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2 years ago

Evaluate each expression.

Mathematics

1 answer:

Airida [17]2 years ago

3 0

1) 8 + 10 = 18
2) f / d
3) 8 + 7
4) 2 x 5

I hope this helps! Sorry if I did it incorrectly! ❤️ Have a nice day!

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If the ratio of the sides of two squares is 3:1, what is the ratio of their perimeters?

Anvisha [2.4K]

Answer:

Ratio of the perimeters =3:1

Step-by-step explanation:

We have given that : Ratio of the sides of two squares is 3:1

To find : Ratio of their perimeters

Solution : Let the length of the sides are 3:1 = 3x : x

Formula of perimeter of square = 4(side)

Using the formula ,

Perimeter of 1 square = 4×3x= 12x

Perimeter of 2 square = 4×x= 4x

Ratio of the perimeter of 1 square and 2 square = 12x : 4x

= 3 : 1

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3 years ago

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Step-by-step explanation:

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3 years ago

In a sale the price of a sofa a reduced from £2500 to £1840 what is the percentage decrease

11111nata11111 [884]

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Answer:

26.4% decrease

Step-by-step explanation:

The amount of change is ...

2500 -1840 = -660

As a percentage of the original price, that is ...

-660/2500 × 100% = -26.4% . . . . . negative change = decrease

The decrease is 26.4%.

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2 years ago

Maureen earned some money doing odd jobs last summer and put it in a savings account that earns 9% interest compounded quarterly

ivolga24 [154]

Answer:

Maureen earned $123.19 doing odd jobs

Step-by-step explanation:

The compound interest formula is given by:

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

Where A(t) is the amount of money after t years, P is the principal(the initial sum of money), r is the interest rate(as a decimal value), n is the number of times that interest is compounded per unit year and t is the time in years for which the money is invested or borrowed.

In this question:

Compounded quarterly means that $n = 4$