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
levacccp [35]
3 years ago
15

If a^2 -b^2 =12 and a-b=4 what is the bay of a +b

Mathematics
1 answer:
slava [35]3 years ago
7 0

Answer:

a+b = 3

Step-by-step explanation:

a = b+4

a^2 = (b+4)(b+4) = b^2 + 8b +16=-b^2 = 12

8b=-4

b = - 1/2

a = 3.5

You might be interested in
How many kilograms in 1 1/2 pounds?
gtnhenbr [62]
0.68 kilograms are in 1 1/2 pounds
4 0
2 years ago
Read 2 more answers
Find the larger of the two roots of the equation y = -2.2x2 + 63.5x - 17
Luden [163]

The larger of the two roots of the equation y = -2.2x^2 + 63.5x - 17would be 28.59.

<h3>How to find the roots of a quadratic equation?</h3>

Suppose that the given quadratic equation is

ax^2 + bx + c = 0

Then its roots are given as:

x = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}

The given quadratic equation is

y = -2.2x^2 + 63.5x - 17

now, the roots of the equation are

x = \dfrac{-63.5 \pm \sqrt{63.5^2 - 4(-2.2)(-17)}}{2(-2.2)}\\\\\\x = \dfrac{-63.5 \pm \sqrt{4032.25 - 149.6}}{(-4.4)}\\\\\\x = \dfrac{-63.5 \pm \sqrt{3882.65}}{(-4.4)}\\\\\\x = \dfrac{-63.5 \pm 62.31}{(-4.4)}

The two roots are 0.27 and 28.59.

Thus, the larger of the two roots of the equation y = -2.2x^2 + 63.5x - 17would be 28.59.

Learn more about finding the solutions of a quadratic equation here:

brainly.com/question/3358603

#SPJ1

7 0
1 year ago
The minimum level of inventory needed to meet customer demand is called the
Licemer1 [7]

Answer:

minimum level of stock

4 0
2 years ago
18. Twelve theatre tickets cost $66. What is<br> the cost of 5 tickets?
nikklg [1K]

Answer:

$27.50

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
One side of a triangle is 3 times the second side. The third side is 17 feet longer than the second side. The perimeter of a
Nadya [2.5K]

Answer:

Step-by-step explanation:

lets have one side =a

P=3a+a+(17+a)=52

P=5a+17=52

5a=52-17

5a=35

a=7

second side=21

third side=24

3 0
3 years ago
Other questions:
  • Fiona ran 6 laps around a track each lap was 500 meters how far did Fiona run? Circle all that apply
    15·2 answers
  • Round off 0.065 to one significant figure
    8·2 answers
  • Which number produces a rational number when multiplied by 1/5 ?
    5·2 answers
  • Find the solution using the Quadratic Formula. (show work) 2x + 8x+ 5 = 0 a. 47 ſ6 b. -27 56 c. -2± √3​
    11·1 answer
  • The length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with a
    7·1 answer
  • Enter the common ratio for the geometric sequence below.
    6·1 answer
  • Please help on this !!!!!!! Will make brainliest !!!!!!!!!!!
    12·1 answer
  • Does the MVT apply? Explain why or why not.<br> y=-x^2/x-1 ; [-1,1]
    7·1 answer
  • A square has a perimeter of 36yd. What is the length of each side
    5·1 answer
  • Help plss sorry for wasting ur time!!
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!