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anzhelika [568]
3 years ago
6

1a.) Write an expression that represents the area of a circle with a radius of 7 units? (1 point)

Mathematics
1 answer:
Tresset [83]3 years ago
6 0

Answer:

1. a.) A  = \pi r^{2} where the value of r = 7 units

  b.) A = \pi \times 7^{2}  = \pi \times 49 = 49\pi = 49\times 3.1414 = 153.93 units^2

Step-by-step explanation:

1.) a.) the area of a circle with a radius of 7 units

        is given by Area, A  = \pi r^{2} where the value of r = 7 units

    b)  \therefore   A = \pi \times 7^{2}  = \pi \times 49 = 49\pi = 49\times 3.1414 = 153.93 units^2

     

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Yuki888 [10]

Answer: x=

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Step-by-step explanation

240=12x+8y

Step 1: Flip the equation.

12x+8y=240

Step 2: Add -8y to both sides.

12x+8y+−8y=240+−8y

12x=−8y+240

Step 3: Divide both sides by 12.

12x

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=

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x=

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y

8 0
3 years ago
Scored 72 times out of 150 what percent of his shots did he score?
Sholpan [36]
Whoever scored 72 shots out of 150. Did, In fact, score 48% of their shots.
 
Solution:
*To calculate the percentage represented by a ratio simply divide the numerator by the denominator and multiply by 100. 

72:150 (72/150)

72/150 

= 0.48

0.48(100) = 48

... 48%
6 0
3 years ago
A person bought a water tank of circular base having the radius 1.05 meter and height 3.5 meter for the use of own house from th
Anastasy [175]

Answer:

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8 0
3 years ago
The graph represents the cost of a subscription to a newspaper. A coordinate plane showing Ferry Ride Cost with Number of Person
allochka39001 [22]

Answer:

The constant of variation is $1.50

Step-by-step explanation:

Given

Point 1 (1,2)

Point 2 (5,8)

Required

Constant of Variation

Though the graph would have assisted in answering the question; its unavailability doesn't mean the question cannot be solved.

Having said that,

the constant variation can be solved by calculating the gradient of the graph;

The gradient is often represented by m and is calculated as thus

m = \frac{y_2 - y_1}{x_2 - x_1}

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By substituting values for x1,x2,y1 and y2; the gradient becomes

m = \frac{8 - 2}{5 - 1}

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m = 1.50

Hence, the constant of variation is $1.50

7 0
3 years ago
Read 2 more answers
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Trava [24]
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3 years ago
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