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
erma4kov [3.2K]
3 years ago
10

A bookmark has an area of 14 square centimeters and a perimeter of 18 centimeters. What are the dimensions of the bookmark?

Mathematics
1 answer:
Naily [24]3 years ago
4 0

Answer:

2 x 7

Step-by-step explanation:

a * b = 14

2a + 2b = 18

(a * b)/b  = 14/b Dividing both sides by b

a = 14/b

Substitute a in the perimeter equation

2(14/b) + 2b = 18

28/b + 2b = 18

2b - 18 + 28/b = 0

Multiply both sides by b

2b^2 - 18b + 28 = 0

Divide both sides by two

b^2 - 9b + 14 = 0

The Factors of 14 include -2 and -7 which add up to -9

(b - 2) * (b - 7) = 0

This has two answers because b can be either the side that is 2 long or 7 long, so there's no need to go back and solve for a.

2 x 7

You might be interested in
Find the diagonal of a square whose sides measure 3 square root 2
mrs_skeptik [129]

The Pythagorean theorem can be used to find the length of the diagonal (d) of a square.

d² = (3√2)² + (3√2)² = 18 + 18 = 36

d = √36 = 6

The measure of the diagonal is 6.

8 0
3 years ago
Kiran got 99 marks in Math, 69 mark in English and 91 in science. Another student Surya got 92 marks in Maths 33 in English and
statuscvo [17]

Answer:

Total marks = 468

Step-by-step explanation:

to find their total marks, you should simply find the sum of all the marks scored by Kiran and Surya in all subjects. That is done as follows:

99 + 69 + 91 + 92 + 33 + 84 =  468

4 0
3 years ago
If the sides of a triangle are 3,4, and 5, then, to the nearest degree , the measure of the smallest angle of the triangle is?
ASHA 777 [7]

Answer:

37 Degrees

Step-by-step explanation:

arc tan(3/4) = 36.869 degrees

5 0
3 years ago
Simplify.<br><br> (2f+5)2<br> lllllllllllllllllllllllllll
Yuki888 [10]

Answer:

Step-by-step explanation:

I think 4f + 10

4 0
2 years ago
Read 2 more answers
Eight avocados cost $4.
Y_Kistochka [10]

Answer:

<h2><em> $10.</em></h2>

Step-by-step explanation:

<h3><em>If eight avocados is equal to four dollars, then sixteen (eight times two) is equal to eight dollars. Since you can't add another eight avocados to get twenty, you would add half of eight, which would also be half of the cost of eight. Adding four to sixteen gets you to twenty and adding two dollars to eight gets you to ten dollars.</em></h3>
7 0
2 years ago
Read 2 more answers
Other questions:
  • Which explains why the graph is not a function?
    9·1 answer
  • What are the weights (in Newton’s) for the given masses 22.1,33.5,41.3,59.2,78
    8·1 answer
  • K (n) = 4n – 4; Find k (8)<br> 28<br> 4<br> -32<br> -24<br> The answer
    13·1 answer
  • Is proportional or not?
    8·1 answer
  • ...................Help Please....
    14·2 answers
  • Help please I’m a little confused
    12·1 answer
  • 756 divided by 36 <br> plz need help
    6·2 answers
  • Help me someone smart
    11·1 answer
  • PLZ HELP if u know the answer for sure​
    7·1 answer
  • ANSWER AND EXPLAIN I’LL MARK BRAINLIEST PLEASE ILL MARK BRAINLIEST
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!