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
N76 [4]
3 years ago
8

4x^2-400=0 square roots and solving quadratics

Mathematics
1 answer:
posledela3 years ago
8 0

Answer:

x = ±10

Step-by-step explanation:

4x² - 400 = 0

Add 400 to both sides

4x² = 400

Divide both sides by 4

x² = 100

Take the square root of both sides

x = ±10

You might be interested in
Kyle is a basketball player. His bottle was full at the beginning of the game. At the end of the first quarter, he drank 5/7 of
gizmo_the_mogwai [7]

Answer:

1 4/35

Step-by-step explanation:

All I did was do 5/7 + 2/5.

5 0
3 years ago
PLZZZZZ help A car's gas tank that is 40% full contains 12 gallons of gas. Show the math you used to find the maximum capacity o
Romashka-Z-Leto [24]
<h3><u><em>Answer:</em></u></h3><h3><u><em>30</em></u></h3><h3><u><em>Step-by-step explanation:</em></u></h3><h3><u><em>Answer: 30 gallons</em></u></h3><h3><u><em></em></u></h3><h3><u><em>Step-by-step explanation:</em></u></h3><h3><u><em></em></u></h3><h3><u><em>So fist we add 40% and $40%. That's 80 percent of the tank which is 12 + 12 = 24. </em></u></h3><h3><u><em>Then we figure out half of 40 percent which is 20 which means its 6 gallons. </em></u></h3><h3><u><em>Now we add. 12+12+6 which equals our answer 30 gallons</em></u></h3><h3><u><em></em></u></h3>

<u><em></em></u>

3 0
3 years ago
Two wires
xz_007 [3.2K]

Answer:

am i suppoesd to do number 7 as well?

Step-by-step explanation:

Two wires

tether a balloon to the ground, as shown. How

high is the balloon above the ground? (Must Use Right

Triangle Trigonometry)

look at picture

4 0
3 years ago
E U F {2,4,6,8,} true or false
lesya [120]
Tbh i think its true not 100%
4 0
3 years ago
Solve for x. Show the equation you used and your work.
levacccp [35]
The value of X is 27.

To solve this problem, you have to write a proportion with the given information. This can be done because the sides on the left and right are proportional with the values on the bottom.

36 / 24 = x / 18
x = 27
5 0
3 years ago
Other questions:
  • Prove that (Cosx-Cos³x)/Sinx=SinxCosx​
    5·1 answer
  • Please Help me, Ive Been Stuck On This Question For Ages. :C (Image in question) (And Questions As Well)
    14·1 answer
  • Consider two hard disks, d1, and d2, such that in 50,000 hours of operation d1 fails with probability 1/3 and d2 fails with prob
    10·1 answer
  • 1.5<br> For use after Le<br> Divide, if possible.<br> 1. 3+ (-1)
    7·2 answers
  • Lily invested $750 in a savings account and earned $225 in interest at the end of 5 years. 
    15·2 answers
  • HELP ME PLZ I NEDD A ON ThIS SO GET ME RIGHT I WELL GIVE BAIRELEST thank you
    6·2 answers
  • Plz help help❤️Urgently
    6·1 answer
  • This is going to be my 13th reason please help me
    8·1 answer
  • A new school is ordering math text books. They are 3/4 of an inch thick. How many these books will fit into a book shelf that is
    15·2 answers
  • A factor that is common to all terms of an expression or to two or more expressions
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!