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elena-14-01-66 [18.8K]
3 years ago
8

Solve the equation for a. Write a reason for each step. a-3b=b+7

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
3 0
a-3b=b+7 \\
a=4b+7
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The local food pantry has 1, 600 cans of fruit. They give away 155 cans of fruit each week. Assuming no new donations are made,
melomori [17]

Answer:

670 cans of fruit

Step-by-step explanation:

sorry if this answer is wrong

5 0
4 years ago
(6m^3 -16m^2 + 15m - 40) / (2m^2 + 5)
Helen [10]
        6m3 - 16m2 + 15m - 40<span> Simplify ————————————————————— 2m2 + 5 </span>Checking for a perfect cube :

<span> 4.1 </span>  <span> 6m3 - 16m2 + 15m - 40</span>  is not a perfect cube 

Trying to factor by pulling out :

<span> 4.2 </span>     Factoring: <span> 6m3 - 16m2 + 15m - 40</span> 

Thoughtfully split the expression at hand into groups, each group having two terms :

Group 1:  15m - 40 
Group 2: <span> -16m2 + 6m3</span> 

Pull out from each group separately :

Group 1:   (3m - 8) • (5)
Group 2: <span>  (3m - 8) • (2m2)</span>
               -------------------
Add up the two groups :
              <span> (3m - 8)  • </span><span> (2m2 + 5)</span> 
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<span>3m-8 is the answer</span>

4 0
3 years ago
Which of the following are incorrect expressions for slope?
vfiekz [6]

Answer:

Option B and C are correct.

\frac{x_2-x_1}{y_2-y_1}

\frac{run}{rise} are the expression incorrect for slope

Step-by-step explanation:

Slope is defined as the change in the dependent variable  relative to the change in the dependent variable

or the ratio of the horizontal changes to vertical changes between any two points on the graph of the line.

The vertical changes between any two points is rise

The horizontal changes between any two points is run.

Formula for slope is given by:

For any two points (x_1, y_1) and (x_2, y_2)

then slope is:

\text{Slope} =\frac{rise}{run}= \frac{y_2-y_1}{x_2-x_1}

or we can write this as:

Δy = y_2-y_1

Δx = x_2-x_1

⇒\text{Slope} = \frac{\triangle y}{\triangle x}

Therefore, the expression which are incorrect for slope  are;

\frac{x_2-x_1}{y_2-y_1}

\frac{run}{rise}

8 0
3 years ago
Read 2 more answers
My brain is too tired to function someone save me
lina2011 [118]

Answer:

(3,2)

Step-by-step explanation:

Hope I helped

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3 years ago
Shaking wants to write 2/6 as a decimal. which method could she use divide 6 by 2. divide 2 by 6. multiply 6 by 2. multiply 2 by
Jlenok [28]

she should use 2 by 6

Step-by-step explanation:

2 divided by 6 will give 0.3 in 1d.p

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1 year ago
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