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3 years ago

PLEASE HELP!

Mathematics

1 answer:

Degger [83]3 years ago

7 0

Answer:

Perimeter = 21.58 units

Step-by-step explanation:

Perimeter of a polygon = Sum of measures of all sides of the polygon

Perimeter of the quadrilateral LEAP = PL + AE + EL + LP

= 4.47 + 4.47 + 6.32 + 6.32

= 21.58 units

[If the distances between two point are not given, use the formula to calculate the distance between two points $(x_1, y_1)$ and $(x_2,y_2)$

Distance = $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$ ]

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Kylie earned $382.20 at her job when she worked for 21 hours. What was her hourly wage, in dollars per hour? On the double numbe

Ksju [112]

Answer: $18.20 per hour

Explanation: $382.20 (total money earned in the span of 21 hours) divided by 21 (hours worked), this will give you the amount of money Kylie earned per hour.

4 0

3 years ago

Find the area of circle having 176cm circumference.With step by step explanation.plz

Olin [163]

Answer:

$\huge\boxed{A=784\pi\ cm^2\approx2464\ cm^2}$

Step-by-step explanation:

The formula of a circumference of a circle:

$C=2\pi r$

r - radius

The formula of an area of a circle:

$A=\pi r^2$

r - radius

We have C = 176cm. Substitute to the formula and calculate the radius r:

$2\pi r=176\qquad|\text{divide both sides by}\ 2\pi\\\\r=\dfrac{176}{2\pi}\\\\r=\dfrac{88}{\pi}\qquad|\text{use}\ \pi\approx\dfrac{22}{7}\\\\r=\dfrac{88}{\frac{22}{7}}\\\\r=88\cdot\dfrac{7}{22}\\\\r=4\cdot7\\\\\boxed{r=28(cm)}$

Calculate the area:

$A=\pi\cdot28^2=784\pi\approx784\cdot\dfrac{22}{7}=112\cdot22=2464(cm^2)$

According to the moderator, I should take $\pi\approx3.14$ . You can do it like that. In my opinion, my solution is correct.

6 0

3 years ago

The width of a rectangle is two cm less than 8 times the length. The perimeter is 88 cm. What is the width and length of the rec

kati45 [8]

Let's the length to be x,

then the width is 8x - 2.

Perimeter of a rectangle = 2*Width + 2*Length

Perimeter of the rectangle = 2(8x-2) + 2x = 16x - 4 + 2x = 18x - 4

Ar the same time, Perimeter of the rectangle = 88.

So, we can write

18x - 4 = 88

18x = 84

9x=42

x= 42/9 cm (length) or ≈ 4.67 cm (length)

8x - 2 = 8*42/9 - 2 ≈ 35.33 cm (width)

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4 years ago

The surface area of this cube is 864 square yards. What is the value of q?

earnstyle [38]

Answer:

Volume

512

cubic feet

Explanation:

A cube has

faces all with equal area.

If the total surface area of the cube is

384

sq.ft.

then each face has an area of

384

sq.ft.

Each face of a cube is a square and if we denote the length of an edge as

then the area of a face (in this case

sq.ft.) is equal to

XXX

sq.ft.

XXX

→

sq.ft.

The volume of a cube with edges of length

In this case

Volume

512

sq.ft.

Hope i helped

4 0

3 years ago

A) Work out the value of 213 + (29)2

Alina [70]

a) 2^13 / 2^18

b) 216

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3 years ago