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Gekata [30.6K]
2 years ago
6

Cynthia's grandpa says that his first simple calculator cost $80. Cynthia knows she just bought a new calculator for $4. What is

the percent decrease in the price of a calculator?
Mathematics
1 answer:
kykrilka [37]2 years ago
8 0

Answer:

95%

Step-by-step explanation:

Difference / Original x 100

76/80 x 100

95%

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Seattle, wa and san francisco, ca lie on the same longitudinal line. san francisco is at 38° latitude and seattle is at 47° lati
Varvara68 [4.7K]

Step 1.

Calculate measure of angle α:

47^o-38^o=9^o

Step 2.

Calculate what fraction of the angle 360° ​​is the angle α:

\dfrac{9^o}{360^o}=\dfrac{1}{40}

Step 3.

Calculate the circumference of the Earth (circle):

C=2\pi r\to C=2\pi\cdot4000=8000\pi\ mi

Step 4.

The length of arc is equal 1/40 of the circumference:

\dfrac{1}{40}C=\dfrac{1}{40}\cdot8000\pi=200\pi\ mi

\pi\approx3.14\to\dfrac{1}{40}C\approx200\cdot3.14=628\ mi


<h3>Answer: A) 628 miles</h3>

8 0
3 years ago
Victoria has 2.50 pounds of bell peppers and the cost is $1.25. What is the price for 1 pound of bell peppers?
AleksAgata [21]

Answer:

The price of one pound of bell peppers is $0.6.

Step-by-step explanation:

This problem is equivalent to the following:

<em>"if 10 oranges cost $20, how much does 1 orange cost? "</em>

and the answer to that question is:

price of 1 orange  = $20/ 10 oranges = $2 per orange.

Put simply, we divided the total price by the total number of items, and we shall do the same thing for the case of bell peppers:

price of 1 pound  = $1.25/ 2.5 pounds = $0.5/ pound.

The price for 1 pound of bell peppers is $0.5.

8 0
3 years ago
What is the answer to 14x-7=133?
e-lub [12.9K]

Answer:

x = 10

Step-by-step explanation:

Given

14x - 7 = 133 ( add 7 to both sides )

14x = 140 ( divide both sides by 14 )

x = 10

7 0
3 years ago
How is a 15% discount similar to a 15% decrease? Explain
VMariaS [17]
It's the same because you're trying to find net price (end price)

You're going to take in both scenarios 100%-15%= 85%

You're always going to be paying only 85% of the price.
8 0
3 years ago
Read 2 more answers
A piece of green rope is being used to make a border around the outside of a sculpture that is in the shape of an equilateral tr
damaskus [11]

Answer:

The equivalent expressions are;

9x + 9

and

9(x + 1)

Step-by-step explanation:

Mathematically, we should understand that an equilateral triangle has all of its sides equal

So if one side is 3x+ 3, the other sides too measures same

Therefore, the length of the rope represents the perimeter of the triangle

This is obtainable by adding all the side lengths together

This will be;

3x + 3 + 3x + 3 + 3x + 3 = 9x + 9

This is also same as 9(x + 1)

5 0
3 years ago
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