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
gladu [14]
2 years ago
9

The area of a square can be tripled by increasing the length and width by 10 inches. What is the original length of the square?

Mathematics
1 answer:
trapecia [35]2 years ago
5 0
The new square has length: 10 + l, where l is the original length of the square, and it's area is (10 + l)^2;
So, we solve the equation: 3 x l^2 = (10 + l)^2;
Then, 3 x l^2 = 100 + 20 x l + l^2;
Finally, 2xl^2 - 20xl - 100 = 0;  / ÷2;
l^2 - 10l - 50 = 0 (we use the quadratic equation formula);
The only positive solution is l = 5(1+ \sqrt{3} );


You might be interested in
In rectangle nice, the base is 2x and the height is x+1. the perimeter is 53 feet. find the height
mihalych1998 [28]
The perimeter equation for a rectangle is two times the base plus two times the height.
2B + 2H=P

Plug in the known values and solve for x.
2(2x) + 2(x+1)=53
4x+2x+2=53
6x=51
x=8.5

Now that we know what x is, put it back into the formula for the height of the rectangle to find the final answer.
H= x+1
H=8.5+1
H=9.5 ft
4 0
3 years ago
If one card is drawn from a deck, find the probability of getting a 4 or a club
Anvisha [2.4K]

Answer:

16/52

Step-by-step explanation:

A 4 or a club4/52 + 13/52 - 1/52 = 16/52 = 4/13f. A 6 or a spade4/52 + 13/52 - 1/52 = 16/52 = 4/13g. A heart or a club13/52 + 13/52 = 26/52 = 1/2h.

8 0
2 years ago
The prism below is made of cubes which measure 1/3 of a centimeter on one side. What is the volume?
Brut [27]

Answer:

the answer is C.  20/27 cubic cm.

Step-by-step explanation:

V = LWH

length 5(1/3 cm)

width 2(1/3 cm)

height 2(1/3 cm)

V = (5/3 cm) (2/3 cm) (2/3 cm)

V = 20/27 cubic cm.

6 0
3 years ago
Read 2 more answers
What city was the first capital of the United States?​
Wewaii [24]

I believe New York City was the first capital of the US.

3 0
2 years ago
Read 2 more answers
Susan subscribed to a video game rental service. She pays the same amount for each video game she rents plus a monthly fee to su
podryga [215]

Answer:

C-$6.00 monthly fee and $1.25 per video game

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Hi. im kinda stuck on this question.
    8·2 answers
  • Hola guys...Can you plz help me to find the solutions for -3x+y=0 for linear equations in two variables graph... Pleaseee
    10·1 answer
  • a square picture frame occupies an area of 112ft² what is the length of each side of the picture in simplified radical form?
    12·1 answer
  • The total load on a certain service is 525 kva. one-third of this load is from motors; 3/5 is lighting; and 1/15 is from other l
    11·2 answers
  • 50% of all the cakes Jenny baked that week were party cakes,1/5 were fruit cakes and the remainder were sponge cakes. What perce
    9·1 answer
  • Tell whether the ratios form a proportion<br>True <br> or<br>False ​
    15·1 answer
  • Which expression best represents all solutions of x for the equation cot x = –1.25, where k is any integer?
    5·1 answer
  • С<br> 4<br> 77 km<br> 36 km<br> What is the length of the hypotenuse?
    11·1 answer
  • A line passes through the points (1,2) and (–5,1).
    7·1 answer
  • The 250 gallons of maple sap will be
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!