3 years ago

What are the solutions of the quadratic equation 49x2 = 9?

Mathematics

2 answers:

Troyanec [42]3 years ago

8 0

Answer:

the answer is B !

pishuonlain [190]3 years ago

7 0

49x^2 - 9 = 0
As there is no x term, we can pretty much guess we have a situation where we factlrise by something known aa difference of two squares, so to factorise it:
49 = 7^2
9 = 3^2
x^2 = (x)^2
so...
(7x - 3)(7x + 3) = 0
7x - 3 = 0 7x + 3 = 0
x = 3/7 x = -3/7

You might be interested in

. For the function given, state the starting point for a sample period:

Aneli [31]

I think the answer is π?

8 0

3 years ago

Solve the multiple choice for number 6

12345 [234]

Answer:

I'm pretty sure it is A

Step-by-step explanation:

5 0

2 years ago

Figure A is dilated by a scale factor of 1 to form Figure B.

son4ous [18]

Answer:

C. 8 inches

Step-by-step explanation:

Note. The original question is attached.

Solution:

Scale factor is 1/2 and the corresponding side has a length of 16 inches.

The value of x is:

x = 1/2*16 = 8 inches

Correct option is C

6 0

2 years ago

What theorem is this sss,sas,asa,aas,hl, or not enough info

svp [43]

ASA - verticals angles are equal, two sides are equal, and two other angles are marked equal

6 0

2 years ago

A mechanic charged $220.28 to repair a car. The price included charges for 3 hours of labor and $126.53 for parts. How much does

Assoli18 [71]

Answer:

$31.25

Step-by-step explanation:

Let's set up an equation.

$220. 28 - total

$126.53 - cost for parts

3 - # of hours

? - price per hour

3h + $126.53 = $220.28

Subtract $126.53 from both sides.

3h = $93.75

Divide by 3.

h = $31.25

The mechanic charges $31.25 per hour for labor.

Hope that helps.

6 0

2 years ago