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Stolb23 [73]
3 years ago
10

I need you To reply To This question I need numbers 14-17

Mathematics
1 answer:
slava [35]3 years ago
3 0
The area of a circle is:
\pi \times r \times r
"r" being the radius and π being 3.14
14. The diameter is 12. So, to get the radius, we would need to halve it. So, the radius would be 6.
Now we plug in 6 for r and 3.14 for π which makes it
3.14 \times 6 \times 6
which equals 113.04
15. The diameter is 9, so to get the radius we need to halve it to get 4.5
Plug in 4.5 for r and 3.14 for π and we get
3.14 \times 4.5 \times 4.5
which equals 63.585
16. The diameter is 18, so to get the radius we need to halve it to get 9
Plug in 9 for r and 3.14 for π and we get
3.14 \times 9 \times 9
which equals 254.34
17. The diameter is 8, so to get the radius we need to halve it to get 4.
Plug in 4 for r and 3.14 for π and we get

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Answer: C=2*3.14*r

Step-by-step explanation:

You just plug in 3.14 for pi, it's pretty simple

7 0
3 years ago
I forgot how to convert the inequalities so if someone could please help me that would be great!
jeyben [28]

WHEN GRAPHING

Step 1. Convert to y = mx + b

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  • Equation 2: y = -5 - 2x

Step 2. Graph like normal

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  • Find y-intercept & plot

Step 3. Shade as indicated by the inequality symbol

  • > or ≥ = above line
  • < or ≤ = below line

Step 4. If  ≤ or ≥ ONLY, then also shade the line

FOR THIS PROBLEM

1. Graph each equation

2. Shade ABOVE line for each

3. Shade line first equation as well

Hope this helps and God bless!

4 0
2 years ago
Write the standard form of the quadratic equation modeled by the points shown in the table below.
Andre45 [30]
We know that

The Standard Form<span> of a </span>Quadratic Equation<span> is
</span> ax²<span> + bx + c = 0
</span>
then 
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 a*0² + b*0 + c = -6---------> c=-6

for x=1    y=2
 a*1² + b*1 -6 = 2---------> a+b=8---------> a=8-b---------> equation 1

for x=3    y=-0
 a*3² + b*3 -6 = 0---------> 9a+3b=6---------> equation 2

<span>substituting 1 in 2
9*(8-b)+3b=6------> 72-9b+3b=6---------> 6b=66--------> b=11
a=8-11-------> a=-3
so
a=-3
b=11
c=-6
</span>Standard Form of a Quadratic Equation is
 -3x² + 11x - 6 = 0
<span>
the answer is
</span> -3x² + 11x - 6 = 0<span>

</span>
6 0
3 years ago
Read 2 more answers
Can anyone help me convert this to standard form? It can’t have decimals or fractions.
Allisa [31]
Find b of y = mx + b first using a modified version of the equation.

b = y - mx
b = -1 -(1.2×-3)
b = 13/5 = 2.6

y = 1.2x + 2.6 ← result of substituting values of m and b into y = mx + b

-1.2x + y = 2.6 ← result of subtracting 1.2x from both sides

12x - 10y = -26 ← result of multiplying previous equation by -10

6x - 5y = -13 ← result of dividing previous equation by 2

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5 0
3 years ago
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masya89 [10]
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5 0
3 years ago
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