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4 years ago

HELPPPPPPPPPPPPPPPPPPPPP

Mathematics

2 answers:

jonny [76]4 years ago

6 0

Let GB = gas Bill
Let Temperature = T

GB = k * T
GB = 20 dollars
T = 5 degrees F
20 = k * 5 divide by 5
20/5 = k
k = 4

Start again.
T = 9
k = 4
GB = ??

GB = k T
GB = 4 * 9
GB = 36 [Get a wood stove!!!]

B <<<< answer

Tamiku [17]4 years ago

4 0

$20/5 is $4, so for every increase in temperature, it's 4 (1°=$4). So 9*4=36. So your answer is B.

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I need the written form for 293,805

yan [13]

Two hundred ninety three thousand eight hundred and five

5 0

3 years ago

The length of a rectangle is four times its width. If the area of the rectangle is 324m^2, find its perimeter.

Anuta_ua [19.1K]

Answer:

$perimeter=90$

Step-by-step explanation:

We know that the length is four times the width, so:

$l=4w$

We also know the area, which is 324 m². The formula for area:

$A=l*w$

Insert the known values:

$324=(4w)*w$

Solve for w. Simplify by removing parentheses:

$324=4w*w\\324=4w^2$

Divide 4 from both sides to isolate the variable:

$\frac{324}{4}=\frac{4w^2}{4} \\\\81=w^2$

Find the square root of both sides:

$\sqrt{81} =\sqrt{w^2} \\\\w=9$

The width is 9 m.

We know the width. Now find the length by using the area formula and inserting known values:

$324=l*9$

Solve for l. Divide both sides by 9:

$\frac{324}{9}=\frac{l*9}{9}\\\\ l=36$

The length of the rectangle is 36. (You can check: 4 times 9 is 36)

Now find the perimeter:

$P=2l+2w$

Insert values:

$P=2(36)+2(9)\\\\P=72+18\\\\P=90$

The perimeter is 90 m.

5 0

3 years ago

Topic : Bounds<br> Website :Mathswatch

leva [86]

Answer:

C= 7.6761229314

Step-by-step explanation:

the formula is c=d/p

d= 324.7

p= 42.3

so ... this is how to calculate...

C = 324.7 km/ 42.3 litres

I hope it can help. thanks

8 0

2 years ago

What is the recursive formula for -7,-1,5,11

Lostsunrise [7]

-1 - (-7) = 6
5 - (-1) = 6
11 - 5 = 6
The common difference is 6.
If you add 6 to a term, you get the next term.

$a_0 = -7$

$a_n = a_{n - 1} + 6$

3 0

3 years ago

I need help ASAP!!Please explain how to solve the problem

rjkz [21]

Answer:

( x - 2 )^2 + ( y - 1 )^2 = 1

Step-by-step explanation:

As i previously explained,

The general form of equation for a circle is ( x - h )^2 + ( y - k )^2 = r^2.

h and k are the co-ordinates of the center of circle and r is the radius

Here, We have (2,1) as the co-ordinates of the center of circle

Now,

( x - h )^2 + ( y - k )^2 = r^2

or,( x - 2 )^2 + ( y - 1 )^2 = r^2

The radius of the circle is 1 units(from figure)

So, put that in, we get

( x - 2 )^2 + ( y - 1 )^2 = 1^2

or, ( x - 2 )^2 + ( y - 1 )^2 = 1

You can simplify this or leave it here.

8 0

3 years ago