Mathematics High School

Which are solutions of the equation x2 - 16 = 0? Check all that apply.
O x=-8
O x=-4
O x= -2
O x=2
Ox=4
O x=8

Answers

Answer 1
Last one
Because you have to substitute it
So you do X times 2 - 16 = 0
And the only X that works is the last one cause 8 X 2 = 16 and 16 -16=0
Answer 2

The solutions of the given equation are x=4 and x=-4. Therefore, options B and E are the correct answers.

What is the solution of a quadratic equation?

The solutions to the quadratic equation are the values of the unknown variable x, which satisfy the equation. These solutions are called roots or zeros of quadratic equations. The roots of any polynomial are the solutions for the given equation.

The given quadratic equation is x²-16=0.

Here, x²=16

x=±√16

x=±4

So, the solutions are x=4 and x=-4.

Therefore, options B and E are the correct answers.

To learn more about the solution of quadratic equation visit:

https://brainly.com/question/18305483.

#SPJ7

Related Questions

A restaurant charges a standard price for a plain cheese pizza, plus
an extra charge for each topping. The cost of a pizza can be
determined by the function C(t) = 0.50 + 5, where t is the number of
toppings and C() is the cost of the pizza.
3
If (t) $7.50, how many toppings were ordered

Answers

Answer:

5

Step-by-step explanation:

if you could anwser the second question that would be great caus e i only get to do this proble once :) no explanation needed

Answers

Angle 1 and 2 are equal because of correspondence angle

so , (78-2x) = (89-3x)

x = 89 - 78

x = 11

hence angle 1 = ( 78 - 2*11) = 56

and angle 2 = ( 89-3*11) = 56

So, both of angle is 56

hope it help and your day will full of happiness

Answer ASAP plsss :c , due in 9 mins !

Answers

Answer:

x = 2

Step-by-step explanation:

Can someone help me please I need both answers

Answers

Answer:

1: 2, 2: 3

Step-by-step explanation:

1 is 2 because if you count the total students, (25), divide by 2 to get 12.5 and round down. we want to find the 12th number. For the second one, do the similar thing, but now we have 13. Add the 13th and 14th numbers and divide by 2 to get 3.

What is the equation of a line that passes through (-2, 1) and has a slope of -5/2 ?

Answers

Answer:

y=-5/2x-4

Step-by-step explanation:

y-y1=m(x-x1)

y-1=-5/2(x-(-2))

y-1=-5/2(x+2)

y=-5/2(x+2)+1

y=-5/2x-10/2+1

y=-5/2x-5+1

y=-5/2x-4

2x + y = 5
4x + 2y = 0
Elimination

Answers

there is no solution

If x= -4 and y=-8, which expression would have a negative value?

A: x+y
B: x-y
C: x*y
D: x/y

Answers

Step-by-step explanation:

x + y will have negative value as

x + y = -4 + (-8) = - 4 - 8 = - 12

Answer:

A

Step-by-step explanation:

They are both negative so you will keep the negative sign when you add.

what is the equation for this table ?

Answers

Answer:

y=-2x+5

Step-by-step explanation:

That is the equation ^

Answer:

y=-2x+5

Step-by-step explanation:

np :)

The total bill for breakfast was $81.30. The group of friends
wanted to leave a 15% gratuity. What was the total they
paid for diner?

Answers

Answer:

$93.50

Step-by-step explanation:

81.30 x 1.15 = 93.50

Please help, I need the answer quick, Thank you

Answers

Answer: true

Step-by-step explanation:

7/9 = 14/18
5/6 = 15/18
False, the male is 1 1/18 bigger

if 1 book cost $7, how much will 4 books cost?​

Answers

Answer:

28

Step-by-step explanation:

simple 4 times 7 equals 28 please mark brainlest

Answer:

$28

Step-by-step explanation:

PLEASE HELP 11 POINTS

Answers

Answer:

It say's 5 points babe so no

Step-by-step explanation:

Teehee 7373674+387894

Answer:

20

Step-by-step explanation:

it is going up by two so if you go to 12 and keep going up each dash you you will get 20 when you get to the blue dot

please help! Will mark! 20 points:)

Answers

Answer:

it the last question number 4 i think

Answer:

okay so the answer would be "C"

Step-by-step explanation:

......//...//../././//..//.././.?

Answers

Answer:.//./././/..

Step-by-step explanation:.././././..././..././//...../

In ΔUVW, u = 5.8 inches, ∠W=77° and ∠U=87°. Find the length of v, to the nearest 10th of an inch.

