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
Naddika [18.5K]
4 years ago
8

4x4

Mathematics
1 answer:
aivan3 [116]4 years ago
5 0

Answer:

60=2(20)+2x

x=10

Step-by-step explanation:

First, let's write some equations. I wrote 60=2(20)+2x, where x is the length of the room. To solve, first multiply 2 times 20 for 40 (60=40+2x). Then, I subtracted 40 from both sides (20=2x). Finally, I divided on both sides by 2 (10=x).

You might be interested in
Find the root of the quadratic equation y=3x^2-30x+45
LuckyWell [14K]
y=3x^2-30x+45\\\\a=3;\ b=-30;\ c=45\\\Delta=b^2-4ac\\\\\Delta=(-30)^2-4\cdot3\cdot45=900-540=360 \ \textgreater \  0\\\\therefore\\x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{360}=\sqrt{36\cdot10}=\sqrt{36}\cdot\sqrt{10}=6\sqrt{10}\\\\x_1=\dfrac{30-6\sqrt{10}}{2\cdot3}=\dfrac{30-6\sqrt{10}}{6}=\boxed{5-\sqrt{10}}\\\\x_2=\dfrac{30+6\sqrt{10}}{2\cdot3}=\dfrac{30+6\sqrt{10}}{6}=\boxed{5+\sqrt{10}}
4 0
4 years ago
The math department needs to buy new textbooks and laptops for the computer science classroom. The textbooks cost $116.00 each,
Oksana_A [137]

Answer:

6 laptops.

Step-by-step explanation:

$6500 is the budget. If each textbook costs $116, and 30 textbooks are needed, you multiply.

116 x 30 = 3480.

3480 was spent on the textbooks, and the rest needs to go into laptops.

6500 - 3480 = 3020.

Now to find out how many laptops can be bought with the remaining money, divide.

3020 / 439 = 6.88 (You can't buy a portion of a laptop, so you have to take the biggest whole number, which is 6).

6 0
4 years ago
Write a polynomial of least degree with roots 0 and -4​
qaws [65]

Answer:

x^2+4x

Step-by-step explanation:

x(x+4) has solutions of x=0 and x=-4, which expands to x^2+4x

6 0
3 years ago
Will a stand that can hold up to 40 pounds support a 21-kilogram television?
LUCKY_DIMON [66]
1 kg = 2.20 pound
21kg = 21 x 2.20 = 46.2 pounds

Since the tv is heavier than the stand can support. The stand will not support the tv.
5 0
4 years ago
Select the correct answer.
FinnZ [79.3K]

Answer:

ghytmujtjy46hgqmwneymymwrj25rhq

5 0
3 years ago
Other questions:
  • Please answer ASAP. The question is down below
    7·1 answer
  • Question 22 on this pictured math sheet please. Have a great day!
    11·1 answer
  • A ball is thrown upward with an initial velocity of 64 ft/sec from a height 720 ft. Its height s, in feet, after t seconds is
    8·1 answer
  • What is 41.803 to the nearest whole number
    15·2 answers
  • 1. A restaurant bill, b, is $21. You leave a 15% tip. How much do you pay including the tip?
    8·2 answers
  • Greg has a piece of wire that is 72 inches in length. If 12 inches equals 1 foot, what is the length of wire in feet?
    6·2 answers
  • Olivia went for a hike. The graph below shows the distance she had hiked at different lengths of time. Which equation represents
    12·2 answers
  • Isosceles triangle with sides 3.5 in, 3.5 in, and 6 in.
    5·1 answer
  • Can someone help<br> Me on this question
    8·1 answer
  • How is the area of the parallelogram related to
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!