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
ratelena [41]
4 years ago
11

Help on this question, please

Mathematics
1 answer:
qwelly [4]4 years ago
5 0

Answer:

x = ±sqrt(7)

Step-by-step explanation:

3x^2 + 7 = 28

Subtract 7 from each side

3x^2 + 7-7 = 28-7

3x^2 = 21

Divide by 3

3x^2  /3 = 21/3

x^2 = 7

Take the square root of each side

sqrt(x^2) = ±sqrt(7)

x = ±sqrt(7)

You might be interested in
The city center parking garage charges $3.50 for the first hour and $1.25 for each additional half hour how much would it cost t
cupoosta [38]

Answer:

$7.25

Step-by-step explanation:

First hour=3.50

still have 1 1/2 hours left =3 half hours

1.25x 3=3.75

3.50+3.75=7.25

6 0
3 years ago
1.546 + 0.07 how to subtract decimals i dont wanna fail 6th grade
cestrela7 [59]

Answer: 1.616 of adding and subtracting will be 1.476

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
9. Beth has 28 math problems for homework. She has 4 times as many problems as her sister, Mary. Which equation shows how many p
Lemur [1.5K]

Answer:

Answer is 28/4 = 7

Step-by-step explanation:

Given

Beth B = 28 problem

B has 4 times more problem than Mery m

Find

Total number of problem Mery m has if Beth has 4 times more problem than Beth

So,

B = 4 x m

m = B/4 = 28/4 = 7

Finally answer (d) is correct which is 28 ÷ 4 = m

3 0
3 years ago
Help ASAP please!!!
tatyana61 [14]
U should add all the #s together so... it = 11.3
then divide by the # of terms. so...... 11.3/ 14= 0.9357 (rounded makes 0.94) 


So .... B
3 0
3 years ago
Read 2 more answers
198 cans of food consisted of both veggies and fruits. if 1/3 of the cans were veggies how many cans were
Bas_tet [7]

Answer:

\frac{1}{3}  \times 198 = 66 \: canned \: veggies \\  \\ 198 - 66 = 132 \: canned \: fruit

8 0
3 years ago
Other questions:
  • Find the volume of a right cylinder with a diameter of 18 inches and a height of 20 inches. *
    10·2 answers
  • Please help ASAP! Only one question!!
    13·1 answer
  • A person standing close to the edge on top of a 96-foot building throws a ball vertically upward. The quadratic function h = − 1
    8·2 answers
  • Is the ratio of two odd functions odd
    11·1 answer
  • The ratio of boys to girls in a class is 4:5, what fraction of the class is boys
    7·2 answers
  • The rectangular backboard of a basketball court needs to be assembled. Its area is given as 18,900 cm2 and the width as 1.8 m.
    9·1 answer
  • If the point (4,-1) is a point on the graph of f then f
    11·2 answers
  • 10. simplify the rational expression by rationalizing the denominator.( 1 point ) 4√150/√189x
    9·1 answer
  • What is the range of the function in this table
    13·2 answers
  • Whats the answer pls help
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!