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SVETLANKA909090 [29]
3 years ago
9

A circular window has a diameter of 20 inches. What is the area of the window?

Mathematics
1 answer:
mojhsa [17]3 years ago
4 0

Answer:

62.8

Step-by-step explanation:

20 x П =

20 x 3.14 = 62.8

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6x^2 + 23x + 7 NEED HELP SOLVING QUADRATIC EQUATION
luda_lava [24]

Answer:

6x2 + 23x + 7 = 0

Factorization:

(2x + 7)(3x + 1) = 0

Solutions based on factorization:

2x + 7 = 0   ⇒   x1 = −7

2

= −3.5

3x + 1 = 0   ⇒   x2 = −1

3

≈ −0.333333

Extrema:

Min = (−1.916667, −15.041667)

Step-by-step explanation: hope this helps

6 0
3 years ago
What are benefits of good study habits? Check all that apply.
Ymorist [56]

Answer:

1, 3, 4 i hope this helps ;)

Step-by-step explanation:

5 0
3 years ago
HELP 100 POINTS The population of a city is modeled with the function P=250,000e^0.013t​, where t is the number of years since 2
erma4kov [3.2K]
Pretty difficult problem, but that’s why I’m here.
First we need to identify what we’re looking for, which is t. So now plug 450k into equation and solve for t.
450000 = 250000e^0.013t
Now to solve this, we need to remember this rule: if you take natural log of e you can remove x from exponent. And natural log of e is 1.
Basically ln(e^x) = xln(e) = 1*x
So knowing this first we need to isolate e
450000/250000 = e^0.013t
1.8 = e^0.013t
Now take natural log of both
Ln(1.8) = ln(e^0.013t)
Ln(1.8) = 0.013t*ln(e)
Ln(1.8) = 0.013t * 1
Now solve for t
Ln(1.8)/0.013 = t
T= 45.21435 years
Now just to check our work plug that into original equation which we get:
449999.94 which is basically 500k (just with an error caused by lack of decimals)
So our final solution will be in the 45th year after about 2 and a half months it will reach 450k people.
6 0
1 year ago
Which equation is incorrect if x =0 <br><br>1. 9x-3x-4 <br><br>2. 12x-4 <br><br>3. 5x+x-4
diamong [38]
They’re all -4 ,, what exactly are you asking ?
6 0
3 years ago
. If the volume of the pyramid is 12 cubic inches,<br>what is the height of the pyramid, in inches?​
Firdavs [7]

Answer:

well it can be 3 theres many answers

Step-by-step explanation:

3x3x3

5 0
3 years ago
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