x2-16= -2x - 1

Please help

X2-16= -2x - 1Please Help

Answers

Answer 1

Answer:

The solutions are -5 and 3.

Step-by-step explanation:

[tex]x^2 - 16 = -2x-1[/tex]

[tex]x^2 - 16 +2x+1=0[/tex]

[tex]x^2 +2x-15=0[/tex]

Factoring the quadratic expression:

[tex](x+5)(x-3)= x^2 +2x-15=0[/tex]

So,

[tex]x+5 = 0 \implies x =-5[/tex]

[tex]x-3 = 0 \implies x =3[/tex]


Related Questions

8(4y - 3) + 2(y - 5)​

Answers

Answer:

34y-34

Step-by-step explanation:

Expand:

32y-24+2y-10

=34y-34

Answer:

34y-34  or  34(y-1) whichever is better for you specifically

Step-by-step explanation:

distribute so 32y-24+2y-10 then simplify like terms so 34y-34 or 34(y-1)

27 : 18 = 13 : x find x​

Answers

Answer:  27:18 and 13:x can also be written as 27/18 and 13/x

therefore, 27:18 = 13:x

                 27/18 = 13/x

                 27/18 *13= x

               x = 19.5

Hope it helped u,

pls mark as the brainliest

and put thanks

^_^

distribute -4(5x ²-2x).

Answers

Answer:

-4(5x^2-2x)

-4 x 5x^2-4(-2x)

-20x^2+8x

Answer:

-20x^2+8x

Step-by-step explanation:

That is -20x squared by the way

You’re welcome :)

PLEASE HELP DUE TODAY TOOOO!!!!

Answers

Answer:

f(4) is 6,520 greater than g(4)

Step-by-step explanation:

Someone please answer its due by midnight

Answers

Answer:

Look below :)

Step-by-step explanation:

1. coefficient

2. constant (it's referred to as a constant because the value never changes)

3. This polynomial has 4 terms. We know this by counting them. 5x^3 is one term, -x^2 is the second term, 5x is the third term, and -8 is the fourth term.

4. In descending order: 2, 1, 3, 4. The degree is the same value as the exponent. For the last term, x^2y^2, you add the values of the exponents together to get the degree.

5. -2 is the coefficient. The term with the third degree, or has 3 as the exponent, is -2x^3.

6. 1 is the coefficient. The term with the second degree is x^2. When the coefficient is 1, usually the 1 isn't written because any number multiplied by 1 equals that number (x * 1 = x)

7. 5 is the degree of the polynomial. To find the degree of a polynomial, find whichever term has the highest value for an exponent. In this case, 5 is the highest exponent.

8. 2 is the degree of this polynomial. Although none of the terms may look like they have a degree of 2, in order to find the actual degree of 4xy you have to add the values of the degree of x and y to find the actual degree. If x and y both have a degree of 1, you add those together to make 2.

9. 2[tex]x^{3}[/tex] - 7[tex]x^{2}[/tex] + 5x - 15. To order a polynomial from highest to lowest you have to order the terms in decreasing value of their exponents.

10. -4[tex]x^{3} y[/tex] + 2xy + 5x + 7.

I hope this helps :)

What is the first step to evaluate 33 + 46 – 14?

Answers

Answer:

You would add 33 and 46 together to get 79.

Then you would do 79-14 and get 65 as the total answer

Step-by-step explanation:

Answer:

Addition

Step-by-step explanation:

You use Order of Operations or PEMDAS (parenthesis, exponents, multiplication, division (left to right), addition, subtraction (left to right)).

witch is grater 18/24 or 55%

Answers

Answer:

i would say 18/24

Step-by-step explanation:

(y - 6) = -4(x + 3) in slope intercept form

Answers

Answer:

y=-4x-6

Step-by-step explanation:

use the formula y=mx+b

oh btw i just posted a question so please maybe help with it???

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[tex]y - 6 = - 4(x + 3)[/tex]

[tex]y - 6 = - 4x - 12[/tex]

Add sides 6

[tex]y - 6 + 6 = - 4x - 12 + 6[/tex]

[tex]y = - 4x - 6[/tex]

This is the slope-intercept form.

Done...

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WILL GIVE BRAINILEST
(−7x^2+3)-(−4x−3)

Answers

Answer:

−7x^2+4x+6

Step-by-step explanation:

HOPE THIS HELPS!!!!

