Your classmate says that the solutions to the given inequality are x > -2. Look carefully at the work. Should your friend have reversed the inequality​ symbol? Explain. Then solve the inequality correctly.

Please don't send those annoying files, I'm not trying to get a virus on my laptop. Please, if you can, just write out the steps/answer(s).

Your Classmate Says That The Solutions To The Given Inequality Are X > -2. Look Carefully At The Work.

Answers

Answer 1

Answer:

x < -2 (No, he shouldn't have reversed the inequality symbol).

Step-by-step explanation:

Given the algebraic expression;

19 - 2(1 - x) < 13

Opening up the bracket, we have;

19 + (-2*1) + (-2*-x) < 13

19 + (-2) + (2x) < 13

19 - 2 + 2x < 13

17 + 2x < 13

Rearranging the equation, we have;

2x < 13 - 17

2x < -4

Dividing both sides by 2, we have;

x < -2

Hence, your friend shouldn't have reversed the inequality symbol (sign).

Note: you should only flip the inequality symbol (sign) when you're dividing by a negative number such as -2.

For example, if we had re-arranged the equation as;

17 - 13 < -2x

4 < -2x

Dividing both sides by -2, we have;

4 > x


Related Questions

The question is down below

Answers

Answer:

The volume at the highest point is 64 times greater

Step-by-step explanation:

Mathematically, the volume of a sphere is simply the same formula irrespective of the size

Now, we have the formula as;

V = 4/3 * pi * r^3

While the 4/3 pi is a constant term, the value of r changes

initially we have the value of r as d = 2

where r is the radius and d is the diameter

we have this as;

8/2 = 4 ft

r^3 of this is 4^3 = 64

For the second part, we have

r as 32/2 = 16 ft

now, the r^3 part here is 16^3 = 4096

So now, we have to divide the final by the initial

we have this as 4096/64 = 64

So the volume at the highest point is 64 times greater

plz help what is the slope of this line shown?

Answers

Answer:

slope= -3

Step-by-step explanation:

i hope this helps :)

Factor the expression completely. 60x^3+50x^5

Answers

Answer: 10x^3(6+5x^2)

solve each system by substitution
-x+y=4
3x-2y=-3

Answers

y= 9
x = 5
good luck /)))))

Find the inverse of the function.
f (x) = (x - 5)3=

Answers

Answer:

i think its  (x - 5)3 = (x) f

Step-by-step explanation:

Helpppppp againnn plzzz

Answers

Answer:

x=8.17

Step-by-step explanation:

uztstskycuvkhifig

Answer:

x = 8.17

Step-by-step explanation:

We will be using pythagoras theorem:

[tex]a^{2} + b^{2} = c^{2}[/tex]

=> [tex]4.25^{2} + x^{2} = 9.21^{2}[/tex]

=> [tex]x^{2}[/tex] = 84.8241 - 18.0625 = 66.7616

=> x = [tex]\sqrt{66.7616}[/tex] = 8.17077719.. = 8.17 (3 s.f)

Pls help I will give branlist answer on the best one


Don’t explain it just strait up give me the answer for 1,2 and 3

Answers

Answer:

Plz explain how to do this. Do I put numbers or what?

Step-by-step explanation:

When you tell me, I'll answer! <3

A coin is flipped 8 times. Find the probability of the event: exactly 3 heads​

Answers

Answer:

The probability of the coin landing on heads 3 out of 8 times is 0.22, but the closest thing to that is 0.219.

Answer:

Step-by-step explanation:

The answer is exactly 0.219

You have 8 objects and you want to choose 3 of them. 8 Choose 3 looks like

8 * 7 * 6 / 3!

3! = 6

So the answer is 8*7 = 56

There are 2^8 = 256 ways you can throw either heads or tails.

The number of successes = 56/256 = 0.219 The nine is rounded.

Translate this sentence into an equation. 53 is the sum of 10 and Malik's savings. Use the variable m to represent Malik's savings.

