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
Anvisha [2.4K]
3 years ago
11

Solve 169x^2-42.25=0 by using square roots? NEED HELP!!!

Mathematics
1 answer:
jekas [21]3 years ago
5 0

Answer:

x = 1/2 , x = -1/2

Step-by-step explanation:

Given equation;

169x² - 42.25

Find:

Solution of equation using square root

Computation:

169x² - 42.25

We know that 13² = 169 and 6.5² = 42.25

So,

[13x]² - [6.5]²

a² - b² = (a + b)(a - b)

So,

[13x]² - [6.5]² = [13x + 6.5][13x - 6.5]

So,

13x + 6.5 = 0 , 13x - 6.5 = 0

x = 6.5 / 13 , x = -6.5 / 13

x = 1/2 , x = -1/2

You might be interested in
Slope of (1,1) and (9,10)
krok68 [10]

Answer:

1.125  or 9/8

Step-by-step explanation:

You could use an online slope calculator or plug these points into the slop equation

y2-y1/x2-x1

6 0
3 years ago
Y=3×+7 y=×-9 what is the solution of the equation
Aneli [31]

Since both equations are equal to y you can just make them equal to each other, like this 3x + 7 = x - 9. From there isolate the varible x on one side so that the solution will be on the other side of the equation. I'll do the steps too for you.

3x + 7 = x - 9

2x + 7 = -9

2x = -16

x = -8

Hope this helps :)

7 0
4 years ago
Read 2 more answers
A new recreational sports center opens with 65 members. Each month the membership
Musya8 [376]
It would be C. Initially you her 65 people so it’s plus 65 and then 12 members per month (x) so it would be C
7 0
3 years ago
Hello can you please help me posted picture of question
ollegr [7]
The correct option is (B) 4x^2 + 18x + 18

Explanation:
The area is given as:
(3+2x)(6+2x)

To find the polynomial just simplify it.
3(6+2x) + 2x(6+2x)

18 + 6x + 12x + 4x^2

4x^2 + 18x + 18
7 0
3 years ago
The Lumberjack Hardware store found that 5 out of every 10 paint sprayers they recently received were not properly assembled. If
babymother [125]

Answer: 193 faulty paint sprayers

Step-by-step explanation: 5/10 is = to 1/2 so half of them are faulty

next divide 365 by 2 to get 192.5 remember if the decimal is 5 or greater you can round up since you cannot have half a paint sprayer you have to round up to 193 paint sprayers

hope this helps mark me brainliest if it helped

3 0
3 years ago
Other questions:
  • What is the percentile rank when the Z score is -1.2 and the raw score is 52
    6·1 answer
  • What is the conjugate of 6+ 7i
    13·1 answer
  • Find the outlier of the set of data: 24, 37, 33, 31, 28, 25, 33, 12
    15·2 answers
  • Fiona has proved that a function, f(x), is an arithmetic sequence. How did she prove that? A. She showed that an explicit formul
    14·2 answers
  • Finding missing sides of triangle.<br><br> 2x = 10 (square root symbol) 3
    5·1 answer
  • 2,550 gallons in 30 days
    9·1 answer
  • What is the solution to the equation 1/2x+3=2/3x+1
    10·1 answer
  • Find the difference. (-ab+8a-5)-(-8ab-4)
    7·2 answers
  • Please Help will give Brainliest!!
    15·1 answer
  • Y=x^2 translate 4 units down and 3 units left
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!