Select the correct answer.
Find the solution(s) for x in the equation below.
x^2+10x+21=0

Answers

Answer 1

Answer:

Hope this helps

Step-by-step explanation:

x= -3, -7

Answer 2

Answer:

x = -7, -3

Step-by-step explanation:

Try to factor the left side of the equation.  

(x +7)(x + 3) = 0    Remember that if AB = 0, then A = 0 or B = 0 or both  A and B = 0

Therefore,  x + 7 = 0  or x + 3 = 0

                        x = -7  or x = -3


Related Questions

Which two statements are true

Answers

Answer:

Only 2nd option is the correct answer.

There is no other correct option given.

Step-by-step explanation:

Hope it helps you in your learning process.

I WILL GIVE BRAINIEST
Rhiana has a spinner, which is divided into four equal parts. The parts are numbered 1,2,3,4. If rhiana spins the spinner and tosses a coin, which table shows all possible outcomes?

Answers

Answer:

the last one

Step-by-step explanation:

Answer:

last one

Step-by-step explanation:

9.Find the side of a cube whose surface area is 5400cmsquare.

Answers

Answer:

a=square root of a/6 = square root of 5600/6 = 30

i would like to have my brainliest naw, thx

The instructions in the kite book state that sin ∠ABC = . Since the two right triangles that make up the kite are congruent, then sin∠CBD = as well. Using the definition of sine, what is AB? Show your work

Answers

Answer:

Exact answer

Step-by-step explanation:

Answer:

Plato

Step-by-step explanation:

sin<ABC= 1/2

AC/AB = 1/2

AC= 60 cm

60/AB= 1/2

AB= 120

Based on the lesson, identify the first operation needed to solve the following equation.

- 3 = 11

multiplication
addition
subtraction
division

Answers

With the given problem there is nothing to solve,the only thing there really is would be determining if it is true which in that case it would be false.hope this helps

Answer:

Im going with B hope this helps

Step-by-step explanation:

3s algebraic expression in word form

Answers

Answer:

trice the number"s"

Step-by-step explanation:

is this   wht  u want ? like am i rght? if not pls delete my answer.

Answer:

Thrice a number

Three times the variable "s"

Step-by-step explanation:

Hope it helps!!!

Marcos debe pintar 5/9 de la cubierta de un velero. Al acabar el día ha pintado 21/36 . ¿Ha conseguido cumplir su objetivo? ¿Ha pintado más? ¿Ha pintado menos?

Answers

Answer:

a) Have you managed to meet your goal?

Yes

b) Have you painted more? Have you painted less?

You have painted more.

Step-by-step explanation:

Marcos should paint 5/9 of the deck of a sailboat.

At the end of the day he painted 21/36.

Reducing this to the simplest form = 21/36

Dividing Numerator and Denominator by 3

= 7/12

Finding the difference between both fractions

= 7/12 - 5/9

The Lowest Common Denominator = 36

= 21 - 20/36

= 1/36

Therefore:

a) Have you managed to meet your goal?

Yes

b) Have you painted more? Have you painted less?

You have painted more.

y=xe^x how do you find the domain of the following function ​

Answers

9514 1404 393

Answer:

  all real numbers

Step-by-step explanation:

Basically, you look for any values of x for which the function is not defined. There are none. So, the domain is "all real numbers."

__

The function is the product of a polynomial (x) and an exponential function (e^x). Each of those kinds of functions has a domain of "all real numbers". Multiplication is also defined for all real numbers, so there is nothing about this product that would restrict the domain.

PLS HELP Its somewhat easy math

Answers

a - 20 inches
b - 29 1/4

WILL GIVE BRAINILEST

The price of ground beef varies directly with the weight of the ground beef purchased. Two pounds of ground beef cost $10.

What is the cost of 3 pounds of ground beef?

Answers

15, 1 ground beef cost $5
The price of 3 pounds would be $15

The sum of twice a number and five is greater than three times the number minus three.

Answers

Answer:

x<8

Step-by-step explanation:

2x+5>3x-3

2x+8>3x

8>x

Answer:

n < 8

Step-by-step explanation:

Let n represent the unknown number.  Then:

2n + 5 > 3n - 3

Collecting like terms:

8 > n or n < 8

The school band is selling t-shirts for a fundraiser. The initial cost for a steamer to apply the decals is $100. It is predicted that the cost of material for each shirt is $12. The function that shows the band's average cost per t-shirt after x t-shirts are sold is:

Answers

Answer: Vertical asymptotes is x = 0 and the horizontal asymptotes is y = 12.

