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
Rudiy27
3 years ago
5

Solve 6x^2 - 42 = 0 for the exact values of x

Mathematics
1 answer:
GREYUIT [131]3 years ago
6 0

Answer:

The values of x are

x=-\sqrt{7} , x=\sqrt{7}

Step-by-step explanation:

we have

6x^{2}-42=0

Solve for x

Adds 42 both sides

6x^{2}-42+42=0+42

6x^{2}=42

Divide by 6 both sides

6x^{2}/6=42/6

simplify

x^2=7

square root both sides

x=\pm\sqrt{7}

therefore

The values of x are

x=-\sqrt{7} , x=\sqrt{7}

You might be interested in
Could anyone explain to me about adding and subtracting exponents. I don’t understand these equations with their exponents!
meriva

Answer:

whenever you're multiplying terms that have exponents you multiply the coefficients and add their exponents:

Step-by-step explanation:

I think the answer to your first question should be:

30a²b - 30ab²

Your second answer is good

whenever you're multiplying terms that have exponents you multiply the coefficients and add their exponents:

for example, 6a²b³c x 2abc = 6(2)(a²)(a)(b³)(b)(c)(c)

= 12a³b⁴c²

8 0
2 years ago
I cant find this answer for my life
fredd [130]
1/343


Hope this helps (:
8 0
3 years ago
Read 2 more answers
Calculate the area of triangle ABC with altitude CD, given A (6, -2), B (1, 3), C (5, 5), and D (2, 2).
Flura [38]

Answer:

15 units

Step-by-step explanation:

I just took this geometry test with the same question. Its 15

3 0
3 years ago
Read 2 more answers
Can someone solve these please using the formula AB | a - b |<br><br> And can you show work
Lana71 [14]

Answer: 1) AC = 13

The formua does not actually apply to all of the problems.

Step-by-step explanation:

1) The absolute value of -8 is added to the absolute value of 5. 8+5=13

2) Subtract the length of the EF from EG to get the length of FG 21 -6 = 15

3) Take what's given and create an equation to solve. 4x + 15 +39 =110. 4x = 110 - (15+39).

4x =110-54. 4x =56. x=56/4. x=14

4) Create another equation. You have two segments that add up to the length of EG, given =23

EF+FG=EG

(2x-12)+(3x-15)=23

5x - 27 = 23

5x= 23+27 5x =50. x = 10

Substitute 10 for x

EF=2(10) -12 EF=8

FG=3(10)-15. FG=15

EF+FG =EG.

8 + 15 = 23

5) 2/5 of 25 is 10 So EF is 10. Subtract from 25 to get FG

FG = 15

I hope this helps you.

4 0
3 years ago
Which shows the equation below written in the form ax2 + bx + c = 0?
Svetach [21]

Answer:

A

Step-by-step explanation:

X^2 + 6X + 8 =3

TRANSPOSE 3 TO LEFT

X^2 + 6X + 8 - 3 = 0

CALCULATE

X^2 + 6 X + 5 = 0

3 0
3 years ago
Other questions:
  • (7,9) has a slope of 1. Write equation in slope intercept form
    7·1 answer
  • The end of a hose was resting on the ground, pointing up an angle. Sal measured the path of the water coming out of the hose and
    10·1 answer
  • Find the values of x and y.<br> No calculator needed.<br> Leave ✓ as a part of your answer.
    13·1 answer
  • 10000= 10x10×_x_<br>i need helo solving pls​
    11·1 answer
  • Please I need help asap
    5·2 answers
  • Katie is going to carpet her living room floor and drew the diagram shown below. What is the total area of carpet she will need?
    14·2 answers
  • How can I solve this problem? 4/6 minus 2/9?
    10·1 answer
  • 50 pounds of dog food for $38.00 <br> what is the unit rate
    15·2 answers
  • A 3-yard roll of waxed paper costs $9.81. What is the price per foot?
    7·1 answer
  • The net of a cone is composed of a circle and a <br> triangle<br> wedge<br> triangle
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!