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Rus_ich [418]
4 years ago
11

Sam purchased two bottles of water and three hot dogs a the ball park for $8.50. Mary purchased one bottle of water and two hot

dogs for $5.25. What system of equations could be solved to determine the prices in dollars of a hot dog (h) and a bottle of water (w)?
A. 2w+3h=8.50; w +2h=5.25

B. 3w+2h=5.25; w+2h=5.25

C. w+h=8.25; w+h= 5.25

D. 3w+2h=8.50; 2w+h=5.25
Mathematics
1 answer:
Nata [24]4 years ago
5 0
C. is the correct answer
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Complete the square to form a perfect square trinomial x^2-14x+
fiasKO [112]
Answer: x^2 - 14x + 49

Explanation:

1) Divide the coefficient of x by 2:

14 / 2 = 7

2) so you have to add 7^2 = 49

x^2 - 14x + 49

3) that trinomial is equivalent to:

=> (x - 7)^2

4) prove that using the formula (a - b)^2 = a^2 - 2ab + b^2

(x - 7)^2  = x^2 - 14x + 49

Then you have to add 49 to complete the square. and form a perfect square trinomial.
7 0
3 years ago
PLEASE HELP! Match the steps to find the equation of the parabola with focus (-1, -8) and directrix y = - 12.
nevsk [136]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
A cup of milk has 10 grams of protein. How much protein is in 2.5 cups of milk?
Sedaia [141]

Answer:

25 grams of protein

Step-by-step explanation:

10 grams of protein is in 1 cup of milk.

To understand how many grams of protein are in 0.5 cups of milk, I would need to divide 10 by 2, to get 5.

There are 5 grams of protein in 0.5 cups of milk.

Now if I want to see how many grams of protein are in 2 cups of milk, I would multiply 10 by 2, to get 20.

There are 20 grams of protein in 2 cups of milk.

But, the question is asking for how much protein is in 2.5 cups of milk.

Since we know how much is in 2 cups, and 0.5, we can just add them together, because 2+0.5 is 2.5.

20+5 is 25 grams.

There are 25 grams of protein in 2.5 cups of milk.

6 0
3 years ago
Plz help me!?!?<br><br> and thank u
vesna_86 [32]
Subtract 7.8 points by 4.8 and you get 3.4 !!
7 0
3 years ago
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Trapezoid Area = (Base1 + Base2) (h/2)
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6 0
3 years ago
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