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

Nancy's Bagel Shop recorded the number of bagels it recently sold of each type.
plain bagels 3
raisin bagels 1
sesame seed bagels 5
pumpernickel bagels 2
whole wheat bagels 4

Considering this data, how many of the next 20 bagels sold should you expect to be plain bagels?

Answers

Answer:

Step-by-step explanation:

Sum and Divide

Which statement correctly explains weather the equation y = x^2 - 2 represents a function ?

Answers

The answer is c

Took the test

Mathhhhhhhhhhhhhhhhhhhh

Which statement applies?

Answers

Answer:

it is the first one because you would be deciding by 2

CAN SOMEONE PLZ HELP ME?? PLZ DO YOU KNOW ABOUT Coordinate Planes??!! plzzzzzz help

Answers

Answer:

Step-by-step explanation:

Line f is 4 units from the x-axis.

PLEEEEEEEEEEEASE HELP WITH SCALE FACTOR IF YOU KNOW!! I WILL MARK BRAINLIEST IF RIGHT!!! Explain!!!!!!!

Answers

Answer:

The area is 256

Step-by-step explanation:

she forgot to square her scale factor because that's how you do it for area

Answer:

256

hope it helps

please mark brain list

WILL GIVE BRAINLIEST TO CORRECT ANSWER!
Priya and Han plan a fundraiser for the running club. They begin with a balance of -80 because of expenses. In the first hour of the fundraiser they collect equal donations from 9 parents, which brings their balance to -44. How much did each parent give?

Answers

Answer: 4

Step-by-step explanation:

First we need to find the difference of the balance.

it was -80 then it became -44. The difference is 36.

Next we divide 36 by 9 from the 9 parents.

The answer is 4

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Answers

Hope this helps youuuuu

(lg 5)²+(lg 2)(lg 50)
need solution....

Answers

-125g ^2 that’s what I got solving for it

Find m

A. 30°

B. 16.3°

C. 73.7°

D. 60°

Answers

I’m not sure but I think it’s D

Please help I will mark brainiest answer

Answers

$122 for 10 necklaces

You're in the market for a new car. You noticed a car advertised as being 4,400 pounds. How many tons does this car weigh?
help asap!

Answers

Answer:

2.2 tons

Step-by-step explanation:

1 pound = 0.0005 tons

You have to multiply 4400 pounds by 0.0005 to get tons:

4400(0.0005) = 2.2 tons

Answer:

2.2 Tons

Step-by-step explanation:

You just have to see how many tons is in 4,400 pounds.

After reviewing your model stock list, you discover a changing sales pattern over the last several months on the most popular style of jeans. The data note the following sales per month: August-75 units, September-95 units, October-130 units. Assuming your sales continue to grow at the avereage rate they did between August and October, what will your sales be in November?

a) 90
b) 105
c) 106
d) 158

Answers

Answer:

158

Step-by-step explanation:

If the average rate between August and October was on an increase, then November sales will be 158.

What is Rate?

This is defined as the quantity or amount of something which is measured per unit of something else.

From the stock list, the average rate kept increasing which means option D is the most appropriate choice.

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Someone please help me with this!!

Answers

Answer:

D is the answer

Step-by-step explanation:

Hope that helps

D is your answer today

Help, I need this now

Answers

Answer:

D is correct

Step-by-step explanation:

i did it

How do i do this please

Answers

1. 10 1/2

2. 120

3. 12

Hope this helps =]

How many elements does this matrix have?

Answers

Answer:

i think 6 because it has 3 rows and 2 columns that's 3 rows with 2 elements and that equals up to 6 hope that help

I need help. The due date is April 21, 2021 11:00pm

3=y
2y + 2x = 8

The Options:

A. (1,3)
B. (3,1)
C. (0,8)
D. (2,2)

Answers

the answer is B

if y = 3 then
2 (3) = 6
2 (1) = 2
6 + 2 = 8

4. MN has an equation of 2x - y = 3. Which of the following is the equation of a line
perpendicular to MN and passes through the point (4,3)?
A.
1
y = --X-5
2
C, y = -x-
2
B.
y = -2x-5
D. y = -x + 5
2

Answers

I think the answer is C

I need an answer NOT A LINK! ASAP

Answers

Answer:

D. No, because group A is already the control group.

PLEASE HELP! BEST GET'S BRAINLIEST!

