Solve by completing the square. x2^+8x= -20

Answer:

The error made by the student was that they didn't distribute the 7 first, they just added -2 and 7. The correct way would be to distribute first:

-2+7(x+8)

-2+7x+56

54+7x

*Hey! Hope this helped : )*

Answer:

7x + 54

Step-by-step explanation:

Given

- 2 + 7(x + 8)

The student made the error of adding before multiplying, that is

- 2 + 7 = 5 , then multiplying (x + 8) by 5

However, multiplication is performed before addition/ subtraction, thus

- 2 + 7(x + 8) ← distribute by 7

= - 2 + 7x + 56 ← collect like terms

= 7x + 54

Answer:

1

Step-by-step explanation:

The degree of the polynomial is 4. Then the number of zeroes of the polynomial is 4. Then the correct option is E.

Let a, b, c, and d are the zeroes of the polynomial.

Then the polynomial is given as,

⇒ (x - a)(x - b)(x - c)(x - d)

The degree of the polynomial will be greater than or equal to the number of zeroes.

Let p(x) be a polynomial with 4, (x - 1), (3 - x), and (x² - 2) as four of its factors. Then the polynomial is given as,

p(x) = 4(x - 1)(3 - x)(x² - 2)

The degree of the polynomial is 4. Then the number of zeroes of the polynomial is 4. Then the correct option is E.

More about the polynomial link is given below.

https://brainly.com/question/11536910

#SPJ2

Answer:

one solution with a y value of 5

Step-by-step explanation:

/| x+y-4 = 0| x-y-6 = 0

We try to solve the equation: x+y-4 = 0

x+y-4 = 0 // - x-4

y = -(x-4)

y = 4-x

We insert the solution into one of the initial equations of our system of equations

We get a system of equations:

/| x+x-6-4 = 0| y = 4-x

2*x-10 = 0 // + 10

2*x = 10 // : 2

x = 10/2

x = 5

We insert the solution into one of the initial equations of our system of equations

For y = 4-x:  

y = 4-5

y = -1

We get a system of equations:

/| y = -1| x = 5

Answer:

a=3.777777777777

b=13.5

c=17

d=22.33333333

Step-by-step explanation:

Given:

Atul has [tex]\dfrac{2}{3}[/tex] lb of candy.

Jose has [tex]\dfrac{3}{5}[/tex] lb of candy.

Maria has [tex]\dfrac{1}{2}[/tex] lb less than Jose.

To find:

How many more pounds of candy does Atul have than Maria?

Solution:

Since, Maria has [tex]\dfrac{1}{2}[/tex] lb less than Jose, therefore

Maria has = [tex]\dfrac{3}{5}-\dfrac{1}{2}[/tex] lb

Maria has = [tex]\dfrac{6-5}{10}[/tex] lb

Maria has = [tex]\dfrac{1}{10}[/tex] lb

Difference between the candies Atul and Maria have.

Difference = [tex]\dfrac{2}{3}-\dfrac{1}{10}[/tex] lb

Difference = [tex]\dfrac{20-3}{30}[/tex] lb

Difference = [tex]\dfrac{17}{30}[/tex] lb

Therefore,  Atul have [tex]\dfrac{17}{30}[/tex] lb of candy more than Maria.

Answer:

p(4) = 10

Step-by-step explanation:

So we are given that:

p(x) = 3(2x - 5) + 1

To find p(4) we would have to plug in 4 for every x in the equation.

p(4) = 3(2(4) - 5) + 1 = 3(8 - 5) + 1 = 3(3) + 1 = 9 + 1 = 10

So p(4) = 10

I hope you find my answer and explanation to be helpful. Happy studying. :)

Answer:

7.5 x 10^2

~theLocoCoco

Answer:

7.5 x 10²

There really isn't much of an explanation other than writing it in scientific notation.

Answer:

$43.91

Step-by-step explanation:

=34.99 + 3(1.89)

=40.66

[tex] = 40.66 \times \frac{108}{100} [/tex]

= 43.91

or

[tex]40.66 \times \frac{8}{100} [/tex]

= 3.25

then 40.66 + 3.25 = 43.91

Answer:

The answer is D

Step-by-step explanation:

34.99 = 1 backpack

1.89(3) = 5.67

34.99 + 5.67 = 40.66

40.66(.08) = 3.2528

40.66 + 3.25 = 43.91

Hopefully this helps you :)

pls mark brainlest ;)

Answer:

[tex]x=6[/tex]

Step-by-step explanation:

[tex]2+7x=5x+14[/tex]

