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Stolb23 [73]
3 years ago
6

Two trains leave stations 272 miles apart at the same time. One train travles 75 miles per hour while the other travles at 95 mi

les per hour. How long will take for the two trains to meet?
Mathematics
1 answer:
VARVARA [1.3K]3 years ago
5 0
102 miles for them to meet up

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A grocer bought n eggs at $x each. He marked up the price of each egg by $y and sold all of them. Find the sales amount, express
Alex777 [14]

Answer:

Sales = n \times ($x + $y)

Step-by-step explanation:

The basic simple sales equation is

Quantity \times Price = Sales

Here in the given question,

Total quantity of sales = n

Price = Cost + markup

(Markup refers to the profit added to cost)

Thus price = $x (cost) + $y (markup)

Sales = n \times ($x + $y)

Sales amount is the total amount received from sales of products, total quantity at some price provided.

4 0
3 years ago
The graph below shows the value of Edna's profits f(t), in dollars, after t months:
umka21 [38]
Since we know that the graph of our quadratic function has x-intercepts at (6,0) and (18,0), x=6 and x=18 are the zeroes of our quadratic. To find our quadratic we are going to factor each zero backwards and multiply them:
x=6
x-6=0
x=18
x-18=0

(x-6)(x-18)=x^{2}-6x-18x+108
=x^{2}-24x+108

Now that we have our quadratic function, we are going to use the average formula: m= \frac{f(9)-f(3)}{9-3}
where
f(9) is the function evaluated at  the <span>9th month
</span>f(3) is the function evaluated at the 3rd month 

m= \frac{f(9)-f(3)}{9-3}
m= \frac{[9^{2}-24(9)+108]-[3^{2}-24(3)+108]}{9-3}
m= \frac{-27-45}{6}
m= \frac{-72}{6}
m=-12

We can conclude that the closest approximate average rate of change for Edna's profits from the 3rd month to the 9th month is: <span>B. −11.63 dollars per month.</span>

6 0
3 years ago
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How long does it take to double $1000 at an annual interest rate of 6.35% compounded monthly?
KatRina [158]

Answer:

63.5

Step-by-step explanation:

1000× 6.35 / 100 = 63.5

3 0
2 years ago
To multiply a decimal number by 1000 move the decimal point
KengaRu [80]
You'll have to move the decimal point<span> to the right as many </span>places<span> as there are zeros in the factor,then you'll have to m</span>ove the decimal point<span> one step to the right (10 has one zero),and m</span>ove the decimal point<span> two steps to the right (100 has two zeros).</span>
5 0
3 years ago
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Monica has 3$ in her wallet .If this is 10 percent of her monthly allowance what is her monthly allowance
Maru [420]
Her monthly allowance would be 30$ since 3$ x 10=30.

6 0
3 years ago
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