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Elza [17]
3 years ago
11

A second number is 6 less than a first number. A third number is twice the first number. If the sum of three number is 306, find

the numbers
Mathematics
1 answer:
Serga [27]3 years ago
3 0

Answer:

first number = 78

second number = 72

third number = 156

Step-by-step explanation:

first number = a

second number = b

third number = c

we have

b=a-6   equation 1

c=2a     equation 2

a+b+c=306    equation 3

using equation 1 and equation 2 in equation 3 we have

a+a-6+2a=306

4a=306+6

4a=312

a=312/4

a=78= first number

b=78-6=72=second number

c=2*(78)=156 third number

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Answer:

Jennifer - 1st

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Step-by-step explanation:

Susan is 2nd.

Places 1, 3, 4, and 5 are left.

Janice and Jennifer both start with J. None of the other swimmers start with the same first letter. One is 1st and one is 4th.

Since Maria finished immediately after Janice, and Janice must be 1st or 4th, Janice can't be first since 2nd place is already taken. This means that Janice is 4th and Maria is 5th.

Places 1 and 3 are left.

We know Jennifer is 1st or 4th and since 4th is taken, Jennifer is first.

Place 3 is left.

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8 0
2 years ago
Help me out! I always mark brainliest. Unless of course, it is incorrect or inadequate. Please include how you did the problem.
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f(x) has the equation
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If we expand this polynomial out, we get the simplest standard form
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Therefore the answer to this question is f(x) = x^3-x^2+17x+87
5 0
3 years ago
Which statement must be true according to the box plot? The data is symmetric, and the lowest number of crackers in a package wa
LUCKY_DIMON [66]

Answer:

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Step-by-step explanation:

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aleksklad [387]
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horrorfan [7]

Answer:

B and C

Step-by-step explanation:

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and

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6 0
2 years ago
Read 2 more answers
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