Explain why x2+7x+4=7x has no solutions.

Answers

Answer 1

[tex]x^2+7x+4=7x[/tex]

[tex]x^2+4=0[/tex]

[tex]x^2=-4[/tex]

Square of any real number cannot be negative because - * - = + so this equation has no solutions


Related Questions

What is 38 + 7k = 8(k + 4)

Answers

Steps

38 + 7k = 8k + 32

38 + 7k - 38 = 8k + 32 - 38

7k = 8k - 6

7k - 8k = 8k - 6 - 8k

-k = -6

-k/-1 = -6/-1

k = 6

Answer

k = 6

what is If 1/2 a pound of walnuts cost $3.25. home much is one pound of walnuts?

Answers

Answer:

6.50

Step-by-step explanation:

just do 3.25 times 2 hope it helps

Your answer would be 6.50

Write as an equation and solve.

On Monday, Ken spent half of his money on
a new game. The next day he earned
$12 mowing lawns. He now has $32. How much money did Ken have before he
bought the game?

Answers

Answer:

$40

Step-by-step explanation:

2(32-12)=40

hope this helps

X = his money
Y = half of his money
X = 2Y & Y = 1/2X

He earned $12 mowing lawn, and that, added to the other half of his money gives $32

As an equation, 32 = Y + 12
So Y = 32 - 12 if we takeaway 12 from both sides.
Therefore, Y = 20 and since X = 2Y, X = 2 x 20 which gives 40
Ken initially had $40

I know the question has been answered already but I thought I’d provide some extra explanations ((:

Take care ;)


Pls helppppppppppp!!!!

Answers

Place your mouse on 21 and 18

Solve the following expression

k=6 and c = 2


5 x k - 10c + 8

Answers

Answer:

the answer is 18

Step-by-step explanation:

5×6-10(2)+8

=30-20+8

=18

I WILL MARK BRAINLIST PLS HELP

Answers

Answer:

a is parallel b

then

10x-23=27

10x=23+27=50

x=50÷10=5


pls help asaploll!!!!

Answers

Answer:

11/15

Step-by-step explanation:

Answer:

- 11 / 15

Step-by-step explanation:

x = - 2

y = - 1 / 5

1 / 3 + x . z

= 1 / 3 + ( - 2 ) . ( - 1 / 5 )

= 1 / 3 + ( - 2 . - 1 ) / 5

= 1 / 3 + 2 / 5

1 / 3

= ( 1 / 3 ) x ( 5 / 5 )

= ( 1 x 5 ) / ( 3 x 5 )

= 5 / 15

2 / 5

= ( 2 / 5 ) x ( 3 / 3 )

= ( 2 x 3 ) / ( 5 x 3 )

= 6 / 15

1 / 3 + 2 / 5

= 5 / 15 + 6 / 15

= ( 5 + 6 ) / 15

= 11 / 15

what is the answer to 1/10 + 1/6

Answers

1/10 + 1/6 = 4/15
4/15 is the answer

Answer:

4/15

which simplifies to :  

0.267

Step-by-step explanation:

Hope this helps :)

pls mark as brainliest :p

And have an amazing day <3

Find the discount on a leather recliner with a regular price of $240 if the recliner is 10% off. What is the sale price of the recliner?
The discount on the leather recliner is $___

Answers

Answer:

Sale price = $216, Discount = 24$

Step-by-step explanation:

100%-10%=90%

240 x .90 = $216 (sale price)

240-216 = $24 off

Write 10 9 as a decimal. Round to the nearest thousandth if necessary.

Answers

Answer:

If you mean 10/9 then the answer should be 1.1 repeating itself

Step-by-step explanation:

Answer:

1.111

Step-by-step explanation:

10/9 = 1.111

( i rounded 10/9 to a decimal)

am not 100% about this but hope it help

help me with this:((((​

Answers

Activity 3
1) 2m^2(4m^2 + 3m + 2)
2) (x + 4)^2 (x - 4)
3) (x + 9)(x - 7)
4) 5y(17y - 4z)
5) (2x - y)(6x + 5y)

Activity 4
1) 80 units because when you sub h = 9, you get 400 as the answer and because it’s a square, you square root 400 which is 20 units per side.
2) x = 7cm because when you multiply (x + 5)(x - 3), you get x^2 + 2x - 15 = 48 and when you solve it you get x is equal to 7, -9, because the length of the rectangle is positive x is equal to 7.
3) the binomial would be (9x + 1)^2.

A contractor is creating a playground that has an area of 336 square meters. What is the approximate length of the side of the playground (round answer to the nearest meter). Is the playground a square? Explain.

Answers

Answer:

18m

Step-by-step explanation:

336*2 = area

area of square = base x height (both base and height have to be equal lengths)

sqrt. 336 = 18.33m = 1 side

the jenkins family drinks 3/4 of a gallon of orange juice every 3 days. how much orange juice do they drink per day?

Answers

Answer:

1/4 gallon per day

Step-by-step explanation:

Find the 'unit rate:' the measure of juice drunken daily.  To do this, divide '3/4 gallon' by '3 days:"

 3/4 gallon

------------------- = 1/4 gallon per day

    3 days

Identify the range of the function shown in the graph.

Answers

Answer:

The answer is y ≥ 0

Find x, PLEASE HELP!
25 points in it for you, brainliest, thanks and a 5 star (need it quick)

Answers

A right triangle with 45 degree angles mean bot the height and the base are the same, so Y would be 9.

