kpopsaranghae kpopsaranghae
  • 02-11-2018
  • Mathematics
contestada

The length and width of a rectangle are 7 cm and (x-8) cm respectively. Find the value of x if the area with of the rectangle is 42 cm squared.

Respuesta :

popholmes16 popholmes16
  • 02-11-2018

to find the area of a rectangle is LxW=A

plug in the given numbers you have

L = 7

W = x-8

A = 42

7 * x-8 = 42

7x-56= 42

solve for X

Answer Link

Otras preguntas

dominique and Juan are finding -3-14 who's correct? explain reasoning. what's the answer....to this I'm so confused. please someone clarify...
What is Iran doing to cause Donald trump to threaten there country on Twitter
PLEASE NEED HELP REALLY BAD
In addition to strong words and effective sentences, what other structural elements should writers strive for when crafting documents? consistency of ideas deno
Find the equation of the ellipse centered at the origin that satisfies the given conditions: foci on x-axis; x-intercepts +-10 y-intercepts +-5
There are 2.54 centimeters in 1 inch. How many centimeters are there in 1 foot? In 1 yard? Explain your reasoning.
State the range of possible values for x if (3x+5)(x-1) < 2x+7
11. All services at the salon are 25% off today. Maria decided to get a haircut that originally costs $22. a. What would her total bill be with the discount?
Please help me with this question!
Locate the complete infinitive phrase and identify its use. To play the piano was Melanie's dream.