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Rashid [163]
2 years ago
5

Suppose you have 20 coins that total $4.00. Some coins are nickels and some are quarters. Which of the following pairs of equati

ons would you use to find out how many of each coin you have?
Mathematics
1 answer:
Firlakuza [10]2 years ago
7 0

Answer:

The answer is below,

Step-by-step explanation:

n+q=205n+25q=400

I hope this helps! :)

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The cost of a pound of nails increased from ​$2.17 to ​$2.52. What is the percent of increase to the nearest​ whole-number perce
Cloud [144]

Answer:

16%  is the percent of increase to the nearest​ whole-number percent.

Step-by-step explanation:

As the cost of a pound of nails increased from ​$2.17 to ​$2.52.

  • $2.52 - $2.17 = $0.35

so dividing the 0.35 by 2.17 would give us the percetange of increase

  • 0.35/2.17 = 0.16 which is 16%.

Therefore, 16%  is the percent of increase to the nearest​ whole-number percent.

7 0
3 years ago
PLEASE ANSWER AND HELP
ra1l [238]
She must save $91.80.
7 0
2 years ago
Ms. Alders has $50 to buy prizes for the treasure box in her classroom. She bought 12 packages of stickers, 8 boxes of pencils,
IceJOKER [234]
The answer is $10

if you add up the total price for each of the items it totals to $40, she has $50 so $50-$40=$10

6 0
2 years ago
What is the equation of the parabola?
Neporo4naja [7]

Answer:

y = -1/8 x² + 5

Step-by-step explanation:

Parabola opens vertically and vertex (h,k) = (0,5), pass point (4,3)

basic formula: y = a(x - h)² + k

y = a (x-0)² + 5

y = ax² + 5         pass (4,3)

3 = 16a + 5

a = (3-5)/16 = -1/8

equation: y = -1/8 x² + 5

check: pass another point (-4,3)

-1/8 * (-4)² + 5 = -2 + 5 = 3

5 0
3 years ago
2. Rachel makes cranberry almond cookies. The number of cups of cranberries and the number of cups of almonds are shown in the t
Veronika [31]

Answer:

Step-by-step explanation:

By 2 for the first one.      And for 2 they skip counting by 6

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3 years ago
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