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11Alexandr11 [23.1K]
2 years ago
9

The price of an item has dropped to $34 today. Yesterday it was $40. Find the percentage decrease.

Mathematics
1 answer:
RoseWind [281]2 years ago
6 0
15% decrease.
Explanation:
10% of 40 is $4 so another 5% is $2. So 15%
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By the end of the round 3 of the handshaking activity in the Epidemiology Lab, eight people are infected (of the twenty four peo
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Answer:

d. (16/24) * 100%

Step-by-step explanation:

The infection rate =( Number of infected people/ total number of people) *  100%

After the end of round 3

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After the end of round 4, since no one is infected more than once

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3 years ago
Which fraction has a terminating decimal?<br> - 11/19<br> - 4/7<br> - 1/3<br> - 3/150
babunello [35]
<h3>Answer: D) 3/150</h3>

==========================================================

Explanation:

With the use of a calculator, we see that,

  • 11/19 = 0.57894736842106...., the decimals eventually repeat; but unfortunately my calculator ran out of room to show the repeating portion
  • 4/7 = 0.5714285714285714..., the block "571428" repeats forever
  • 1/3 = 0.333333.... the 3s go on forever
  • 3/150 = 0.02

So 3/150 converts to the terminating decimal 0.02

The word "terminate" means "stop". In the other decimal values, the decimal digits go on forever repeating the patterns mentioned.

----------------------

A non-calculator approach will have us simplify 3/150 into 1/50 after dividing both parts by the GCF 3. Then notice how 50 has the prime factorization of 2*5*5. The fact that the denominator 50 can be factored in terms of only 2's and 5's is enough evidence to conclude that the fraction converts to a terminating decimal.

If the denominator factors into some other primes, other than 2s and 5s, then we don't have a terminating decimal. So that's why 11/19, 4/7 and 1/3 convert to non-terminating decimals.

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2 years ago
Jenny drew a figure in art class. Does it have rotational symmetry? If yes, what is the angle of rotation.
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Answer:

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Step-by-step explanation:

Jenny drew a figure in art school and the figure is shown in the attached diagram.  

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6 0
3 years ago
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Answer:

A=SqRt(c^2-b^2)

Step-by-step explanation:

a^2 + b^2 = c^2

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take the square root of each side

a= square root (c^2-b^2)

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2 years ago
For every 2 gallons of vanilla ice cream a shop sells, they sell 11 gallons of chocolate ice cream. If they sell 16 gallons of v
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