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allsm [11]
3 years ago
12

50 - 3n = 7n + 80I need help on the steps on doing this problem??

Mathematics
1 answer:
polet [3.4K]3 years ago
6 0
50 - 3n = 7n + 80
    +3n     +3n ( add 3n to both sides)
50 = 10n + 80
-80            -80 (subtract 80 from both sides)
-30 = 10n (divide both sides by 10)
n = -3
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Please help. A trapezoid has base measures of 10 and 14 inches and a height of 6 inches. What is the area?
yaroslaw [1]

Answer:

84 in^2

Step-by-step explanation:

Find the area by first finding the average of 10 and 14 (it is 12) and then multiplying this result (12) by 6:  area of trapezoid = 84 in^2.



6 0
3 years ago
Stefan sells Jin a bicycle for $137 and a helmet for $17. The total cost for Jin is 140% of what Stefan spent originally to buy
MatroZZZ [7]

Answer:

Stefan originally spent $110.

Stefan made a profit of $44.

Step-by-step explanation:

Given that:

Stefan sold the bike and helmet for $137 and $17

Total amount = 137+17 = $154

This is 140% of the price Stefan originally paid.

Let,

x be the original price paid by Stefan

140% of x = $154

\frac{140}{100}x=154\\1.4x = 154\\\frac{1.4x}{1.4}=\frac{154}{1.4}\\x=110

Therefore,

Stefan originally paid $110 for the bicycle and helmet.

Profit made by Stefan = 154-110 = $44

Hence,

Stefan originally spent $110.

Stefan made a profit of $44.

4 0
3 years ago
Mr.Marquez had 123 eggs in his refrigerator in his restaurant.He put 32 more cartoons of eggs in the refrigerator.Each cartoon c
skad [1K]

Answer:

2790

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Find the slope of the line that passes through (87, 91) and (88, -4).
Elanso [62]
<h2>Answer:    slope = - 95</h2><h2> </h2>

Step-by-step explanation:    

      The question gives us two points, (87, 91) and (88, -4), from which we can find the slope and later the equation of the line.

<u> </u>

<u>Finding the Slope</u>  

The slope of the line (m) = (y₂ - y₁) ÷ (x₂ - x₁)      

                                        =  (91 - (- 4)) ÷ (87 - 88)    

                                        =  - 95

<em><u /></em>

<em><u /></em>

<em><u>Checking my answer:</u></em>

<em>Finding the Equation</em>  

We can now use the point-slope form (y - y₁) = m(x - x₁)) to write the equation for this line:  

                                ⇒  y - (-4) =  - 95 (x - 88)

                                       y + 4 =  - 95 (x - 88)

<em>To test my answer, I have included a Desmos Graph that I graphed using the information provided in the question and my answer.</em>

5 0
2 years ago
Which of the following has an x term when simplified
34kurt

Answer:

b

Step-by-step explanation:

if you imply all the other ones, all the x's cancel out.

4 0
3 years ago
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