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gtnhenbr [62]
3 years ago
12

Pablo ran a concession stand last Saturday and made $79.80 from selling a total of 53 hot dogs and hamburgers. Each hot dog sold

for $1.40 and each hamburger sold for $1.80. Which system of equations can be used to determine the number of hot dogs, x, and hamburgers, y, that were sold?
A. 1.4x + 1.8y = 79.8
39x + 14y = 53

B. 0.7x + 0.9y = 79.8
x + y = 3.2

C. 1.4x + 1.8y = 79.8
x + y = 53

D. 2.8x + 3.6y = 3.2
x + y = 546
Mathematics
1 answer:
Olegator [25]3 years ago
4 0

Answer:

C. 1.4x + 1.8y = 79.8

x + y = 53

Step-by-step explanation:

The problem statement gives rise to two equations, one for the amount of money made, and one for the number of items sold. If x and y represent the numbers of items, and if 53 items were sold, then one of the equations will be ...

x + y = 53

This is sufficient to let you choose the correct answer.

___

Since "x" items were sold for $1.40 and "y" items were sold for $1.80, the sales revenue will be the sum of products of price and quantity:

1.40x +1.80y = 79.80

This confirms the choice of answer.

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Which figure can be transformed into figure P by a translation 2 units to the right followed by a reflection across the x-axis?
Rudiy27

Answer:

Figure M

Step-by-step explanation:

Figure P has vertices at points (-2,4), (-2,8), (-6,8) and (-6,6).

Consider figure M with vertices (-4,-4), (-4,-8), (-8,-8) and (-8,-6).

1. Translate figure M 2 units to the right. This translation has the rule:

(x,y)→(x+2,y),

so

  • (-4,-4)→(-2,-4);
  • (-4,-8)→(-2,-8);
  • (-8,-8)→(-6,-8);
  • (-8,-6)→(-6,-6).

2. Reflect the translation image figure M across the x-axis according to the rule

(x,y)→(x,-y)

Thus,

  • (-2,-4)→(-2,4);
  • (-2,-8)→(-2,8);
  • (-6,-8)→(-6,8);
  • (-6,-6)→(-6,6).
4 0
3 years ago
For the graphed function f(x) = (2)x + 2 + 1, calculate the average rate of change from x = −1 to x = 0.
Nikolay [14]
To solve, you will need to find the y intercept which in this case is on the graph. The find the slope's between the two points and calculate the average slope by adding the two then dividing. Hope that helps! 

5 0
4 years ago
Read 2 more answers
Ethan's taxable income is $87,525. Use this tax schedule to calculate the total amount he owes in taxes.
Reptile [31]
$18,617.75 is the answer
$87,525-$77,100=$10,425 (the amount over $77,100)
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$2,919+$15,698.75 (the already taxed amount in the chart)=$18,617.75



8 0
3 years ago
Add the linear expressions.
Cerrena [4.2K]

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-4x-x+2x-2-2

-5x+2x-4

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4 0
3 years ago
What is the distance between points (4, -7) and (-5, 9)? Round to the nearest tenth of a unit
seropon [69]
The correct answer is 18.4. We can use the distance formula to solve this problem.

(x - x)² + (y - y)² = d²   Distance formula
(4 + 5)² + (-7 - 9)² = d²   Substitute the given values; make sure to always subtract in the same direction (for example, if you had (1, 2) and (3, 4), if you start by subtracting 1 - 3, then subtract 2 - 4 again, not 4 - 2); also remember that when you subtract a negative, you add
9² - 16² = d²   Add; remember that when you subtract a positive from a negative, the answer is negative (-7 - 9 = -16), but this doesn't really matter since we're about to square it anyway
81 +  256 = d²   Square both numbers; you can use a calculator for this, if you want
337 + d²   Add
d = √337   Take the square root of both sides to cancel out the exponent

So, the distance is √337. You can use a calculator to get the estimated answer, which is about 18.4

Hope this helps!

5 0
4 years ago
Read 2 more answers
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