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
alisha [4.7K]
3 years ago
8

What number can you multiply by √7 to get a rational number? (select each correct answer.)

Mathematics
2 answers:
PolarNik [594]3 years ago
5 0
Answers: Choice A, choice B, and choice C

Those two values, when multiplied by the given value, will lead to a rational number. If you pick choice A, then you get 7 as a result after multiplying. If you choose choice B, then you get -7

Note that
7 = 7/1
-7 = -7/1
So 7 and -7 are rational

Also, when multiplying 0 by any number, the result is always 0. The rule is 0*x = x*0 = 0
The value 0 is rational as 0 = 0/1

The only non-answer is choice D as 7*sqrt(7) can't be expressed as a ratio of two whole numbers.
gulaghasi [49]3 years ago
4 0
<span>A) √7 is the only option.</span>
You might be interested in
Which expressions represent a difference of squares?
andrew-mc [135]

Answer:

25 {x}^{2}  - 36\\ 1-16x^2\\4x^2 - 12x + 9

Step-by-step explanation:

25 {x}^{2}  - 36 \\  = ( {5x})^{2}  - ( {6})^{2}  \\

4 0
3 years ago
Question attached plz answer
Bezzdna [24]

Answer:

x = - 2.5

Step-by-step explanation:

Given that the sketch represents

y = x² + bx + c

The graph crosses the y- axis at (0 , - 14), thus c = - 14

y = x² + bx - 14

Given the graph crosses the x- axis at (2, 0), then

0 = 2² + 2b - 14

0 = 4 + 2b - 14 = 2b - 10 ( add 10 to both sides )

10 = 2b ( divide both sides by 2 )

b = 5

y = x² + 5x - 14 ← represents the graph

let y = 0 , then

x² + 5x - 14 = 0 ← in standard form

(x + 7)(x - 2) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 7 = 0 ⇒ x = - 7

x - 2 = 0 ⇒ x = 2

The x- intercepts are x = - 7 and x = 2

The vertex lies on the axis of symmetry which is midway between the x- intercepts, thus

the x- coordinate of the turning point is \frac{-7+2}{2} = \frac{-5}{2} = - 2.5

8 0
3 years ago
Find the first five terms that correspond with the following expression.<br><br> 4n + 2
Lorico [155]

Answer:

6,10,14,18,22

Step-by-step explanation:

4n+2

Let n=1  4(1)+2 = 4+2 = 6

Let n=2  4(2)+2 = 8+2 = 10

Let n=3  4(3)+2 = 12+2 = 14

Let n=4  4(4)+2 = 16+2 = 18

Let n=5  4(5)+2 = 20+2 = 22

7 0
2 years ago
Which is the least value 2.65, 2 4/5 or 2 3/4?
satela [25.4K]
2 4/5 I believe is the least value.
5 0
3 years ago
What are all the factors of 76
Len [333]

Answer:

1, 2, 4, 19, 38, 76

7 0
3 years ago
Other questions:
  • Solve the following equation<br>1) 2c + c + 12 = 78​
    5·1 answer
  • An employee makes a gross salary of 48,000 per year 15% of that money goes toward taxes of the employee invest 20% of his gross
    8·2 answers
  • Math question, any help is appreciated :)
    7·1 answer
  • What does 5x-2=6+x equal to
    7·2 answers
  • What is the product of (7/8)(-16)(-7)(-1/4)=
    9·2 answers
  • Which angle is adjacent to _DFE?<br> ZAFB<br> ZAFC<br> OBFD<br> _BFC
    7·1 answer
  • PLEASE HELP
    12·2 answers
  • Can you plz help me
    8·2 answers
  • Geometry I need help
    8·2 answers
  • Write an equation to represent the following statement. 51 5151 divided by 3 33 is k kk.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!