Answers

Answer:

m+10=53

Step-by-step explanation:

maliks savings=43


The area of a rectangular field is 99m2. The length of one side is
11m. The farmer needs to know its perimeter to work out how
much fencing will be needed? Help

Answers

Answer:

40 m

Step-by-step explanation:

The length of another side

= 99÷11

= 9 m

The perimeter of the field

= 9×2 + 11×2

= 40 m

Answer:

40 m

Step-by-step explanation:

Hi there!

What we know:

The field is rectangularA = 99 m²Length of one side = 11 m

1) Find the length of the other side

Plug all the given information into the area formula for a rectangle:

[tex]A=lw[/tex] where A is the area, l is the length and w is the width

[tex]99=11w[/tex]

Divide both sides by 11 to isolate w

[tex]\frac{99}{11} = \frac{11w}{11} \\9=w[/tex]

Therefore, the width of the field is 9 m.

2) Find the perimeter of the field

[tex]P=2(l+w)[/tex] where l is the length and w is the width

Plug in the length (11 m) and the width (9 m)

[tex]P=2(11+9)\\P=2(20)\\P=40[/tex]

Therefore, the perimeter of the field is 40 m.

I hope this helps!

Write the equation of the line passing
through the point (2, -1) with a slope of -3.

Answers

Answer:

y = -3x + 5

Step-by-step explanation:

(2, -1); m = -3

y - y1 = m(x - x1)

y + 1 = -3(x - 2)

y + 1 = -3x + 6

y = -3x + 5

7)
A rectangular container is 40 cm by 30 cm by 25 cm. It is filled with
3
water up to 5
of its height. Half of the water is then poured out. How
much water is left in the container? Give your answer in litres.​

Answers

Answer: 9 L

Step-by-step explanation:

Given

The dimension of the rectangular container is [tex]40\times 30\times 25\ cm^3[/tex]

It is filled with [tex]\frac{3}{5}[/tex] of the height

Water present in the container

[tex]\Rightarrow 40\times 30\times 25\times \dfrac{3}{5}\\\\\Rightarrow 18000\ cm^3[/tex]

Also, [tex]1\ L=1000\ cm^3[/tex]

[tex]\therefore 18,000\ cm^3=18\ L[/tex]

Now, half of the water is poured out

So, half is left

[tex]\Rightarrow \dfrac{18}{2}=9\ L[/tex]

Thus, 9 L of water is left in the container

What is the arc length if θ = 6 pi over 5 and the radius is 2 cm? (1 point)

Answers

the answer is 7.536 cm

PLEASE HELP!!! There is a zombie apocalypse and Rick and Daryll decide to go zombie hunting. They begin by walking 100 yards north from their base then they hear something to the right. They make a 90 degree turn to the right and walk another 100 yards. Rick and Daryll don't want to go too far from where they started. How far are they from their starting point?

Answers

Answer:

they should be either 150 yards away or 200 yards away.

Step-by-step explanation:

Btw The walking dead was a good choice

PLZZZZZ HELPPP ILL GIVE BRAINLIEST

Answers

Answer:

340

Step-by-step explanation:

Answer:

100-60

Step-by-step explanation:

Used special calculater for this kind of problem.  

– x + 7 = 13
X = ?
What is X

Answers

X = -6

-x + 7 = 13, subtract 7 from both sides.
then you have -x = 6, and you have to device by negative 1 on both sides because you can’t have a negative x value. then you have x = -6.
hope this helps!

Hi! brainliest giving :)))
Find the volume of a cone with a base circumference of 17π m and a height 4 m less than twice the radius. Give your answer both in terms of π and rounded to the nearest tenth.

Answers

this is the answer:)

The ratio of boys to girls in a volleyball club was 6: 8. There were 36 boys.

How many girls were there in the club?

Answers

Answer:

Might be wrong but 27. Hope this helps

Answer:

48 girls!

Step-by-step explanation:

boys = 6x

girls = 8x

6x = 36

x = 36/6 = 6

girls = 8x = 8 x 6 =  48

I hope im right!

