1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
9966 [12]
3 years ago
7

The width of a rectangular card is 2 cm lekss than the Tength. The area is 15 cm. Find the length and

Mathematics
1 answer:
Yuri [45]3 years ago
5 0

Answer:

Step-by-step explanation:

Area A = 15square cm

Length L = x

Width w = x - 2

Area = L × w

15 = x(x - 2)

15 = x^2 -2x

x^2 -2x - 15 = 0

Solving by factorization

x^2 - 5x + 3x - 15 = 0

(x^2 -5x) + (3x -15) = 0

x(x - 5) + 3(x - 5) = 0

(x + 3)(x - 5) = 0

(x + 3) = 0 or (x - 5) = 0

x = -3 or 5

Since x can't be negative therefore x is 5cm

Length = 5cm

Width = 5-2 = 3cm

You might be interested in
5x-3=19? Answer for Brainliest
vampirchik [111]

Answer:

x = 4.4

Step-by-step explanation:

I'm going to assume you want to solve for x so here we go.

You need to work backwards for this equation, and whatever you do to the LHS, you do to the RHS.

First, you need to remove the minus 3, which means that on both sides, you add 3. Adding three on the LHS makes the -3 disappear, and adding 3 on the RHS makes the 19 go to a 22.

Your equation is now 5x=22.

Since 5x means 5 × x, to get rid of it, you need to divide 5x by 5. Doing it to the LHS will make the five disappear, and doing it to the RHS will make it go to 22 ÷ 5 which equals 4.4

Therefore, x = 4.4

4 0
3 years ago
What is x multipied by -x
Alik [6]
The result of x*(-x)=-x^2

7 0
3 years ago
Read 2 more answers
How do you spell 4.10 as a word form
Hoochie [10]
Hello there. ;D

How do you spell 4.10 as a word form
Answer: four and ten hundredths.<span>
</span>
8 0
3 years ago
Read 2 more answers
Help please (show work please thanks)
madam [21]
The least amount is 2 packs.
i know this becaus first i make a lcm chart which looks like this :
8: 8,16,24,32
12: 12,24
i then see that the lcm is 24 and 12+12 is 24 meaning that i will have to buy 2 packs of large plates.
4 0
3 years ago
23.017 nearest tenth​
hodyreva [135]

Answer:

23

Step-by-step explanation:

If it's lower than 5 keep it and go

Above 5 climb one number higher

4 0
3 years ago
Read 2 more answers
Other questions:
  • Determine the center and radius of the following circle equation:
    11·1 answer
  • Whats 5 over 9 devided by 90
    11·1 answer
  • Which of the following equations is equivalent to 2/3 x - 1/2 y = 6? 2x - y = 6 2x - y = 36 4x - 3y = 36
    6·1 answer
  • A collector bought a rare coin for $30. The coin is now valued at $37.50. What is the percent increase in value?​
    15·1 answer
  • Solve for m f=gmn/d^2
    10·1 answer
  • What is the degree of the polynomial and what the y-intercept
    13·1 answer
  • Find the value of in the triangle shown below<br> 53°<br> 2<br> 97°
    11·1 answer
  • Simplify each expression then order the expressions in descending order. To order the numbers click and drag the expressions int
    14·1 answer
  • HELP!! what is 2 x 10 to the fourth power - 7 to the fourth power?
    7·1 answer
  • Laurie has a signed contract with I- Mobile where she will pay a $25 fee each month plus $2 per phone call.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!