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3 years ago

Find the area of the polygon

Mathematics

1 answer:

Natali [406]3 years ago

5 0

Answer:

20 cm^2

Step-by-step explanation:

Sectioned it off and multiplied the length by the width

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Paisley earned $384.30 at her job when she worked for 21 hours. How much money did she earn each hour?

frozen [14]

Answer:

18.3

Step-by-step explanation:

384.3 divided by 21

8 0

2 years ago

Order the numbers from least to greatest -3/4, -4/15, -2/5

barxatty [35]

Answer:

-3/4, -2/5, -4/15

Step-by-step explanation:

using calculator, -3/4 = -0.75, -4/15 = -0.266666..., -2/5 = -0.40

imagine that -0.75, -0.26... and -0.40 are temperatures

the coolest temperature is -0.75, the warmest one is -0.26...

so the least number is -0.75, greater -0.40 and the greatest -0.26...

4 0

2 years ago

Use the quadratic formula to solve the equation <br> 25x^2-30x+25=0

Reika [66]

Answer: $x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}$

Step-by-step explanation:

$25x^2-30x+25=0$

$x_{1,\:2}=\frac{-\left(-30\right)\pm \sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}}{2\cdot \:25}$

$\sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}$

$=\sqrt{30^2-4\cdot \:25\cdot \:25}$

$=\sqrt{30^2-2500}$

$=i\sqrt{2500-30^2}$

$=40i$

$x_{1,\:2}=\frac{-\left(-30\right)\pm \:40i}{2\cdot \:25}$

$x_1=\frac{-\left(-30\right)+40i}{2\cdot \:25},\:x_2=\frac{-\left(-30\right)-40i}{2\cdot \:25}$

$x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}$

8 0

2 years ago

Let p be the greatest prime factor of 9991. The sum of the digits of p is?

Dovator [93]

Answer:

Step-by-step explanation:

9991 = 97×103

The greatest prime factor of 9991 is 103. The sum of digits of 103 is 1+0+3 = 4.

5 0

2 years ago

The difference between two positive integers is 54. One integer is three times as great as the other. Find the integer

sveta [45]

The answer is 27
27+54=81 and 27x3= 81
:)

7 0

2 years ago