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2 years ago

14

The ratio of the perimeter of two similar polygons is 5:7. The area of the smaller polygon is 30 sq. cm. Find the area of the la

rger polygon.

1 answer:

Debora [2.8K]2 years ago

4 0

Answer:

42sq

Step-by-step explanation:

5:7

30 sq: x sq

30/5=6 sq for 1 of the ratio

6*7=42 sq for 7 of the ratio

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A television normally costs 1420.Due to a store sale the television is now 1,022.40.What was the percentage taken off the televi

Zielflug [23.3K]

Cost of Television = $1420

Cost of Television after store sale =$1022.40

Drop in price= 1420-1022.40= 397.60.

Price taken off = $ 397.60.

Percentage taken off= $\frac{Difference }{original} x 100.$

= $\frac{397.60}{1420} x 100=28%.$

Percent off = 28%.

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2 years ago

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32) Find the value of 5x° + 2x-1 when x = 4.

SashulF [63]

Answer:

5x4°x7

Step-by-step explanation:

5x°+2x-1 when x =4

5x4°+2x4-1

5x4°+8-1

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3 years ago

Two integers, a and b have product of -48 what is the greatest possible sum of a and b.

dusya [7]

The factors of 48 are:
1 x 48
2 x 24
3 x 16
4 x 12
6 x 8
and visa versa: 48 x 1 etc.

To make the product negative, one of the factors has to be positive and one has to be negative. To find the greatest sum, make the bigger number the positive factor and the smaller number the negative factor. So, -1 x 48 = -48 and the sum of -1 + 48 = 47 which would be the greatest possible sum.

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3 years ago

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2 years ago

According to the rational root theorem, what are all the potential rational roots of f(x)=5x^3-7x+11

Genrish500 [490]

Answer:

$\pm11,\pm1,\pm\frac{11}{5},\pm\frac{1}{5}$

Step-by-step explanation:

The given polynomial function is

$f(x)=5x^3-7x+11$

According to the Rational Roots Theorem, the ratio of all factors of the constant term expressed over the factors of the leading coefficient.

The potential rational roots are

$\pm\frac{11}{1}=\pm11$

$\pm\frac{1}{1}=\pm1$

$\pm\frac{11}{5}$

$\pm\frac{1}{5}$

4 0

3 years ago