A local company had revenues of $2,800 last year. They spent 1/4 of their revenues on marketing and 1/7 of the remaining money on upgrading their facilities. How much money did they have left after marketing and upgrading the facilities? Group of answer choices

Answers

Answer:

$1,800

Step-by-step explanation:

Given

Total revenue last year = $2,800

If they spent 1/4 of their revenues on marketing;

Amount spent on marketing = 1/4 * 2800

Amount spent on marketing = $700

Remaining money = 2800 - 700

Remaining money = $2100

If 1/7 of the remaining money is spent on upgrading their facilities, then;

Amount spent on upgrading facilities = 1/7 * 2100

Amount spent on upgrading facilities = $300

Total amount spent on marketing and facilities  = $700 + $300

Total amount spent on marketing and facilities  = $1000

Amount left = $2,800 - $1,000

Amount left = $1,800

Solve for X.

Then, Solve for Y.

Answers

Step-by-step explanation:

Refer to attachment.

Hope it helps :D

First solved for x, then for y [tex].[/tex]

Evaluate:

12×2.4×2.4×7=

Answers

Answer:

483.84

Step-by-step explanation:

Answer:

483.84

Step-by-step explanation:

PLZZ HELP WITH THIS HOMEWORK

Answers

These are the answers to it

what is the quotient when the fraction 1/3 is divided by the whole number 6?

Answers

Answer:

[tex]\frac{1}{18}[/tex]

Step-by-step explanation:

d. You can multiply cand 8
by in 1(c + 8) to find
an equivalent expression. True
False

Answers

Answer:

i don't think you can (but i could be wrong)

Step-by-step explanation:

my thinking is that since there is still an unknown variable even after you've multiplied that there can't be an equivalent expression

1(c+8)*8

=?

good luck :)

i hope this helps

**please let me know if this was incorrect**

have a nice day!

what does the word "solution" mean has to be in your own words please help ​

Answers

Answer:

an answer to a problem

Step-by-step explanation:

Solve these equations: tan^2x-3tanx+2=0

Answers

Let u be the value of tan(x) and that the equation above may also be written as,
u² - 3u + 2 = 0
The equation can be factored as follows,
(u - 1)(u - 2) = 0
u - 1 = 0 ; u = 1 and u - 2 = 0 ; u = 2
Thus, tangent(x) = 1 and tangent(x) = 2. The values of x are 45° and 63.43°.

12. The variable in the expression 9x + 63 is ? * A. =
B. 9
C. x
D. 36​

Answers

Answer:

C. x is the variable

Step-by-step explanation:

easy...

C. X is the variable expression

A golf ball is hit in not the air represented by the equation y= -3x^2+18x+45. The maximum height the ball will reach is____ feet

Answers

Answer:

72 ft

Step-by-step explanation:

Here, we want to get the maximum height the ball will reach

the maximum height the ball will reach is equal to the y-coordinate of the vertex of the equation

So we need firstly, the vertex of the given quadratic equation

The vertex can be obtained by the use of plot of the graph

By doing this, we have it that the vertex is at the point (3,72)

Thus, we can conclude that the maximum height the ball can reach is 72 ft

I can't figure this out and didn't see it on brainly, pls help​

Answers

Answer:

it's 8

Step-by-step explanation:

(10×1/5)^3=2^3=8

Answer:

The answer is 8!

Step-by-step explanation:

Subtract the like terms.  As you can see, the 10 in the numerator and denominator have the same base.  Therefore, you can subtract the exponents, which would be 10^1, or 10.  You would do the same for 5, which would be 5^-1, or 1/5.  You would then make this one fraction, the 10 and 5.  The fraction would be 10/5, or 2 once simplified.  Now, don't forget the outside parentheses!  You would do 2^3, and your final answer would be 8.  Hope this helps!


solve for x PLEASE HELP

Answers

Answer:

x=5

Step-by-step explanation:

11^X=11²×11³

11^X=11^5

x=5

Answer:

Anwer is x=5

Step-by-step explanation:

11^x-3=11

11^x-3= 121

x-3=2

add 3 both side

x=5 help this help 5 star please :)

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