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yanalaym [24]
3 years ago
14

Joaquin buys 3 packs light bulbs. Each pack contains 12 light bulbs. After changing the bulbs in his house, he has 15 bulbs left

. How many light bulbs did he use?
Mathematics
1 answer:
ivanzaharov [21]3 years ago
5 0

Answer:

Step-by-step explanation:

3 times 12 equal 36.

36 minus 15 equals 21.

So Joaquin uses 21 light bulbs.

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A crayon has a mass of 30 grams. How many crayons can be made with 30 kilograms of colored wax
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The owner of a bookstore asked her regular customers to rank 3 items from a list of products that she would like to bring to the
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7 0
3 years ago
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Find the midpoint of the segment with the following endpoints.<br> (10,2) and (5, -7)
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(7.5 , -2.5)

Step-by-step explanation:

Sub the values into this formula

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Suppose that the height above ground of a person sitting on a Ferris wheel is described by the following.
sdas [7]

Answer:

Person will be 24 metres above the ground after 1.50 minutes

Step-by-step explanation:

Given:

h(t)=18.8-16.7\cos \left ( \frac{2\pi t}{5} \right )

To find:

time when the person be 24 meters above the ground

Solution:

Put h(t)=24

h(t)=18.8-16.7\cos \left ( \frac{2\pi t}{5} \right )\\24=18.8-16.7\cos \left ( \frac{2\pi t}{5} \right )\\16.7\cos \left ( \frac{2\pi t}{5} \right )=18.8-24\\16.7\cos \left ( \frac{2\pi t}{5} \right )=-5.2\\\cos \left ( \frac{2\pi t}{5} \right )=\frac{-5.2}{16.7}\\\cos \left ( \frac{2\pi t}{5} \right )=-0.3114\\\frac{2\pi t}{5}=1.887\\\frac{2}{5}\times \frac{22}{7}t=1.887\\t=1.887\times \frac{5}{2}\times \frac{7}{22}\\=1.501\\\approx 1.50 \,\,minute

So, the person will be 24 metres above the ground after 1.50 minutes

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3 years ago
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