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2 years ago

The price of a item has dropped to $91 today. Yesterday it was $130. Find the percentage decrease.

Mathematics

1 answer:

Inga [223]2 years ago

6 0

That would be a 30% Decrease.

Here is how I found the answer:

Step 1: Find the difference between the two numbers by using this formula: Original Number - New number = Decrease.

Step 2: Divide the decrease by the original number and then multiply your answer by 100 by using this formula: Decrease / Original Number = % Decrease.

Now you can use these formulas to find any percentage decrease between two numbers.

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3 years ago

So, A, B, D, or C???

allsm [11]

Answer:

Step-by-step explanation:

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3 years ago

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Adam wishes to have $20 comma 000 available in 18 years to purchase a new car for his son as a gift for his high school graduat

wel

Adam should invest $15516 after 18 years.

Explanation:

Given:

Amount(18) = $20000

Rate of Interest, r = 1.41%

Time, t = 18 years

n = 365 (compounded daily)

General equation of amount that is compounded daily:

$A(t) = A_0(1 + \frac{r}{n} )^n^t$

Solving for A₀:

$A_0 = \frac{A(t)}{(1+\frac{r}{n} )^n^t}$

Substituting the values:

$A_0 = \frac{20000}{(1 + \frac{0.0141}{365})^3^6^5^X^1^8 } \\\\A_0 = \frac{20000}{1.289}\\ \\A_0 = 15516$

Therefore, Adam should invest $15516 after 18 years.

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2 years ago

Which expressions result in a positive number?

Anon25 [30]

Expression B results in a positive number

Cheerios

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3 years ago

AI Prove that: 1-cOS A V1+cos A cosec A-cot A

Katyanochek1 [597]

Answer:

(1-cosA)/(1+cosA)

=(1-cosA)/(1+cosA) ×(1-cosA)/(1-cosA)

=(1-cosA)^2 /(1-cos^2A)

=(1-cosA)^2 / (sin^2A)

=(1/sinA - cosA/sinA )^2

=cosecA - cotA)^2

Hope it helps

Have a great Day ; )

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2 years ago

Read 2 more answers