Answer: =−7x2+4x+6

Step-by-step explanation: distribute the Negative Sign:

=−7x2+3+−1(−4x−3)

=−7x2+3+−1(−4x)+(−1)(−3)

=−7x2+3+4x+3

Combine Like Terms:

=−7x2+3+4x+3

=(−7x2)+(4x)+(3+3)

=−7x2+4x+6

Answer:

=−7x2+4x+6

A museum requires a minimum number of chaperones proportional to the number of students on a field trip. The museum requires a minimum of 3 33 chaperones for a field trip with 24 2424 students.

Answers

Answer:

Step-by-step explanation:

3 chaperones for every 24 students or 3:24

so that would be 1 chaperone for every 8 students

Round each of these numbers to the degree of accuracy shown in the brackets
a) 4865
(Nearest ten)​

Answers

Answer:

irst, 4865 rounded to the nearest ten is:

4870

Step-by-step explanation:

Here we will tell you what 4865 is rounded to the nearest ten and also show you what rules we used to get to the answer.

Remember, we did not necessarily round up or down, but to the ten that is nearest to 4865.

When rounding to the nearest ten, like we did with 4865 above, we use the following rules:

A) We round the number up to the nearest ten if the last digit in the number is 5, 6, 7, 8, or 9.

B) We round the number down to the nearest ten if the last digit in the number is 1, 2, 3, or 4.

C) If the last digit is 0, then we do not have to do any rounding, because it is already to the ten.

Heather needs to buy some pencils . Brand A has a pack of 24 pencils for $4.48 . Brand B has a pack of 36 pencils for $6.24

Answers

I’m assuming the question is which one is better deal
Brand A: 4.48/24 = $0.19 per pencil
Brand B: 6.24/36 = $0.17 per pencil
Brand B has a better deal
B is the answer... price per unit is a better deal

Ms. Hogan paid $13.25 for 5 tacos and 1 soda. The price of a taco is $2.50. What is the price of the soda?

Answers

Answer: $0.75

Step-by-step explanation:

To solve this problem, we can create 2 equations. Let's use x for tacos and y for soda.

Equation 1: 5x+y=13.25

Equation 2: x=2.5

Since we know the value of x, we can plug it into Equation 1 to solve for y.

5(2.5)+y=13.25        [multiply]

12.5+y=13.25           [subtract both sides by 12.5]

y=0.75

Now, we know the price of the soda is $0.75.

Answer:

The soda costs $0.75.

Step-by-step explanation:

We are given that Ms. Hogan paid $13.25 for 5 tacos and one soda. We are also given that one taco costs $2.50. Therefore, we can set up a system of equations to solve for how much a soda costs.

[tex]\displaystyle\left \{ {{5x + y = \$13.25} \atop {x = 2.50}} \right.[/tex]

This is our required system of equations. We are given that one taco costs $2.50, so this is our x. Therefore, the price of one soda is y.

We can use the second equation and substitute it in place of the x in the first equation to solve for the price of the soda.

[tex]\displaystyle5x+y=\$13.25\\\\5(2.50)+y=\$13.25\\\\12.5 + y = \$13.25\\\\y = \$0.75[/tex]

Therefore, one soda costs $0.75.

Is 1.6 or 1.25 bigger

Answers

1.6 is bigger because
1.6 is bigger. Think of 1.6 as 1.60. Is 1.60 or 1.25 bigger? 1.60 is. Hope this helps!!!

May someone please help me with this problem:

Answers

Answer:

Surface Area : Volume

22:5

Step-by-step explanation:

Surface area = 22

Volume = 5

HOPE THIS HELPS

PLZZ MARK BRAINLIEST

solve the equation

pls help me

Answers

I think it’s zero 0

In how many ways could 10 people be seated at a rectangular table if the two hosts should not sit
together? Show work.

Answers

Answer:

ok

Step-by-step explanation:

Answer:

9 ways.

Step-by-step explanation:

find the mean median range and standard deviation 45,48,42,44,35,58,32,60,21,71,59,36,62,8​

Answers

Answer:

Mean: 4.307

Median: 44

Range: 63

Step-by-step explanation:

i think its correct

I WILL MARK BRAINIEST
please answer the question it shows what I got wrong so don’t choose that one

Answers

Answer:

e. the triangles are congruent

Step-by-step explanation:

Similar means they're alike but are not the same, congruent means they're the same. The triangles are the same so therefore they're congruent.

