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Ann [662]
3 years ago
13

−11b+7=40 solve for b

Mathematics
2 answers:
Ipatiy [6.2K]3 years ago
7 0

Answer:

<em>B=-3</em>

Step-by-step explanation:

<em>-11b+7=40</em>

<em />

<em>Subtract -7 from both sides</em>

<em />

<em>-11b-7=40-7</em>

<em />

<em>11b=33</em>

<em />

<em>divide by -11</em>

<em />

<em>11b/-11=33/-11</em>

<em />

<em>-11 and -11 cancel out, leaving you with B=-33/11</em>

<em />

thus B=-3

Marizza181 [45]3 years ago
4 0

Answer:

Step-by-step explanation:

subtract 7 on both sides

40-7=33

-11b=33

divide -11 on both sides

b=-3

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Divide 29 into two parts so that the sun of the squares of the parts is 425.Find the value of each Part.
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Answer:

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Step-by-step explanation:

let the 2 parts be x and y, then

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From (1) → x = 29 - y → (3)

substitute x = 29 - y into (2)

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divide all terms by 2

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(y - 13)(y - 16) = 0

equate each factor to zero and solve for y

y - 13 = 0 ⇒ y = 13

y - 16 = 0 ⇒ y = 16

substitute these values into (3)

x = 29 - 13 = 16 and x = 29 - 16 = 13

The 2 parts are 13 and 16


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