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3 years ago

Solve by factoring 7b^2-8b+3=2

Mathematics

2 answers:

Ahat [919]3 years ago

6 0

$7b^2-8b+3=2 \\ 7b^2-8b+1=0 \\ (7x-1)(x-1)=0 \\ x=1 \\ x= \frac{1}{7}$

mixas84 [53]3 years ago

5 0

Subtract the 2 over from the 3 which leaves you with 1 as the constant. Then you have 7b^2-8b+1. Slide the 7 over to the 1 using the slide and divide method. This leaves you with b^2-8b+7. Then just think "what multiplies to get 7, and adds to -8." The answer to that is (x-7)(x-1). Then you have to divide by 7 because you slid it earlier. So that gives you the answer of : (x-1)(7x-1).

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3 years ago

A baker has 5 lbs of sugar. She divides them equally into 3 containers. She then uses 1 container to bake pie. Write an expressi

Nata [24]

Total = 5 lb

3 container = 5 lb
1 container = 5 ÷ 3
1 contain23 = 1 2/3 lb

Answer: He used 1 2/3 lb of sugar.

4 0

3 years ago

Slope of (-7,-2) (9,4)

Olenka [21]

Answer:

m= $\frac{3}{8}$

Step-by-step explanation:

1. Use the slope equation to solve the problem

$\frac{y_{2} -y_{1}}{x_{2} -x_{1} }$

2. Plug in your values into the equation.

$\frac{4-(-2)}{9-(-7)}$

3. Simplify the equation.

m= $\frac{3}{8}$

4 0

3 years ago

Kenneth signed up to receive Internet service for $13 per month plus a $30 start-up fee. Which equation could be used to find th

almond37 [142]

The equation 13x+30=134 can be used to find the number of months Kenneth can receive internet service.

Step-by-step explanation:

Given,

Start up fee to receive internet = $30

Per month charges = $13

Total amount = $134

Let,

x be the number of months.

y be the total cost.

y = 13x+30

Putting y=134

$134=13x+30\\13x+30=134$

The equation 13x+30=134 can be used to find the number of months Kenneth can receive internet service.

Keywords: equation, addition

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8 0

4 years ago

Lisa drove 819 miles 13 hours. At the same rate, how long would it take her to drive 504 miles?

Damm [24]

Answer:

The answer is

<h2>8 hours</h2>

Step-by-step explanation:

To solve this question we use ratio and proportion

From the question

Lisa drove 819 miles for 13 hours

If for Lisa drove 819 miles for 13 hours

Then for 504 miles she will drive

<h2> $\frac{504 \times 13}{819} = \frac{6552}{819}$ </h2>

We have the final answer as

<h3>8 hours</h3>

Hope this helps you

8 0

4 years ago