The hypotenuse, which is labeled x is the length of the side multiplied by the square toot of 2.

Answer: X = 9√2

I NEED HELP ASAP PLEASE NO LINKS!!!

Answers

Answer:

1/8

Step-by-step explanation:

I looked it up lol

Answer:

1/8

Step-by-step explanation:

2^-3

= 1/2^3 ( The reciprocal of the negative exponent is positive).

= 1/8

3y = x - 12
Y= 1/3X -4
parallel, perpendicular or neither

Answers

Answer:

PARALLEL

Step-by-step explanation:

The second equation, y = (1/3)x - 4, has already been solved for y.  To compare the slopes easily, we need now to solve the first equation for y, obtaining y = (1/3)x - 4.

We see that these two lines have the same slope, m = 1/3, and thus conclude that these lines are PARALLEL.

The function f(x)=260−55 x represents the distance, in miles, remaining on a trip x hours into the trip. What is the value of f(3)

Answers

F(3) means what is the value of the function when x=3. Therefore, plug 3 into the equation and you will have the answer. F(3)= 260-55(3) = 260-165 = 95.

95 miles.

please someone help me. Im giving brainliest!

Answers

10x-45-4x-2

6x- 47= 1

6x=1+47

6x=48

x=8

PLEASE MARK BRAINLIEST

Answer:

10x-45-4x-2

6x- 47= 1

6x=1+47

6x=48

x=8

Roberta is shopping at a bookstore. She starts with some money in her wallet, uses only cash

to make her purchases, and finishes her shopping trip with no money left. Select each

response that correctly completes the statement below.

Roberta starts wtih $50.00 in her wallet and buys 5 books for

and 4 magazines for

(1 Point)

$10.00 per book

$8.00 per book

$2.00 per book

$10.00 per magazine

$8.00 per magazine

$2.50 per magazine

Answers

Answer:

roberta starts with 50 dollars in her wallet

Step-by-step explanation:

What is 9 - 2 to the power 2 to the power of 4 / 4 + 3 to the power of 5

Answers

Answer:

what is 3x to the power of 2 ×4x to the power of 5

A manufacturer of stereo sound speakers has found that the revenue received from selling the speakers at a
cost of p dollars each is given by the polynomial – 3p2 + 610p. Find the revenue received when p
dollars.
50

Answers

Answer:

50

Step-by-step explanation:

-3p2+610p     p=50

-3(50)2+610(50)

-3x50^2+610x50

50(-3x50+610)

50(-610+610)

50x0

50

HELP!
Choose all that give the correct expression for the quantity described.
The difference of nine times a number x and the quotient of that number and 5.
9x − x over 5
Eight more than the quotient of twelve and a number n.
n over 12 + 8
The product of a number and the quantity ’six minus the number’ plus the quotient of eight and the number.
x(6 − x) + 8 over x
Sum of three consecutive even integers.2x + (2x + 2) + (2x + 4)

Answers

uhm that’s confusing i have no idea

Answer:

did u ever get on answer cause I'm stuck in this too

Step-by-step explanation:

The number of cable TV systems recently decreased from 14,700 to 14,510. Find the percent decrease.

Answers

Answer:

The answer to this question is, 1.29252% decrease.

Step-by-step explanation:

[ (Starting Value - Final Value) / |Starting Value| ] × 100

14,700-14,510 x 100

190/14,700 x 100

0.01292517006 x 100

1.2925170068

1.29252%

Help Will give branliest!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

4=-x+2 - model 1.

3x-1=7 - model 2.

-5+2x=3 - model 6.

5+2x=-3 - model 3.

-4=2x+1 - model 5.

-3x+1=7 - model 4.

Find the value of x.

Answers

So you know that all the angles in a triangle must add up to 180. Therefore, you can make this equation:

[tex](-20x+3)+(-40x+18)+(-15x+9)=180[/tex]

And now just solve for x!

[tex]-75x+30=180\\-75x=160\\x=\frac{160}{-75}\\x=-2.4[/tex]

So, your answer is:

x = -2.4

The value of X
X = -2.4

Can someone help me do this

Answers

Answer:

See below

Step-by-step explanation:

It's hard to see your photo but if that say m∠T than your answer would be

m∠ L.

The drawings are saying the the triangles are congruent which means all the interior angles of one triangle are congruent to the angles of the second triangle.    m∠M = m∠J,   m∠K = m∠E and m∠L = m∠T

Since you have two of the angles, you can also determine what m∠L and m∠T is equal to.  The sum on all interior angles must be 180 degrees.

180 - 86 - 32 = 62

Angle L is the what you should put for your answer

Use the point-slope formula to write an equation of the line that passes through (-5, -4) and (3, -1).
Write the answer in slope-intercept form (if possible).

Answers

Answer:

point slope form: y + 4 = 3/8 (x + 5)       slope intercept: y = 3/8x - 17/8

Step-by-step explanation:

y2 - y1 / x2 - x1

-1 - (-4) / 3 - (-5)

slope = 3/8

y + 4 = 3/8 (x + 5)

y = 3/8x + b

-1 = 3/8(3) + b

-1 = 9/8 + b

-17/8

y = 3/8x - 17/8

Please help quick! Find the length of the third side. If necessary, write in simplest radical form.

Answers

4^2 + 7^2 = 65
Sqrt(65) is in simplest radical form

The answer is sqrt(65)

th answer is srqt(65) srqt)65)

two lines are perpendicular if they meet at an angle of

Answers

Answer:

90 degrees.

Step-by-step explanation:

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