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zalisa [80]
2 years ago
13

Last one lol see picture.. will mark brainliest!!

Mathematics
1 answer:
sveta [45]2 years ago
8 0

Answer:

the second one

Step-by-step explanation:

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V= <img src="https://tex.z-dn.net/?f=v%3D%20%5Cpi%20r%20%5E%7B2%7D%20h%20%20for%20%20%202%20" id="TexFormula1" title="v= \pi r ^
swat32
V=\pi r^2h \\\\ r^2=\frac{V}{\pi h} \\\\ \boxed{r=\sqrt\frac{V}{\pi h}}
3 0
3 years ago
The equation of the line of best fit is y=3x+2. x=the number of ice cream sales and y= the number of days. Answer the following
Nina [5.8K]

Answer:

all I know is how to get y but y=122

Step-by-step explanation:

y=3(40)+2

y=120+2

y=122

sorry but I dont know what to do for x

3 0
2 years ago
What is the discriminant of 3x^2 - 10 = -2?
Tatiana [17]
The formula for the discriminant is b^2-4ac. The formula you wote is in the form of 
ax^2+c=0, so first, you need to bring that -2 to the left. When you do that, you get (the original equation would be ax^2+bx+c but you have no bx.)

3x^2-8

So, since there's no b, it would be
b^2-4ac
0^2-4(3)(-8
-12 x -8
96

7 0
2 years ago
I'm not sure how to do this please help
IgorLugansk [536]

Answer:

maria will run 1.75 more miles than her goal

Step-by-step explanation:

If you multiply 2.75 to 7 days you will get 19.25. And if you subtract it by 17.5(because that's her goal) you will get 1.75.

So the answer to this question would be:

Maria will run 1.75 more mile than her goal.

7 0
3 years ago
G. Write the equation of the line in slope-intercept form.
Neko [114]

Answer:

  • y= x-2
  • y = 4/5 x+39/5

Step-by-step explanation:

1.

(3,1) and\:perpendicular \:to \: y = -x+1\\(3,1) = (x,y)\\m = -1\\In\: perpendicularism ; m_2 = \frac{-1}{m_1} \\m_2 = \frac{-1}{-1} \\m_2 =1\\y = mx+c\\1 = 1(3) +c\\1=3+c\\1-3=c\\-2 =c\\Substitute \:new \:values\:into\\y =mx+c\\y = 1x -2\\y = x-2

2.

(-1,7) =(x_1,y_1)\\\\5y = 4x+5\\\\Write\:in\:y=mx+c\:form\\\frac{5y}{5} = \frac{4}{5} x + \frac{5}{5} \\y = \frac{4}{5} x +1\\m = \frac{4}{5} \\\\y -y_1=m(x-x_1)\\y-7=\frac{4}{5} (x -(-1)\\y -7 = 4/5(x+1)\\y -7 = 4/5x +4/5\\\\y = \frac{4}{5} x+\frac{4}{5} +7\\\\y = \frac{4}{5} x +39/5

6 0
2 years ago
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