Subtract 2 from both sides:

[tex]2+7x-2=5x+14-2[/tex]

[tex]7x=5x+12[/tex]

Subtract 5x from both sides:

[tex]7x-5x=5x+12-5x[/tex]

[tex]2x=12[/tex]

Divide both sides by 2:

[tex]\frac{2x}{2}=\frac{12}{2}[/tex]

[tex]x=6[/tex]

Answer:

x=6

Step-by-step explanation:

2+7x=5x+14

2+2x=14

2x=12

12/2 =6

Answer:

-125

Step-by-step explanation:

it was correct on 2021 edge

The value of the given exponent expression (-5)⁻³ is -0.008.

The exponent of a number represents the total time required to multiply that number. 8 8 8 may be stated as 83 since 8 is multiplied by itself three times. In this case, 3 is the 'exponent' or 'power' that indicates how many times 8 is multiplied by itself, and 8 is the 'base' that represents the integer being multiplied.

The exponent is given as:

(-5)⁻³

To find the value of (-5)⁻³, we need to raise -5 to the power of -3, which is equivalent to finding the reciprocal of (-5)⁻³.

(-5)⁻³ = (-5) × (-5) × (-5) = -125

The reciprocal of -125 is -1/125, so the value of (-5)⁻³ is -1/125 = -0.008.

Since -5 is negative, the value of (-5)⁻³ will also be negative, so the answer is -0.008.

Learn more about the exponent here:

brainly.com/question/5497425

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Answer:

D.5

Step-by-step explanation:

5 because in order for the line to be parallel the slope needs to be the same

Answer:

<

Step-by-step explanation:

√7 ≈ 2.66

14/5 = 2.8

2.66 < 2.8

√7 < 14/5

Best of Luck!

Answer:

-4/5

Step-by-step explanation:

r=x/2

a=2x

ar²=-1/16

x^3=-1/8

x=-1/2

sn=a/1-r

=-4/5

Answer:

Ella, Miles, Sam, Laney

Step-by-step explanation:

that should be the answer hope I could help

Answer:

Last year: 49 students

Step-by-step explanation:

There were 23 more students this year than last year. This means that 72 is equivalent to x, or a random number, plus 23

If 23 + x =72

Then x = 72 - 23

Which means that x = 49, or that the number of students that completed projects for the science fair is 49.

Hope this helps!!!

Answer:

Hey there!

Step 1:

[tex]6p = - 42[/tex]

Write the equation

Step 2:

[tex]p = \frac{ - 42}{6} [/tex]

take 6 to other side to divide it with-42

[tex]p = - 7[/tex]

after dividing 6 with -42 we will get -7

[tex]\small{\purple {\sf \underline{hope\: it\: helped\: you✿}}}[/tex]

6p = -42

The value of p.

6p = -42

or, p = -42/6

or, p = -7

The value of p is -7.

Answer:

16 fluid ounces

Step-by-step explanation:

Answer:

it is 2

Step-by-step explanation:

Answer: 1+$11=$12

$12 +$51= $75 tickets that Henry bought

Answer:

n=4

Step-by-step explanation:

$11 - $51 = $40

$40 ÷ $10 =4

n=4

their was 4 kids and 1 adult

Answer:

-3 or 6 I would put -3 but... its your wish

Step-by-step explanation:

Answer:

-3

Step-by-step explanation:

3x + 12 - 2x = 9

Subtract 3x - 2x

x + 12 = 9

subtract 12 to both sides

x = -3

Hope this helps, can you please mark me brainliest? I just need 2 more brainlest to become expert.

Answer:

Rotation then translation

Step-by-step explanation:

C on Edg2020

Answer:

c

Step-by-step explanation:

Answer

f(n)=4•(0.5)^n-1

The sentence translates to 6x < 12

Divide both sides by 6 to get x < 2

Answer:

6X<12

Step-by-step explanation:

Product means multiply so 6 times X. Is less than means you use the < less than sign. So it becomes 6X<12

Answer:

6 grapes.

Step-by-step explanation:

If she already had 9 grapes, subtract 15 and 9 to get 6.

Answer:

6 grapes

Step-by-step explanation:

take 15 subtract 9 to get 6

Answer:

x=13 and y=45

Step-by-step explanation:

You can measure it with area, though I might be incorrect. I wish you good luck and hope you don't get grounded.

Answer:

they weight 6000 gram .............

Answer:

= -55-10-10

= -65-10

= -75

Hi!

Your answer will be: C., "1|3"

hope this helps!