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Veseljchak [2.6K]
2 years ago
8

leonardo read that his reptile food should be given at a temperature of 72.5°F. He keeps the food in the freezer at –4°F. He has

found that if he sets the food on his reptile’s hot rock, the temperature rises 8.5 degrees each hour. How many hours will it take for the reptile food to reach 72.5°F?
Mathematics
2 answers:
jolli1 [7]2 years ago
7 0

Answer:

9 hours

Step-by-step explanation:

n200080 [17]2 years ago
6 0
Answer: 9 hours
Explanation:
Total temp range - 72.5°F - (-4°F) = 76.5°F
Amount of time needed - 76.5°F/8.5°F = 9
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kompoz [17]

9514 1404 393

Answer:

  6

Step-by-step explanation:

If 60% are yellow, the other 40% are green. Then the difference between yellow and green is 60% -40% = 20% of the total number of fish. That difference also happens to be half of the number of green fish:

  20% = (1/2)(40%)

So, the number of green fish is 2×3 = 6.

_____

If you wanted to, you could write a couple of equations:

  y - g = 3

  y = 0.60(y +g)

Using the first equation to write an expression for y, we get ...

  y = g +3

Using this in the second equation, we have ...

  g +3 = 0.6(g +3 +g)

  g +3 = 1.2g +1.8 . . . . eliminate parentheses

  1.2 = 0.2g . . . . . . . .  subtract g+1.8

  1.2/0.2 = g = 6 . . . . . divide by 0.2

There are 6 green fish in the aquarium.

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3 years ago
Jenny has a rope that is 7 1/2 feet long. She wants to cut it into pieces that are 3/4 of a foot long.
Dmitrij [34]
10 I was dividing and got 10 hope it helped
5 0
2 years ago
Are the two triangles similar?
Tpy6a [65]

Answer:

Option B Yes by AAA

Step-by-step explanation:

we know that

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so

\frac{HM}{MK}=\frac{GM}{MJ}

substitute the values and verify

\frac{8}{12}=\frac{6}{9}

simplify

\frac{2}{3}=\frac{2}{3} -------> is true

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4 0
3 years ago
Which is the best approximation for the value 140
zzz [600]
140 is a composite number. Factor pairs: 140 = 1 x 140, 2 x 70, 4 x 35, 5 x 28, 7 x 20, 10 x 14. Factors of 140: 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140. Prime factorization: 140 = 2 x 2 x 5 x 7, which can also be written 140 = 2² x 5 x 7
4 0
3 years ago
Calculate the length of line segment XY in each triangle.
coldgirl [10]

Answer:

XY = 10 cm

Step-by-step explanation:

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XY = \frac{1}{2} DE = \frac{1}{2} × 20 = 10 cm

5 0
3 years ago
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