Also it's congruent because u see the triangles on the bottom and top line? It means that the lines are parallel. So the lines at the side have to be the same length and tilt in an equal way so the top and bottom lines can be parallel

Mrs. Coughlin bought 2.25 pounds of turkey at $4.96 per pound and 0.75 pound of provolone cheese at $5.20 per pound. If Mrs. Coughlin gave the cashier $20, how much change will she receive?

Answers

Answer:

$4.94

Step-by-step explanation:

To find out the change from $20, we need to find her total cost.

Total cost = 2.25lbs * $4.96/lb + 0.75lbs * $5.20/lb

Total cost = $11.16 + $3.90 = $15.06

Now $20 - total cost = $20 - $15.06 = $4.94

∠A and \angle B∠B are vertical angles. If m\angle A=(3x+26)^{\circ}∠A=(3x+26) ∘ and m\angle B=(x+20)^{\circ}∠B=(x+20) ∘ , then find the value of x.

Answers

Answer:

The value of x is -3

Step-by-step explanation:

The vertical angles are equal in measures

∵ ∠A and ∠B are vertical angles

→ By using the rule above

m∠A = m∠B

∵ m∠A = (3x + 26)°

∵ m∠B = (x + 20)°

→ Equate their measures

3x + 26 = x + 20

→ Subtract x from both sides

∵ 3x - x + 26 = x - x + 20

∴ 2x + 26 = 20

→ Subtract 26 from both sides

∵ 2x + 26 - 26 = 20 - 26

∴ 2x = -6

→ Divide both sides by 2

∵ [tex]\frac{2x}{2}[/tex] = [tex]\frac{-6}{2}[/tex]

x = -3

The value of x is -3

YOU GET BRAINLIEST IF CORRECT!!!!!

Answers

It's really easy to solve this problem all you have to do is long division with 4,274 and 51.

4,274 divided by 51 is = to 83 but it still has decimals leftovers meaning there would be a remainder and since we already found out 81 is part of the answer we know it won't be 91 and it has to be 83 with a remainder!

It’s 83 that’s the answer

Someone plz help me

Answers

The answer is 14 7/12

(2x+y,x+3y)=(12,11)​

Answers

Answer:

x=5, y=2

Step-by-step explanation:

Use the information given:

2x+y=12x+3y=11

Subtract them because we have two variables and two equations:

        2x+y=12

    -   x+3y=11

    –––––––––

         x-2y=1

We can by 1+2y (Add 2y to both sides) instead of x:

2(1+2y)+y=122+4y+y=122+5y=125y=10y=2(1+2y)+3y=111+2y+3y=111+5y=115y=10y=2

Now we can figure out x as we know y:

2x+1(2)=122x+2=122x=10x=5x+3(2)=11x+6=11x=5

ivan scores 56 out of 80 marks in a maths test
what is his score as a percentage

Answers

Answer:

70%

Step-by-step explanation:

(56/80) * 100

0.7 * 100

70%

What expression represents the decimal 72.603

Answers

Answer: 7 x 10 + 2 x 1 + 6 x 1/10+ 3 x 1/1000

Step-by-step explanation: just had this question on the test

i need a good grade please

Answers

Answer:

A is not correct

Step-by-step explanation:

angle GHK is a vertical angle but Jhi is not

B. Solve the problem:

Mrs. Reyna is planning to fence her vacant lot for a parking space. The desired length of the lot is 6 m longer than its width. What will be the possible dimensions of the rectangular parking space if it should be less than 40m2?
(Hint: length x width = Area of rectangle)

Answers

Answer:

Step-by-step explanation:

Given

Area of the rectangle =Length × width

Given

The desired length of the lot is 6 m longer than its width, then L = 6+W

A = LW

40 = (6+W)W

40= 6W+W²

W²+6W -40 = 0

W²+10W-4W-40 = 0

W(w+10)-4(w+10) = 0

W+10 = 0 and w-4 = 4

W = -10 and w = 4

Width can't be negative

W = 4m

Since L = 6+w

L = 6+4

L = 10m

Hence the possible dimension s 4m by 10m

PLZ PLZ PLZ help will give brainliest!

Answers

Answer:kenny didnt find the real factor next to y and x and he swerved past the axis

Step-by-step explanation:

IK this is simple math but I need help.

Answers

Answer:

C

Step-by-step explanation:

[tex]60*2 = 120[/tex]

[tex]60*3=180[/tex]

[tex]60*4=240[/tex]

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