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s2008m [1.1K]
3 years ago
10

AJ has 31 pennies and nickels. he has 67 cents. how many nickels does he have?

Mathematics
1 answer:
alisha [4.7K]3 years ago
8 0

Answer:

9 nickels

Step-by-step explanation:

Set the number of pennies as x. The number of nickels would be 31 - x.

The pennies are worth x cents and the nickels are worth 5 * (31 - x), or 155-5x.

We are given that he has 67 cents, so:

x + 155 - 5x = 67

Solve.

-4x = 67 - 155 = -88

x = 22

Nickels are 31 - x, so the number of nickels he has is 9.

I hope this helps!

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pashok25 [27]
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3 0
3 years ago
Suraj took a slice of pizza from the freezer and put it in the oven. The pizza was heated at a constant rate.
iragen [17]

Answer:

The pizza heats up an average of 7.50 degrees per minute

Step-by-step explanation:

The table shown

Time (minutes) Temperature (degrees Celsius)

1                          2.52

7                          47.547

13                          92.592

Since the pizza was heated at a constant rate, we can model the experiment as a line, where the slope represents how fast the pizza was heated

Slope

m   =  (y2 - y1)/(x2 - x1)

Let

(x1,y1) = (7, 47.547)

(x2,y2) = (13, 92.592)

m = (92.592 - 47.547)/(13-7)

m = 7.5075

The pizza heats up an average of 7.50 degrees per minute

4 0
3 years ago
Read 2 more answers
When graphing do you use an open or closed circle for &gt;
meriva

Answer:

open

Step-by-step explanation:

When there is a line under the inequality symbol its a closed circle but if there is not then its an open circle

5 0
3 years ago
Find the angle measures given the figure is a rhombus
IrinaK [193]

Answer:

74°

Step-by-step explanation:

A rhombus is a quadrilateral that has its opposite sides to be parallel to be each other. This means that the two interior opposite angles are equal to each other. Since the sum of the angles of a quadrilateral is 360°.

According to the triangle, since one of the acute angle is 32°, then the acute angle opposite to this angle will also be 32°.

The remaining angle of the rhombus will be calculated as thus;

= 360° - (32°+32°)

= 360° - 64°

= 296°

This means the other two opposite angles will have a sum total of 296°. Individual obtuse angle will be 296°/2 i.e 148°

This means that each obtuse angles of the rhombus will be 148°.

To get the unknown angle m°, we can see that the diagonal cuts the two obtuse angles equally, hence one of the obtuse angles will also be divided equally to get the unknown angle m°.

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m° = 74°

Hence the angle measure if m(1) is 74°

4 0
3 years ago
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yawa3891 [41]
Keep note of these things before we start:
-Of is a keyword that tells us multiplication is being done
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Okay, here we go:
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250 - 80 = y
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Katie has 170 pages left to read
Hope this helps!
8 0
3 years ago
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