Answers

Answer:

1.6

Step-by-step explanation

You can use the angles given to figure out the degree of the angles given and then with that you set up your equation as v divided by Sin(16) is equal to 5.8 divided by sin(87) and cross multiply.

After you cross multiply you should get approximately 1.5987 is equal to v times sin(87)

you then fin out the approximation of sin(87) which should be around 0.9986 and divide both sides by 0.9986 so v is alone and your answer comes out to be v = 1.6

PLEASE GUYSSSSSSSSSSSSSSSSS

Answers

Answer: (hopefully I didn't make a mistake :D )

y=-3+21

Step-by-step explanation: (I can't sketch the graph for you)

First you need to find the slope of the line passing through the points (5,4) and (-7,0). This can be done using the point-slope form of a line.

Point 1: (-7,0)

Point 2: (5,4)

y2-y1=m(x2-x1)

m= (y2-y1)/(x2-x1) = (4-0)/(5-(-7)) = 4/12= 1/3

Now, when two lines are perpendicular, they are negative recopricols. So the slope of the line would be -3.

Since the equation of the line you are trying to find passes through the point (4,9), using point-slope formula again and solve for y.

y-9=-3(x-4)    

y= -3x+12+9

y=-3x+21

Phil received a prize of x dollars from a poker tournament. The tournament cost him $100 to enter. What were phil's net winnings from the tournament?

Answers

Answer:

x-100

Step-by-step explanation:

Phil is using the money he had won from the tournament to pay for the entry cost. So x-100

HELP ME PLEASE I AM STRESSED WITH THIS WORK PLEASE HELP!!!! BRAINLIST!! THANK YOU SO MUCH FOR WHOEVER HELP ME WITH THIS

Answers

Answer:

YesYesNoNoYesYesNoYesNoNoYesNoYesNoYesYesNoYesYesNo

Step-by-step explanation:

A function does not have any repeating domains (x-coordinates).

Hope it helps!

PLEASE QUICK ILL MARK BRAINLIST AND LOTS OF POINTS
15=1/3 x
x=?

Answers

45 is the answer
Hope it helps

Answer:

x = 45

Step-by-step explanation:

1/3x =15

x = 15×3

x = 45

If you know the radius, r, of a circle, what do you multiply rby to get the circle's CIRCUMFERENCE?

Answers

Answer:

C=2 x pi x radius

Step-by-step explanation:

X=3/2 and x=-5/4 what is x?

Answers

Answer:

x = 1.5

x = -1.25

Step-by-step explanation:

Henry made a scale model of a submarine. The submarine has an actual height of 75 feet. Henry’s model used a scale in which 1 inch represents 5 feet. What is the height in inches of Henry's model?

Answers

Answer: 180 Inchs

Reason:

75 / 5

180 Inchs = 15 Feet

-DoggyMan5

x=20 is the solution to 4=x-16

Answers

Answer:

True

Step-by-step explanation:

So let's put this question into one equation.

x - 16 = 4 if x = 20

Well, this is a true statement. If we were to replace x with 20. We would see that the equation makes sense.

20 - 16 = 4

20 minus 16 does indeed equal 4.

what is the reciprocal of 5 fourths

Answers

Answer:

4/5

Step-by-step explanation:

just flip it

4/5 I believe good luck :)

Them sum of two numbers is 17. One number is 3 less than 2/3 of the numbers. What is the lesser number?

Answers

Answer:

The smaller number is 5

Step-by-step explanation:

Let the smaller number be x

the other number is (17 -x) (we know they add up to 17)

2/3 of the bigger number is written as 2/3 (17 - x)

The smaller number is 3 less than that. (so subtract 3 to get x)

x= 2/3 (17 -x) - 3 <-- We have an equation, solve for x

Check 2/3 x 12 - 3 = 8 - 3 = 5

HELP I NEED HELP ASAP

Answers

Answer:

linear

Step-by-step explanation:

linear, that would be letter -

I need help with this

Answers

The correct answer is 15

Tim ,Kim and Jim collect comic books.Kim has 3 times as many comic book as .Jim Tim has 8 less that kim. Together they have 104 comic books. How many does each person have?

Answers

Kim has 48 comic books, Tim has 40 comic books, and Jim has 16 comic books

Help plz
will mark brainliest

Answers

Answer:

1/3

Step-by-step explanation:

Line C to B is 9 long while Line C' to B' is 3.

That's a 1/3 reduction

P(x)=x4-52+9x+8 Hallar p(-3)

Answers

Answer:

P(x)=x⁴+9x-44

Step-by-step explanation:

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