The average cost approaches to 12 when the number of shirts increases.

Step-by-step explanation:

Since we have given that

Initial cost for a steamer to apply the declas = $100

Cost of material for  each shirt = $12

Function representing the band's average cost per t-shirt  after x t-shirt are sold is given by:

We need to find the vertical asymptotes , horizontal asymptotes and the average cost to make a t-shirt approaches as the number of t-shirts increases,

For vertical asymptotes , we will make denominator equal to zero.

So, it will be

Thus, vertical asymptotes is x= 0.

Similarly,

For horizontal asymptotes, we first check the degree of both numerator and denominator.

Since we can see that both have the same degree i.e. 1.

So,

So, the horizontal asymptotes is y = 12.

When the number of shirts increases ,The average cost to make a T-shirt approaches is given by

Hence, the average cost approaches to 12 when the number of shirts increases.

Answer:

The vertical asymptote is x = 0

The horizontal asymptote is y = 12

The average cost to make a t-shirt approaches $12 as the number of t-shirts made increases.

Step-by-step explanation:

THIS IS FOR AN EXAM NEED HELP!!! Directions: Show all your steps as you solve the following problems. Round the solutions to the nearest hundredth if necessary.


7. On a 40‐point test, Steve received an 80%. How many points did he receive on the test?


8. Of the 8760 hours in a year, most televisions are on for 2190 hours. What percent is this?


9. The population of a town increased from 620 to 700. What is the percent of increase?


10. The population of a small town increased 23% from its population in 2000 to its population in 2003.
If the population of the town in 2000 was 25,314, what was its population in 2003?


11. To control his weight, Joel reduced his calorie intake from 2500 calories to 1950 calories each day. What was his percent of decrease for calorie intake?


12. The sales tax in Whittle City is 7%. How much tax is charged on a purchase of $53?


13. What is the simple interest on $2500 invested at an interest rate of 6% for 2 years?


14. Shawn earned a 5% commission on a $500 sale. How much did he earn?


15. Andrew measured the time it took for an apple to fall 50 feet as 1.95 seconds, but his calculations show that it should be 1.77 seconds. What was his experimental error?

Answers

1. 32 points 2. 25% 3. 2,100 4. 22% 5. 56.71 6. $300 7. $25 8. The answer for given problem is -2, but Andrew get -21.6 which is wrong.

Step-by-step explanation: brainliest pls ^^

4x + 3y = -26
x-3y =-14

Answers

Answer:

y = 8       x= -16

Step-by-step explanation:

4x+26x = -6y =14

30x = 14

-6y = 14     x = 14- 30

y+= 14-6  

y = 8       x= -16

A tree is growing at a constant rate. It is recorded that at the 7th year since it was planted it was at a height of 25 feet. It was recorded again at the 10th year since it was planted and it was at a height of 31 feet. How much does the tree grow every year?

Answers

9514 1404 393

Answer:

  2 feet per year

Step-by-step explanation:

In the 3 years between the 7th and 10th, the tree grew 6 feet from 25 ft to 31 ft. The rate of growth is ...

  (6 ft)/(3 yr) = (6/3) ft/yr = 2 ft/yr

(4x2 – 3x + 2) - (x - 5)(x + 5)+ 6x?

Answers

Answer:

The answer is 3x^2 + 3x + 27

Step-by-step explanation:

Simplify the expression.

hoped this helped!

brainly, please?

i make games check me out
https://www.freeriderhd.com/u/thecoykid
click on created tracks and then click on a game to play
who ever tells me how they are AND plays them gets brainliest

Answers

i did it and i’m good today!

Answer:

lolll i love those games rn im playing one abt a lil guy on a bike

What's 4 x 90 divided by 3 x 7?

Answers

Answer:

17.14

Step-by-step explanation:

360/21=17.14

Answer:

(4 × 90) ÷ (3 × 7)

= 360 ÷ 21

= 17.14

Please help me guys

Answers

2nd one its like one big right angle so must add to 90
So (x+9)+2x=90
(x+9) + 2x = 90
Explanation: (x+9) and 2x are two angles inside the 90 degree angle. Therefore if they are added together they will make the 90 degrees.

