation:

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