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3 years ago

What is the value of b in the equation 3b + 2(b − 1) = 8?

Mathematics

2 answers:

Ray Of Light [21]3 years ago

7 0

3b + 2(b − 1) = 8
3b + 2b - 2 = 8
5b = 10
b = 2

answer b = 2

salantis [7]3 years ago

5 0

So to start out the equation, you would have to distribute the 2 to the numbers and letters in the parenthesis. This should get me to:3b+2b-2=8. Add 2 on both sides of the equation and add up like terms. Now the equation looks like this: 5b=10. Now divide 5 to both sides which should give you b. b=2 I hope this helps you!

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Factories the following question

Ber [7]

Answer:

$k(3a-2b)$

Step-by-step explanation:

In the equation $3ak-2bk$ , 'k' is the only common term.

Factor out 'k':

$3ak-2bk\\\\\boxed{k(3a-2b)}$

Hope this helps.

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3 years ago

two 3 in. by 5 in. index cards are placed side by side so that their edges are touching. which term best represents where the ca

11Alexandr11 [23.1K]

Which term best represents where the cards touch?
A.Angle
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C.Point
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7 0

3 years ago

perimetrul unui paralelogram este de 30 cm.una dintre laturi are lungimea de 6 metri . dterminati lungimile celolrarte laturi

zzz [600]

To solve this problem you must apply the proccedure shown below:

1. By definition, the opposite sides of a parallelogram are parallel and have equal length.

2. The figure attached shows that the opposite sides with equal length are:

$a=c\\b=d$

3. Keeping this on mind, you have that the side c and a are equal and measure six centimeters.

4. To find the length of the other sides, you must apply the following formula for calculate the perimeter of a parallelogram:

$P=2(a+b)$

4. If you solve for b, you will obtain the measure of b and d:

$30cm=2(6cm+b)\\30cm=12cm+2b\\b=9cm$

Therefore the answer is:

The lengths of the sides are: 6 cm, 6 cm, 9 cm and 9 cm.

8 0

3 years ago

Cos(x) = 2.3 how do I find x?

mote1985 [20]

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4 years ago

How do you solve this 2 step equation: 8+b/-4=5

Delicious77 [7]

I'm going to rewrite the equation assuming this is the correct form:
$8 - \frac{b}{4} = 5
\newline
-8 + 8 - \frac{b}{4} = 5 - 8
\newline
(-4)\cdot -\frac{b}{4} = -3 \cdot (-4)
\newline
b = -12$

3 0

3 years ago