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3 years ago

PLEASE OKEAZE OLEASE HELP write a expression that represents the area of a circle with a radius of 7 units?

Mathematics

1 answer:

Rashid [163]3 years ago

4 0

Answer:

$A=\pi (7)^2=153.94\ unit^2$

Step-by-step explanation:

Area of the Circle: The area of the circle of radius $r$ is given by $\pi r^2$ .

$Here\ r=7\\\\A=\pi (7)^2\\\\A=\pi\times 49\\\\A=49\pi\\\\A\approx 153.94\ unit^2$

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Please answer also if you answer this one please answer my other one it basically the same

lianna [129]

Answer:

D is the correct answer.

Step-by-step explanation:

<em>Step 1: Write the data</em>

Total number of songs = 100

Total ratio = 1

Total percentage = 100%

Ratio of jazz songs = 1/4

Percentage of jazz songs = 1/4 x 100 = 25%

Ratio of pop songs = 1 - 1/4 = 3/4

Percentage of pop songs = 3/4 x 100 = 75%

<em>Step 2: Match the statement.</em>

The correct statement is D; 25% are Julian's songs are jazz because 1/4 = 25/100 and 75% are pop because 3/4 = 75/100.

5 0

2 years ago

Esitmate 242 PLEASEEEEEEEEE I NEED THIS

horsena [70]

Answer:

im confused lol ill editthis once you give me the full thing

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Solve both questions please ❤️❤️

harina [27]

Answer:

1. y=7.2

2. x=18

Step-by-step explanation:

1. Triangles CMN and CBA are similar triangles (by AAA postulate). Similar triangles have proportional corresponding sides, so

$\dfrac{CM}{CB}=\dfrac{CN}{CA}\\ \\\dfrac{12}{12+y}=\dfrac{10}{10+6}\\ \\12\cdot 16=10\cdot (12+y)\\ \\192=120+10y\\ \\10y=72\\ \\y=7.2$

2. GK is angle G bisector. Use angle bisector's property:

$\dfrac{GH}{GI}=\dfrac{KH}{KI}\\ \\\dfrac{40}{24}=\dfrac{30}{x}\\ \\40x=24\cdot 30\\ \\4x=24\cdot 3\\ \\x=6\cdot 3=18$

8 0

2 years ago

Michelle’s house is 22 miles due north of Jan’s house and 30 degrees northeast of Richard’s house. Richard’s house is due east o

tensa zangetsu [6.8K]

Answer:

Michelle’s house is 44 miles to Richard’s house.

Step-by-step explanation:

The distance can be found out by using the trigonometric ratio of sine theta

Sine theta= Perpendicular/ Hypotenuse

We know the values of hypotenuse and theta

Sine 30 = 22/ Hypotenuse

Hypotenuse= 22/ sine 30

Hypotenuse= 22/0.5

Hypotenuse = 44

The hypotenuse marks the distance between Michelle’s house to Richard’s house. Due east means counter clockwise rotation from east.

3 0

2 years ago

Katy recently hired a contractor to do some necessary work. On the final bill, Katy was charged a total of $488. $260 was listed

svetlana [45]

Answer:

(A) $260 + $57x = $488

(B) 4 hours

Step-by-step explanation:

(A) We need to find out how many hours of labor he needed to complete the job. That's what the x will represent.

We know that he charged Katy for the parts and for the labor, with an hourly rate of $57.

We need to sum the amount of money he charged for the parts with the hourly rate multiplied by the number of hours he worked.

Let's notice that we multiply the number of hours just to the hourly rate, the price of the parts doesn't depend on how many hours he worked.

That is $260 + $57*x

We know that the total was $488, so we just need to equal the expression before to the total.

$260 + $57x = $488

That's the expression we were looking for.

(B) Let's solve the equation. We need to leave the x alone on one side of the equation.

First, let's subtract $260 on both sides:

$260 + $57x - $260 = $488 - $260

$57x = $228

Now we divide by $57 on both sides:

$57x/$57 = $228/$57

x = 4

He needed 4 hours to do the job.

4 0

3 years ago