A student says that it 5x^2 =20,then x must be
equal to 2. Do you agree or disagree with the
student? Justity your answer.

Answers

Answer 1
I agree with the student.Justification:[tex] {5x}^{2} = 20 \\ = > {x}^{2} = \frac{20}{5} \\ = > {x}^{2} = 4 \\ = > x = \sqrt{4} \\ = > x = 2[/tex]Therefore, x must be equal to 2.So his statement is right.

Hope you could get an idea from it.

Doubt clarification - use comment section.


Related Questions

A line has a slope of 6 and passes through the point (2, 7) . What is its equation in slope "y-intercept" form?

Answers

Answer:

C

ON THE EDGE

Step-by-step explanation:


What is the equation of the line that passes
through the points (0, -6) and (-2, -7)?

Answers

y=-x+3

hope this helps

Describe how you will know if two variables are proportional in a table

Answers

Answer:

The graph of a straight line through the origin with a slope equal to the unit rate.

22. A company's stock price dropped $10 a week for one year. How much will it have decreased by the end of the year? ​

Answers

I think it’s 520 $10 times the amount of weeks in a year

whats the slope of (-5,-11) and (-2, 1)

Answers

I believe it’s .75 or 3/4

Answer:

4

Step-by-step explanation:

How many solutions exist for the system of equations in the graph?

Answers

Which graph??????????????????

Today only, a desk is being sold at a 29% discount. The sale price is $497.
What was the price yesterday?

Answers

Answer: yesterdays price was $700

Step-by-step explanation:

$497 = 71% of the RP (100 - 29)

RP*0.71 = 497

RP = 497/0.71

RP = $700

A class of 30 students visits an art museum and a special exhibit while there.

a. Use the Distributive Property to write and simplify an expression for the cost.
b. Estimate a reasonable value for x. Explain.
c. Use your estimate for x to evaluate both expressions in part (a). Are the values the same?

PRICES:
Museum Exhibit
Child (under 5) Free Free
Student $8 $x
Regular $12 $4
Senior $10 $3

Answer quick!!

Answers

A reasonable price for X would be $ 2.

Since a class of 30 students visits an art museum and a special exhibit while there, and the prices were as follows:

Child (under 5) Free Free Student $ 8 $ x Regular $ 12 $ 4 Senior $ 10 $ 3

To estimate a reasonable value for x, the following logical reasoning must be made:  

Regular 12 Senior 10 Student 8 = -2 Regular 4 Senior 3 = -1

Therefore, a reasonable price for X would be $ 2.

Learn more about maths in https://brainly.com/question/25916930

Need help l don’t understand could someone help me?

Answers

Answer:

first put the numbers and unknowns to different sides, as in 6x-3x= 14-5, now solve for x, 3x=9, divide each side by 3 to get the value of x, x=3

Step-by-step explanation:

I did it for you. (Step by step)

I hope this helps.

y = 5x + 1
Table down below
Help!

Answers

Answer:

Answers below

Step-by-step explanation:

-32 -> -7.4

0 -> 1

20 -> 5

Solve w + 1∕4 < 7∕8.
Question 10 options:

A)

w < 5∕8

B)

w = 5∕8

C)

w > 5∕8


D)

w ≤ 5∕8

Answers

Answer:

w < 5/8

Step-by-step explanation:

What’s 8 more then triple a number?

Answers

Answer:

x^3+8

Step-by-step explanation:

PLEASE SOMEONE HELP ASAP I NEED HELP WITH THIS

Answers

Answer:

See image

Step-by-step explanation:

Rate of change means how much does the number of snowflakes go up each time (on a different question you might find the number goes down each time)

"Initial value" means whatthe number if snowflakes at step zero. We have to work backwards to find that number. For the equation, fill in the rate in front of the x (we use m for that number) and add in the initial value (b) in the format y=mx+b . The information for the table is in the picture (the step numbers and number of snowflakes)

See image

Select the graph of the solution set that would represent the following expression. x+2<2(x-1)

Answers

if any doubt leave a comment

Why is it a shame that parallel lines have so much in common riddle answer

Answers

It’s a shame because they’re never gonna meet.

Answer:

Bc they will never meet (intersect, touch, etc)

Step-by-step explanation:

Parallel do not intersect.

Mark me the Brainliest! Ty!

Help! 100 points! I'm also giving brainiest to whoever gives a correct answer to the following questions or nonetheless a solid explanation behind their answer. Thank you and comment for any concerns or issues!

Answers

Step-by-step explanation:

1a)

it means that after 14 hours into the experiment the temperature of the liquid reaches exactly the temperature of the surrounding room at that moment : 10° F.

1b)

it is the point (14, 10), and I know, because both lines touch or cross each other at that point, as due to the equality relation both curves contain this point (meaning they have the same result value 10 for the same function argument 14).

4a)

because the slope of the line segment at the end is larger (making the line go up at a much steeper angle) than fire the line segment at the beginning.

4b)

it looks like the experiment started at hour 0 with the liquid being at around -5° F.

and it reached +10° F after about 10 hours.

the x (time) difference is +10 (from 0 to 10).

the y (temperature) difference is +15 (from -5 to 10).

so, the slope at the beginning of the excitement is about +15/+10 = 3/2.

and at the end of the experiment it looks like the last line segment starts at about 20 hours with the liquid at about -3° F. and it ends at hour 30 and at 30°F.

the x (time) difference is +10 (from 20 to 30).

the y (temperature) difference is +33 (from -3 to 30).

so, the slope at the end of the excitement is about +33/+10, which is much bigger than 15/10 at the beginning.

