Answer:
Step-by-step explanation:
we know that
The area of the circle is equal to
where
D is the diameter of the circle
Solve for D
That means-----> Isolate the variable D
Multiply both sides by 4 to remove the fraction
Divide both sides by π
square root both sides
Rewrite
Simplify
Well 1 cm = 2ft, so it might be asking the scale?
Answer:
4 and any number other than 4
Step-by-step explanation:
The first answer is 8. Solve the equation for x.
x-4 = 4-x
To get rid of the x on the right side, you must add x to both sides
(x) + x - 4 = (x) + 4 - x
On the right side x-x=0 so now you are left with 4 on the right side
On the left side x+x=2x so you have 2x-4 on the left side.
Now add 4 to both sides to get rid of the 4 on the left side.
(4) + 2x - 4 = (4) + 4
On the left side, 4-4=0 so you are left with 2x.
On the right side 4+4=8
So now you have 2x = 8. To finish solving for x, you now need to divide both sides by 2.
2x 8
---- = -----
2 2
On the left, 2 divided by 2 equals 1 so you are left with x.
On the right, 8 divided by 2 equals 4.
So now you know what X must equal 4 to make the equation TRUE.
Any number other than 4 will make the equation false.
Answer:
$2/mile
Step-by-step explanation:
Look at the graph. We see that two points on this line are (0, 2) and (9, 20).
The "run" is (9 - 0), or 9, and the "rise" is (20 - 2), or 18.
The slope of this yellow line is thus m = rise / run = (18 dollars) / (9 miles) = $2/mile
This slope of the yellow line is the incremental taxi fare per mile traveled and is speed of the car and is m = 2 mph.
Let they be x.
Cost of textbooks + laptops cant greater than total amount.
(cost of 1 textbooks * number of textbooks) + (cost of 1 laptop * number of laptops ≤ 6500
(30*116) + (x*439) ≤ 6500
3480 + 439x ≤ 6500
439x ≤ 3020
x ≤ 6.8(approx)
Last natural number is 6, says, they can buy 6 laptops at max.