Answers

Answer:

i think 1996 but i don't know if your adding subtracting but i add and i got 1996

If x = 2 and y=5, what is the value of the expression below?
7x + y2
a. 24
b. 39
c. 82
d. 97

Answers

Explanation
Answer:25

what is 100 + 84 – 62x = 494

Answers

Answer:

X= -5

Step-by-step explanation:

Good luck!

Answer:

X=-5

Step-by-step explanation:

100 + 84 - 62x =494

184 - 62x =494

494-184 = -62x

310 =-62x

310/-62 =x

X= -5

What is the value of x in the diagram?
A right angled triangle with base 2x+2, altitude x and hypotenuse 2x+3.

Answers

Answer:

x = 5

Step-by-step explanation:

x² + (2x+2)² = (2x+3)²

x² + 4x² + 8x + 4 = 4x² + 12x + 9

x² - 4x - 5 = 0

(x - 5)(x + 1) = 0

x = -1 This can be discounted as the answer because you cannot have a negative length

answer: x = 5

What is the slope of line b?

2

Answers

The answer is letter C. (1/2)

Answer:

C. [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

Hope this helps!

This formula is used to calculate the area of a circle using the diameter:

A= 1/4πd².

Rearrange the formula to calculate the diameter of a circle.
d = _____

Answers

Answer:

d= 2√a/π

To calculate the diameter, rewrite the formula to isolate D

Because a negative diameter doesn’t make sense, eliminate the negative answer from the solution

Simplify further to get the solution

The formula to calculate the diameter of the circle is d = 2 √( A/π )

where d = diameter of the circle

A = area of the circle

What is a Circle?

A circle is a closed two-dimensional figure in which the set of all the points in the plane is equidistant from a given point called “center”. Every line that passes through the circle forms the line of reflection symmetry. Also, the circle has rotational symmetry around the center for every angle

The perimeter of circle = 2πr

The area of the circle = πr²

where r is the radius of the circle

The standard form of a circle is

( x - h )² + ( y - k )² = r²,

where r is the radius of the circle and (h,k) is the center of the circle

Given data ,

Let the radius of the circle be = r

So , the diameter of the circle = 2r

Now , the area of the circle = πr²

Substituting the value for r , we get

Area of the circle = ( 1/4 ) πd²

So , A = ( 1/4 ) πd²

Now , solving the equation for diameter of circle d , we get

Multiply by 4 on both sides of the equation , we get

πd² = 4A

Divide by π on both sides of the equation , we get

d² = 4A/π

Taking square roots on both sides of the equation , we get

d = 2 √A/π

Therefore , the value of d is 2 √A/π

Hence ,

The formula to calculate the diameter of the circle is d = 2 √( A/π )

where d = diameter of the circle

A = area of the circle

To learn more about circle click :

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If y varies directly with x, and y =9 when x=3, what is x when y=15

Answers

directly varies for that mean if y increases x will increase too and the other way around if y decreases x will decrease too.

an easy way to solve this is to make all values into fraction ik it sounds confusing lemme explain it. so if we say [tex]\frac{x}{y}[/tex] and add the values of the known [tex]\frac{3}{9}[/tex] we can say that if [tex]\frac{x}{15}[/tex] is equal to [tex]\frac{3}{9}[/tex]

now we just solve it for x

[tex]\frac{x}{15} = \frac{3}{9} \\9x = 45\\x= 5[/tex]

hence when y is 15 x will be 5

All edge are 8 cm in length. What’s the surface area?

Answers

Answer:

192

Step-by-step explanation:

This is because its a square and all the sides on a square are equal so it would be:

top/bottom= 8*8

left/ right= 8*8

front/ back= 8*8

all equal 64 then you do 64*64*64 to get 192!

Hope this helped!

the surface area is 192 i believe not 100% though

what are these??

Find x. Simplify the Radical or Round to the nearest.

Answers

a2 + b2 = c2

Number 1 is 15.1986.... or 15.2

Explanation: 5 squared is 25 and 16 squared is 256. Subtract 256 minus 25 to get 231, then divide it by the square root.

Number 2 is 7.21111.... or 7.2
Explanation: 6 squared plus 4 squared is 52, square root of 52= 7.2

Hi I just have a lot to mark my over use cos tin

Brain Teaser! Will be posting till I run out! Winner gets a brainliest!

Question: Find the area of the red triangle.

Answers

Answer:

i tried

Step-by-step explanation:

im suppose to be gifted... it took me 20 minutes and im in 9th grade RIP, but is it 9??

During the past 7 weeks digo spent between 11 and 17 for much lunch each week

Answers

This is not a proper question. Try adding some more information so that it can be solved!

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