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Semenov [28]
3 years ago
9

The area of a circle is 78.5 cm2. What is the diameter of the circle?

Mathematics
2 answers:
Svetllana [295]3 years ago
6 0
Your answer is 157, i'm pretty sure


kirill115 [55]3 years ago
5 0
Hello : 
The area of a circle is : A = <span>π × r² 
r² = A/</span><span>π 
r² = 78.5/3.14
r² = 25
r = 5
but : d = 2r    ... r : ridus and  d : </span><span>the diameter
so : d= 10</span>
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Natasha_Volkova [10]
Plug 4 for x and solve.

y = -3/4 * 4 + 3

y = -12/4 + 3

y = -3 + 3

y = 0

So the missing coordinate is 0.
8 0
3 years ago
The value of 2x + 2y, for x = 7 and y = 3, is 50.<br><br> True<br> False
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2x+2y =50
2(7)+ 2(3)=50
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5 0
3 years ago
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a wildlife photographer photographs a crocodile and then paddles against a river current for 6 km. Then, hoping to photograph a
rusak2 [61]

Answer:

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Step-by-step explanation:

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<u>Time in the river:</u>

  • 6/(x - 2)

<u>Time in the lake:</u>

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<u>The difference:</u>

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Solve for x to find the speed of the boat

<u>Multiply both sides by x(x - 2) to clear the fraction:</u>

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4 0
3 years ago
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Liono4ka [1.6K]

Answer:

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Step-by-step explanation:

From the above question , we are told that:

The relationship between the length and weight of certain sea turtles can be approximated by the equation

L = 0.55 W,

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L is the length in feet

W is the weight in pounds. If a sea turtle is 2.5 feet long, which is closest to its weight?

L = 2.5 feet

Hence,

2.5 = 0.55W

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5 0
3 years ago
I really need help here I don’t know how to do this
sattari [20]

Answer:

Second box for Justifications: Subtraction Property of equality

Third box for steps: \frac{2}{3} y=-6

Fourth box for steps: \frac{2}{3} y*\frac{3}{2} =-6*\frac{3}{2}

Fourth box for Justifications: Multiplication Property of equality

Fifth box for steps: y=-9

7 0
3 years ago
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