If c=10\pic=10π, what does 10 represent?

Answers

Answer:

10 is the dimeter of the circle

Step-by-step explanation:

The question seems is:If C = 10π, what does 10 represent?

The circumference of a circle formula is:

C = 2πr or C = πd

10 in the given equation represents the diameter of the circle, d = 10

Given the 2 equations, solve for x, when the y's are equal.

y=2x+4 y=x+1

Answers

Answer:

x=-3

Step-by-step explanation:

2x+4=x+1

-x      -x

x+4=1

 -4  -4

x=-3

-3
correct if wrong

Urgent please help..

Answers

Answer:

Dilation means a facor of So b=(-1,1) × 2= b'=(-2,2) I do exams and quizzes if your interested

Answer:

(-2,2)

Step-by-step explanation:

Original is (-1,1) so just multiply by 2 so (-2,2)

Can someone please help me with this

Answers

Answer:

D

Step-by-step explanation:

A has the rate of change of 3

B has the rate of change of 5

C has the rate of change of 9

D has the rate of change of 20

A has a rate of change of 3
B has a rate of change of 5
C has a rate of change of 9
D has a rate of change of 20

Therefore D has the highest rate of change. Hope this helps! :)

Jika 5log2 = x dan 5log6 = y, maka nilai 4log150 adalah​

Answers

Menjawab:

y + 2x

Penjelasan langkah demi langkah:

Menulis ulang pertanyaannya

4log5 = x

4log 6 = y

4 log 150 = 4log (2 * 3 * 5 * 5)

= 4log 6 + 4log 5 + 4log 5

Substrat

= y + x + x

= y + 2x

Oleh karena itu ekspresi yang dibutuhkan adalah y + 2x

Which system of inequalities does the graph represent? Which test point satisfies both of the inequalities in that system?



The graph represents the system of inequalities .
The test point satisfies both of the inequalities in the system represented by the graph.

Answers

Answer:

Ok so its -3;3

Step-by-step explanation:

Select all expressions that are equivalent to 16x − 12 − 24x + 4 by showing your work & explain your reasoning. 1)40x - 16 2)4 - 12 - 4x + (- 4x) 3) 8x - 8 4)-8 (r + 1)

Answers

Answer:

4 - 12 - 4x + (- 4x)

-8 (x + 1)

Step-by-step explanation:

16x - 12 - 24x + 4

16x - 24x - 12 + 4

-8x - 8

1)40x - 16 = not equivalent

2)4 - 12 - 4x + (- 4x)

4 - 12 - 4x - 4x

-8 - 8x = - 8x - 8 (equivalent)

3) 8x - 8 (not equivalent)

4)-8 (x + 1) = - 8x - 8 (equivalent)

Find each slope and y-intercept. Then graph each equation.​

Answers

Answer:

1/2= slope

-3= y-intercept

Step-by-step explanation:

According to the formula, y=mx-b:

b= y-interceptm= slope

What angle relationship best describes angles AFC and DFB?

A) Adjacent angles
B) Complementary angles
C) Linear pairs
D) Vertical angles ​

Answers

Answer:

Vertical Angles

Step-by-step

I believe this is the case because since the angles intercept in order to form also it's the only answer that has to do with intercepting from what we can see from the diagram.

There are different types of relationships between angles including alternate, corresponding, vertical, adjacent, complementary and supplementary angles

The correct option for the relationship that best describes angles AFC and DFB is option D;

D) Vertical angles

The reason the chosen option is correct is as follows;

The given diagram shows line EF perpendicular to line AB and line CD crosses line AB at point F

Therefore, the angles ∠AFC and ∠DFB formed by lines AB and CD with their orientation in the order of their names are opposite to each other and other are known as vertical angles

Learn more about vertical angles here:

https://brainly.com/question/18292462

Transversal relations

Answers

Answer:

The answer is 75

Step-by-step explanation:

By way of parallelism

[tex]x + 15 = 90 \\ x = 75[/tex]

the answer is 75 for this problem

show how to rewrite 1/5 with the denominator 10.

Answers

Answer:

first blank: 2

second blank: 2

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