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Roman55 [17]
3 years ago
11

The area of a circle is approximately 379.94 square inches. What is the diameter of the circle? [Use 3.14 as an approximation fo

r pi.] a0 inches

Mathematics
2 answers:
VladimirAG [237]3 years ago
7 0
The diameter would be 21.99. 

avanturin [10]3 years ago
4 0

Answer:

Diameter=22 inches

Step-by-step explanation:

It is given that The area of a circle is approximately 379.94 square inches, then using the formula for the area of the circle, we get

A={\pi}r^2

Substituting the given values, we have

379.94={\pi}r^2

⇒379.94=3.14r^2

⇒\frac{379.94}{3.14}=r^2

⇒r^2=121

⇒r=11

Now, the diameter of the circle is given as:

D=2r

Putting the value of r, we have

D=2(11)

⇒D=22 inches

Thus, the diameter of the circle is 22 inches.

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A jar contains 5 blue marbles, 8 red marbles, 4 white marbles, and 3 purple marbles. Suppose you pick a marble at random without
andreyandreev [35.5K]
P(purple)=3/20
P(white)=4/20=1/5
P(not blue)=15/20=3/4
5 0
3 years ago
If you help I give you brainilest
Pavlova-9 [17]

Answer:

|-213| > |+159|

Step-by-step explanation:

| means absolute value.

213 > 159

5 0
3 years ago
Suppose a plane flies 48 miles in 12 minutes. The relationship between miles flown, x, and minutes flown, y, by the plane can be
Zinaida [17]

Answer:

(A) 112 miles

Step-by-step explanation:

The plane flies 48 miles in 12 minutes. First, find out the amount of miles flown in 1 minute, by simplifying the fraction:

(48 miles)/(12 minutes) = (4 miles)/(1 minute)

The plane flies 4 miles every minute.

Now solve for the amount of area that plane covers in 28 minutes. Multiply 28 with 4:

4 x 28 = 112

(A) 112 miles is your answer.

~

8 0
3 years ago
Read 2 more answers
Sodium - 24 has a hourly decay rate of 5%
allsm [11]

Answer:

The amount of sodium- 24 remain after 90 hours of decay is 8.90 gram

Step-by-step explanation:

Given as :

The amount of sodium-24 = 900 gram

The decay rate of sodium is 5 %

The time period for its decay  = 90 hours

Final value of sodium -24 = initial value \times  (1 - \frac{Rate}{100})^{Time}

Or, Final value of sodium -24 = 900 gram \times  (1 - \frac{5}{100})^{90}

Or, Final value of sodium -24 = 900 g × (0.95)^{90}

Or,  Final value of sodium -24 = 900 g × (9.88)^{-3}

∴ Final value of sodium -24 = 8.899 gram

Hence The amount of sodium- 24 remain after 90 hours of decay is 8.90 gram    Answer

5 0
3 years ago
A child is flying a kite 145ft above the ground. The string makes an angle of 57 degrees from the child's hands. How much has be
Arturiano [62]

Answer: the length of string that been let out to fly the kite this high is 172.89 ft

Step-by-step explanation:

The length of string attached to the kite, the vertical height of the kite above the ground and the ground distance forms a right angle triangle.

With an angle of 57 degrees, the length of the string that is attached to the kite represents the hypotenuse of the right angle triangle.

The height of the kite above the ground represents the opposite side of the triangle

To determine h, the length of the string that has been let out to fly the kite this high, we would apply the

Sine trigonometric ratio which is expressed as

Sine θ = opposite side/hypotenuse

Sin 57 = 145/h

h = 145/Sin57 = 145/0.8387

h = 172.89

7 0
4 years ago
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