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TEA [102]
2 years ago
7

Rubin has 6 rolls of pennies containing 50 coins each, 5 rolls of nickels containing 40 coins each, 4 rolls of dimes containing

50 coins each, and 3 rolls of quarters containing 40 coins each. How much money does he have? A. $68.40 B. $8.20 C. $17.50 D. $63.00​
Mathematics
1 answer:
Anuta_ua [19.1K]2 years ago
4 0
<h2>Answer</h2>

A po pa brainliest

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A. The point-slope form of the equation of a line is y ? y1 = m(x ? x1), where m is the slope and (x1, y1) is a point on the lin
Rudiy27

Answer:

A.

y - 5 = -2(x-6)

Negative reciprocal gives you the perpendicular slope so negative reciprocal of 1/2 is -2.

Then apply point-slope form.

B. The answer is x = 6.

The midpoint of JK is

\left( \frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2} \right) = \left( \frac{8+ 4}{2}, \frac{4 + 4}{2} \right) = \left(6,4\right)

The line that goes through JK is just a horizontal line y = 4 because the y-coordinate does not change. So its perpendicular bisector is the vertical line that goes through the x-coordinate of the midpoint, that is, x = 6.

8 0
2 years ago
Devon earns a base salary of $600.00 per month, plus a 4% commission on his sales. Last month he brought in $15,000.00 in sales.
Thepotemich [5.8K]

Answer:

Total compensation = 600 + 0.04 * s  and a total last month of $1200

(which agrees with the second answer shown in the provided list)

Step-by-step explanation:

Total compensation comes from the addition of base salary ($600) plus 4% (0.04) of the sales (s). That means:

Total compensation = 600 + 0.04 * s

and since last month he brought $15000 in sales, he got from sales:

0.04 * 15000 = $600

which added to the base salary gives:

$600 + $600 = $1200

6 0
2 years ago
What is the domain of the function expressed by this formula?<br><br> Y= 1/x - 7
Igoryamba

Answer:

x cannot equal seven, there's a mark for it in RSM menu

Step-by-step explanation:

so the answer is y = -7

6 0
1 year ago
Scientists tag and release a group of salmon after they hatch. Later, they catch a sample of salmon that return to the river and
Liula [17]

The best prediction of the total number of tagged salmon in a sample of 2000 is 100.

<h3><u>Predictions</u></h3>

To determine what is the best prediction of the total number of tagged salmon in a sample of 2000, the following calculation must be performed:

  • 800 = 40
  • 2000 = X
  • 2000 x 40 / 800 = X
  • 80000 / 800 = X
  • 100 = X

Therefore, the best prediction of the total number of tagged salmon in a sample of 2000 is 100.

Learn more about predictions in brainly.com/question/18152997

7 0
2 years ago
The sum of a number and 2 is no more than the product of 9 and the same number
densk [106]
Let number = n

the sum of a number and 2: n + 2
is no more than: ≤
the product of 9 and the same number: 9(n)

n + 2 ≤ 9n is your answer


hope this helps
3 0
3 years ago
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