Area of a rectangle is A = L*W.
Here, A = 56 cm^2 (not 56 cm).
= (56 cm^2)=( L )( W ) = (x+2)*(2x-5) = 2x^2 - 5x + 4x - 10
Simplifying, 2x^2 - 5x + 4x - 10 = 56, or 2x^2 - x - 66 = 0.
Solve this using the quadratic formula:
-(-1) plus or minus sqrt ( (-1)^2 - 4(2)(-66) )
x = -------------------------------------------------------------
2(2)
Finish the work: find x. Most likely you will need to check both of the roots. Keep in mind that x will likely be a positive number.
The price of car is $18000
Step-by-step explanation:
Given
Sales tax on car = $1080
Rate = 6%
Let x be the price of the car
We know that as the rate of sale tax is 6%, 6% of x is 1080
Using mathematical notation
0.06x = 1080
Dividing both sides by 0.06
Hence,
The price of car is $18000
Keywords: Rate of tax, Percentage
Learn more about percentae at:
#LearnwithBrainly
I think it's equal to 4, It sounds the most likely
Answer:
y = 3x + 5
Step-by-step explanation:
slope intercept form is y = mx + b where m is the slope and b is the y intercept.
b = 5
m = rise over run or (y2 - y1)/(x2 - x1)
m = (8-5)/1 -0
m = 3
thus, the equation of the line is:
y = 3x + 5
Answer is 14
Step-by-step explanation:using the formulae Area =1/2{half }×b{base}×h{height) ....
'b'-7cm is the base
'H'-4cm is the height
Area =1/2× 7×4