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3 years ago

Two brothers bought together 10 books. One brother bought four books. How

Mathematics

2 answers:

oksian1 [2.3K]3 years ago

6 0

Answer:

The other brother bought 6

Step-by-step explanation:

10 books in total

4 books bought by one brother

10 - 4 = 6

Ludmilka [50]3 years ago

5 0

Answer:

2b+4b=10b the other brother bought 6 books.

Since we already know how many the other brother bought, we don't need to find that information.

Step-by-step explanation:

2b+4b=10b

combine like terms and subtract.

6b=10b

=4b

(hope this is correct.)

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What is the axis of symmetry for f(x) = -3x2 + 18 - 7

solong [7]

The vertex form:

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We have

$f(x)=-3x^2+18x-7\to a=-3,\ b=18,\ c=-7$

Substitute:

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tamaranim1 [39]

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Step-by-step explanation:

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Goryan [66]

Answer:

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Step-by-step explanation:

we know that

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then

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