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3 years ago

Please help! I have no idea what to do. I couldn't even guess an answer.

Mathematics

1 answer:

yulyashka [42]3 years ago

4 0

y - y1 = m(x - x1)

Plug in:

Slope = m = 4

Point = (x1,y1) ----> (-3,7)

y - 7 = 4(x - -3) //Solve for y

y - 7 = 4(x + 3) //Answer

y - 7 = 4x + 12

y = 4x + 12 + 7

y = 4x + 19

Answer: B

//Hope it helps

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Please help! (19 Points!)

Ivenika [448]

Answer:I’m. It sure it depends on if you’re supposed to round or not

Step-by-step explanation:

9.6 / 8 = 1.2

9 / 7.5 = 1.2

However 7.8 / 6.2 = 1.2580

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3 years ago

What are the center and radius of the circle defined by the equation ?

RUDIKE [14]

You didn't give us the equation, but circle equations are in the form;
(x-h)^2 + (y-k)^2 =r^2 where h and k are the x and y coordinate of the center and r is the radius of the circle squared.

7 0

3 years ago

Mr. Neville Iceguy mixed up 12 3/5 gallons of chili for a party. If 7 3/4 gallons of chili was mild, and the rest was extra spic

mihalych1998 [28]

Answer:

$4\frac{17}{20}$

Step-by-step explanation:

We have been given that Mr. Neville Iceguy mixed up 12 3/5 gallons of chili for a party. 7 3/4 gallons of chili was mild.

To find the amount of extra spicy chili, we will subtract amount of mild chili from total chili as:

$12\frac{3}{5}-7\frac{3}{4}$

Convert mixed fraction into improper fraction:

$12\frac{3}{5}\Rightarrow \frac{12\times 5+3}{5}=\frac{60+3}{5}=\frac{63}{5}$

$7\frac{3}{4}\Rightarrow \frac{7\times 4+3}{4}=\frac{28+3}{4}=\frac{31}{4}$

$12\frac{3}{5}-7\frac{3}{4}\Rightarrow\frac{63}{5}-\frac{31}{4}$

Make a common denominator:

$\frac{63*4}{5*4}-\frac{31*5}{4*5}$

$\frac{252}{20}-\frac{155}{20}$

Combine numerators:

$\frac{252-155}{20}$

$\frac{97}{20}$

$4\frac{17}{20}$

Therefore, Mr. Iceguy made $4\frac{17}{20}$ gallons of extra spicy chili.

3 0

3 years ago

A group of 72 children completed a survey on what kind of sport they like. The choices were: Chess, Swimming, and Football. Ever

Andrew [12]

Answer:

see below

Step-by-step explanation:

Let C = chess

S = swimming

F = football

x = football only

y = all three sports

z = swimming only

x+y+ 8+12 = 32 those who like football

y+z+8+16 = 40 those who like swimming

7+x+8+y+12+10+16+z = 72 all children

Simplifying these equations

x+y = 32-20 = 12

y+z = 40-24 = 16

x+y +z = 72-53 = 19

Substituting x+y = 12 into the last equation

12 +z = 19

z = 7

y+z = 16

y = 9

x+y =12

x =5

Swimming only is 7

Football only is 5

Swimming and football y+8 = 9+8 = 17

P( chess or swimming but not football) = (10+16+z)/ total

=(10+16+7)/ total

=33/72

P( no active sport) = chess only or no sport/total

=(10+7)/72

5 0

4 years ago

A solid metallic sphere of radius 7 cm is cut into two halves. Find the total surface area of the two hemisphere

svetoff [14.1K]

Here,
A sphere has 7cm radius
And it’s cut into tow half (2 hemispheres)
So, the radius of a hemisphere is also 7cm
Now,
TSA of hemisphere = 3 pie r^2
=3*22/7*7^2
=3*22/7*49
=3234/7
=462cm^2
Lastly,
The TSA of 2 hemispheres = 2* 462
=924cm^2

Hence,
The total surface area of the 2 hemisphere is 924cm^2

7 0

3 years ago