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
slava [35]
2 years ago
5

Solve the quadratic equation. 3x^2 - 5= 70 (Please explain steps)

Mathematics
2 answers:
Svet_ta [14]2 years ago
5 0
Simplifying
3x2 + -5 = 70

Reorder the terms:
-5 + 3x2 = 70
Solving
-5 + 3x2 = 70

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '5' to each side of the equation.
-5 + 5 + 3x2 = 70 + 5

Combine like terms: -5 + 5 = 0
0 + 3x2 = 70 + 5
3x2 = 70 + 5

Combine like terms: 70 + 5 = 75
3x2 = 75

Divide each side by '3'.
x2 = 25

Simplifying
x2 = 25

Take the square root of each side:
x = {-5, 5} and that’s it.
pickupchik [31]2 years ago
3 0
1.Change the minus sign into a positive
2.add five to both sides
3.do 3 to the 2nd power
4. Divide the two numbers (the one with the variable and the number u got when u added five to it)
You might be interested in
What is F(7) if (x) = 5x
Law Incorporation [45]
The answer is 35.
........
3 0
2 years ago
Read 2 more answers
What is the value of x?
musickatia [10]
X = 7. Because both lines equal the same so it has to equal 75
11 x 7 = 77
77-2 = 75
X = 7
6 0
2 years ago
Read 2 more answers
Can anyone help me with this pls? i have no idea what im doing
Musya8 [376]

h(11)=-20+11\cdot11=-20+121=-101

8 0
3 years ago
A draw scaling of a parking lot has a width of four inches. If the scale is 1 inch = 8 feet. What is the actual width of the par
IgorLugansk [536]

Answer: 32 feet

Step-by-step explanation:

Since 1 inch equals 8 feet and the parking lot has a width of 4 inches we multiply 8 times 4 giving you an answer of 32, so the parking lot's width is 32 feet.

4 0
2 years ago
Hi, could you help me with my last question?
alina1380 [7]

Answer:

R is (6,-8)

S is (8,-8)

T is (8,-7)

U is (6,-7)

8 0
3 years ago
Other questions:
  • What are the different types of science
    6·2 answers
  • Geometry please help
    15·2 answers
  • What is the value of -3² +(-4+7)(2)<br><br>A. -28<br>B. -3<br>C. 3<br>D. 15​
    10·1 answer
  • A teacher asks students to list the math lessons they learned on nine random school days in the past month. She evaluates the st
    9·2 answers
  • Lorena and Sebastian are both five years old. Every year they each get a cash present from their ncighbor.
    9·2 answers
  • Drag each tile to the correct box. Not all tiles will be used.
    10·2 answers
  • Sandy purchased 3 pairs of shorts, 5 shirts, and 2 pairs of sandals. Which of the following expressions represents the number of
    15·1 answer
  • H(x)=-4+16 find x when h(x)=48 Plz don't say it is incomplete
    8·1 answer
  • Which point is closest to the x axis. (4, 8) (2, 11) (8, 7) (3, 13)
    15·1 answer
  • Okayy but fr someone helppp, plss ASAP. I need an answer now
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!