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]
3 years ago
5

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

Mathematics
2 answers:
Svet_ta [14]3 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]3 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
nora has 3/4 as many books as victor. let v represent the number of books victor has. create an expression to represent the numb
xxTIMURxx [149]

Answer:

N = \frac{3}{4} * v

Step-by-step explanation:

Since the value that we are provided is a fraction that is tied to the number of books that Victor has, we would simply need to multiply this fraction by the total number of books that Victor has. This value is represented by the variable v while the total number of books that Nora has is represented by the variable N. Therefore, the expression would be the following

N = \frac{3}{4} * v

4 0
3 years ago
1 The rectangle below represents the base of a rectangular prism. The rectangle is 4 cm by 5 cm. The height of the rectangular p
Natalija [7]

Answer:

240 cm^3

Step-by-step explanation:

Volume of a rectangular prism = base area x height

the base is a rectangle, thus base area = width x length = 4 x 5 = 20 cm^2

20cm^2 x 12 = 240 cm^3

5 0
3 years ago
-7/10+7/15+1/-20+-9/10+11/15+11/-20 <br> what is the answer please help me .....!!!!
Nat2105 [25]

Answer:

-1

Step-by-step explanation:

-7/10+7/15+1/-20+-9/10+11/15+11/-20

= -7/10 + -9/10 + 7/15 + 11/15 + 1/-20 + 11/-20

= -16/10 + 18/15 + 12/-20

= -8/5 + 6/5 + -3/5

= (-8+6-3)/5

= -5/5

= -1

7 0
3 years ago
The scale drawing shown above has a scale of 1inch:12feet. The redraw has a scale of 1inch:4feet. What will be the height of the
Tasya [4]
20% is the real answer yasss
3 0
3 years ago
In a game of poker a hand of five cards is dealt to each player from a deck of 52 cards. find the probablility of a hand contain
aalyn [17]

Answer:

0.00597

Step-by-step explanation:

Given,

Total number of cards = 52,

In which flush cards = 20,

Also, the number of spade flush cards = 5,

Since,

\text{Probability}=\frac{\text{Favourable outcomes}}{\text{Total outcomes}}

Thus, the probability of a hand containing a spade flush, if each player has 5 cards

=\frac{\text{Ways of selecting a spade flush card}}{\text{Total ways of selecting five cards}}

=\frac{^{20}C_5}{^{52}C_5}

=\frac{\frac{20!}{5!15!}}{\frac{52!}{5!47!}}

=\frac{15504}{2598960}

= 0.00597  

7 0
3 years ago
Other questions:
  • Which ordered pairs are solutions to this function? f(x)=-5x-8
    5·2 answers
  • Put the following in -1/4, -5.0, 0.7, 4/5
    7·1 answer
  • A sports ball has a diameter of 12 cm. Find the volume of the ball. Round your answer to 2 decimal places, and use 3.14 as an ap
    12·1 answer
  • Glenn bought 3 pounds of tomatoes. He used § of them to make sauce.
    14·1 answer
  • Jason tossed a fair coin 3 times. What is the probability of getting a head and two tails in any order?
    13·1 answer
  • PLEASE ANSWER QUICKLY
    14·1 answer
  • Math Help ASAP! I will give you Brainliest!!!!
    15·1 answer
  • What is the factored form of the function f(x)=x^3+8x^2+5x−50?
    13·1 answer
  • Find the slope of the line -x = -3y + 9
    5·2 answers
  • Name 10 different rays. Then name 2 pairs of opposite rays. <br><br> I simply need to check answers!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!