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
Is 90° supplementary
Anvisha [2.4K]
Yes, 90° is supplementary and 180° is condemnatory.
Hope it helps!
5 0
2 years ago
Find the value of x. Round to the nearest tenth.
vfiekz [6]

Answer:

60

Step-by-step explanation:

to find w:

sin(44) = w/30

w = 30sin(44)

w = 20.8 to 1 decimal place

to find x;

cos(x) = 20.8/45

x = cos^{-1}(20.8/45)

x = 62.46940334

x = 60

3 0
3 years ago
What is the measure of m?<br> 5<br> 15<br> E<br> n<br> m = [?]
AlekseyPX
<h3>Answer:  10</h3>

====================================================

Explanation:

The two smaller triangles are proportional, which lets us set up this equation

5/n = n/15

Cross multiplying leads to

5*15 = n*n

n^2 = 75

----------

Apply the pythagorean theorem on the smaller triangle on top, or on the right.

a^2+b^2 = c^2

5^2+n^2 = m^2

25+75 = m^2

100 = m^2

m^2 = 100

m = sqrt(100)

m = 10

7 0
2 years ago
If f (x) = x2 – 4, what is f (0)?<br> -
Advocard [28]

Answer:

what are the answer choices?

7 0
2 years ago
Read 2 more answers
Which intervals show f(x) increasing? choose two options
vivado [14]

Answer:

(-1.6, 0)

(0, 0.8)

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • the points (4, -6) and (9, -6) represent the location of two towns on coordinate grid, where one unit is equal to one mile. what
    12·2 answers
  • Can someone help me with these 2 questions please 100% correct only
    11·1 answer
  • What is the coefficient of the term 6/7xy <br><br><br><br> Plz help
    8·2 answers
  • Georgia’s gross pay was $35,600 this year. She is to pay a federal income tax of 16%. How much should Georgia pay in federal inc
    6·2 answers
  • Expanded form of 8x43
    8·1 answer
  • If k (x)=-7x+1 find the following <br> K (0)<br> K (-1)<br> K (5)
    9·1 answer
  • What are the square roots of 100?
    5·1 answer
  • A striped marlin can swim at a rate of 70 miles per hour is this a faster or slower than a sailfish which takes 30 minutes to sw
    7·1 answer
  • Is 5/12 closer to 0, 1, 1/2
    5·2 answers
  • I have a math dba at 10:00 am today for module 6 grade 6 segment 2 flvs. what should i know
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!