1. If you drink milk, then you grow?​

Answers

Answer:

false

Step-by-step explanation:

we can drink water and still grow

What is the experimental probability of spinning the given result? Round your answer to the nearest hundredth if necessary.

Outcome

A

B

C

D

Frequency

20

11

14

30



C

a.

0.14

c.

0.81

b.

1

d.

0.19

Answers

Answer:  Option 'c' is correct.

Step-by-step explanation:

Since we have given that

Number of times the spinner spun = 75

Outcomes     Frequency

A                          20

B                           11

C                           14

D                           30

We need to find the experimental probability of spinning an "A" :

so, Probability of spinning an A is given by

Probability of getting an A is 0.27.

Hence, Option 'c' is correct

please mark me brainiest i am almost an expert!!

Pls solve I need this today

Answers

Answer:

25

Step-by-step explanation:

Check
Match the solution set given in inequality notation with the solution set given in interval notation.
17,88
(-0, 7.8)
7.8
(7.8,00)
> 7.8
[7.8,00)
V
7.8
(-0, 7.8)

Answers

The Matching of the inequality is

x ≤ 7.8 -> (-∞,7.8]

x < 7.8 -> (-∞,7.8).

x > 7.8 -> (7.8,∞)

x ≥ 7.8 -> [7.8,∞).

What is Inequality?

Mathematical expressions with inequalities are those in which the two sides are not equal. Contrary to equations, we compare two values in inequality. Less than (or less than or equal to), greater than (or greater than or equal to), or not equal to signs are used in place of the equal sign.

1. x ≤ 7.8

Here the value of is less than equal to 7.8 which means starting from -∞ to 7.8

Thus, the interval is (-∞,7.8]

2. x < 7.8

Here the value of is less than 7.8 which means starting from -∞ to less than 7.8.

Thus, the interval is (-∞,7.8).

3. x > 7.8

Here the value of is greater than 7.8 which means starting from 7.9 to ∞.

Thus, the interval is (7.8,∞)

4. x ≥ 7.8

Here the value of is greater than equal to 7.8 which means starting from 7.8 to ∞.

Thus, the interval is  [7.8,∞).

Learn more about Inequality here:

https://brainly.com/question/30231190

#SPJ7

Two more than a certain number is 15 less than the product of 7/8 and the number. I NEED THE EQUATION AND SOLUTION

Answers

Answer:

x + 2 = 7/8 x  -15

x = -136

Step-by-step explanation:

Two more than a certain number is 15 less than the product of 7/8 and the number.

Let x be the 'certain number'

x + 2 = 7/8 x  -15

x = 7/8 x - 17

1/8 x = -17

x = -136

Answer:

Step-by-step explanation:

the answer is -136

combine k/4 and 5k


pls pls pls pls

Answers

[tex]\dfrac k4 + 5k = \dfrac{k + 20k}4 = \dfrac{21k}4[/tex]

Your answer is 21k/4


I’m very smart. My hair is dark. I love to eat honey, insects, and bark.

Answers

Answer:

the answer to the riddle is black bear

Step-by-step explanation:

hope it helps can I have brain for trying? :))) bless u have a great day/evening

Answer:

the other guy is right it's black bear bears love honey and only one bear is black and thats the black bear

Step-by-step explanation:

The equation of a line is y = 12x - 3. Write the equation of a line parallel to this line.

Answers

Answer:

y=12x+3

Step-by-step explanation:

when parallel the slopes need to be the same but the y-intercept has to change

Pls help fast i need this done
-Angle ACB is bigger than angle GDE
-Angle ACB is smaller than angle GDE
-Angle ACB is the same size as angle GDE
-There isn't enough information to decide

Answers

Answer : -Angle ACB is the same size as angle GDE

Caleb scores 3 more than 2 times the number of points that Brian scores. Create an expression that represents the number of points Caleb scores if Brian scores r points

Answers

Answer:

r = (x·2) + 3

Step-by-step explanation:

1-w+w2 what is complex cube ​

Answers

[tex] \: \: \: \: \: \: [/tex]

[tex]1 + w[/tex]

Step-by-step explanation:

[tex]1 - w + w2[/tex]

use the commutative property to reorder the terms

[tex]1 - w + 2w[/tex]

collect like terms

[tex] = \: \: 1 + w[/tex]

hope it helps

-3/1x+1=10
Somebody answer please

Answers

Answer:

Step-by-step explanation:

3

+

1

1

=

1

0

1

3

=

9

3

3

=

9

3

=

3   answer

P/s: I don’t understand the question so I do it in two ways

Write as expression. The sum of 7, a number, and 8.

Answers

Answer:

7 +X  + 8= Y

Step-by-step explanation:

The sum means addition, and "a number" is going to be replaced by X

express the radical using the imaginary unit i

Answers

Answer:

[tex]i[/tex][tex]\sqrt{30}[/tex]

Step-by-step explanation:

[tex]\sqrt{-30}[/tex]

= [tex]\sqrt{30 * -1}[/tex]      

= [tex]\sqrt{30} * \sqrt{-1}[/tex]   Separate the two numbers into 2 radicals.

= [tex]i\sqrt{30}[/tex]             Simplify, knowing that [tex]i = \sqrt{-1}[/tex].

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