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Shkiper50 [21]
2 years ago
12

A $280 suit is marked down by 30%. Find the sale price. The sale price is $

Mathematics
2 answers:
storchak [24]2 years ago
3 0

Answer:

84

Step-by-step explanation:

30% * $280

\frac{}{100}

= 84

So, the sale price is $84

umka21 [38]2 years ago
3 0

Answer:

186

Step-by-step explanation:

.7×280.............................

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scZoUnD [109]
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A musical instrument has a pitch of 220 hertz when the wavelength is 3 feet. When the wavelength is 4 feet, the pitch is 165 her
earnstyle [38]
We know that
Inverse Variation is a<span> relationship between two variables in which the product is a constant
so
let
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y------> </span><span>the wavelength
x*y=k

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for x=</span><span>220 hertz   y=3 ft
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4 0
3 years ago
R=x^2/y <br> x=3.8 times 10^5 <br> y=5.9 times 10^4 <br> work out the value of r
Zinaida [17]

Answer:

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Step-by-step explanation:

Put the numbers where the variables are and do the arithmetic. You can enter the numbers in scientific notation into your (scientific) calculator and have it show you the result in the same format.

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Please note that in the above expression, parentheses are required around the denominator number. This is because it is a product of two numbers. In your pocket calculator or spreadsheet, you can enter that value as a single number (not a product). Parentheses are not required when you can do that.

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___

The "exact" value is a repeating decimal with a long repeat. We have rounded to 2 significant digits here because the input numbers have that number of significant digits.

7 0
3 years ago
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Answer:

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Step-by-step explanation:

4 0
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