Mathematics College

show your solution need an answer, please need an answer, please.​

Show Your Solution Need An Answer, Please Need An Answer, Please.

Answers

Answer 1

Answer:

As follows,

Step-by-step explanation:

You can solve these either by factoring or using the quadratic formula or other ways,

1. x^2+2x+1=0

Factoring,

(x+1)^2=0

x+1=0

x=-1

2.y^2-y-2=0

Using quadratic formula,

(-b±√(b^2-4ac))/2a

(--1±√(-1^2-4*1*-2))/2*1

(1±√(1+8))/2

(1±√(9))/2

(1±3)/2

y=(1±3)/2

y=(1+3)/2    y=(1-3)/2  

y=4/2          y=-2/2

y=2              y=-1

3.y^2+y+1=0

Using quadratic formula,

(-b±√(b^2-4ac))/2a

(-1±√(1^2-4*1*1))/2*1

(-1±√(1-4))/2

(-1±√(3))/2

No real roots

4. x^2+9x+18=0

Using quadratic formula,

(-9±√(9^2-4*1*18))/2*1

(-9±√(81-72))/2

(-9±√(9))/2

(-9±3)/2

x=(-9+3)/2  x= (-9-3)/2

x=-6/2         x=-12/2

x=-3           x=-6

5.x^2+5x+6=0

Using quadratic formula,

(-5±√(b^2-4ac))/2a

(-5±√(5^2-4*1*6))/2*1

(-5±√(25-24)/2

(-5±1)/2

x=(-5+1)/2  x=(-5-1)/2

x=-4/2       x=-6/2

x=-2         x=-3

6. 3n^2-13n-10=0

Using quadratic formula,

(-b±√(b^2-4ac))/2a

(-(-13)±√(-13^2-4*3*(-10)))/2*3

(13±√(169-(-120))/6

(13±√289)/6

The discriminant b^2−4ac>0

So there are 2 real roots.

x=(13±17)/6

x=30/6 or x=-4/6

x=5 or x=-2/3

Related Questions

Suppose the sum of two integers is negative. Must both be negative

Answers

No, because -5+3=-2 This is the same as 3-5=-2.

Answer: Not necessarily. There are many ways to write a basic equation with a negative answer. For example, -3-4 = -7.

Step-by-step explanation:

What is the greatest number of 2 digits?

Answers

Answer:

99 i think

Step-by-step explanation:

3 digit numbers start on 20 and end on 99

99 is the greatest two-digit number before the triple-digits.

The range of 2 digit numbers is 10-99; 10 being the start and 99 being the end, so 99 must be the greatest.

The solids are similar. Find the volume of solid B. Write your answer in terms of pi.​

Answers

Now, I’m not sure if I’m right because I’m not in college, but I’m pretty sure for solid A you divide the area which is 12 times the volume which is 4608. We do this because the volume of a cylinder is a•h but since we don’t know the height we divide. So after dividing I got 384. And since the solids are supposedly similar you will multiply the area of solid B which is 15 times 384 which equals 5,760. So the volume of solid B is 5,760 pi in.^3… (let’s hope this is correct)

Can somebody help me with social studies since nobody will?
Answer aSAp

Answers

Answer:

what is this

you are asking or telling dear

Answer:

I might be able to help you out.

Twix bars cost $1.29.each. If you buy 10 bars, how much
change will you receive from $20?

Answers

Answer:

$7.10

Step-by-step explanation:

1 bar = $1.29

10 bars = 10 x $1.29 = $12.90

Change received = $20 - $12.90 = $7.10

Answer:

7.1

Step-by-step explanation:

1 twix bar = $1.29

10 twix bar = $12.9

change = 20 - 12.9

= $7.1

Roger has $3.10 consisting of quarters, dimes and nickels. He has twice as many quarters as dimes and three more dimes and nickels. Find the number of each kind of coin.

Answers

Answer:

5 dimes 2 nickels 10 quarters

WHICH IS THE BETTER VALUE!
$15 for 4 pizzas
с
$25 for 6 pizzas
a
$19 for 5 pizzas

Answers

Answer:

unit price formula: cost / quantity

15 / 4 = 3.75 per pizza

25 / 6 = 4.16 per pizza

19 / 5 = 3.8 per pizza

lowest is $3.75so 15$ for 4 pizzas is your best value.

Estimate 25.65 + 13.23 + 6.35 by rounding each number to the nearest tenth.

a. 26 + 13 + 6 = 45

b. 25.7 + 13.2 + 6.4 = 45.3

c. 25.6 + 13.2 + 6.3 = 45.1

d. 25.7 + 13.3 + 6.4 = 45.4

Answers

Answer:

b. 25.7 + 13.2 + 6.4 = 45.3

Step-by-step explanation:

25.65 ≈ 25.7, 13.23 ≈ 13.2, 6.35 ≈ 6.4

25.65 + 13.23 + 6.35 =25.7 + 13.2 + 6.4 = 45.3

Correct choice is b.

what is the equivalent of 5y+9/8=y-1/4+4

Answers

Answer: the answer is 21/32 and it is equivalent to 0.65625.

Step-by-step explanation:

Use the drop-down menus to complete the statements below to compare the values of the two expressions. 2 attachments

Answers

The value of the expression in blue is 18 times the value of the expression in red

I know this because the sum of y and z is multiplied by 18

Answer:

The value of the expression in blue is 18 times the value of the expression in red

I know this because the sum of y and z is multiplied by 18

A retail store owner buys 300 cups from a manufacturer. The retail store owner pays a flat delivery fee of $50 in addition to $2 for each cup delivered. If a cup is scratched upon delivery, the manufacturer provides a refund of $1 per scratched cup. If the store owner pays the manufacturer $584 for the 300 cups, how many scratched cups are there?

Answers

Answer:

284 scratched cups

Step-by-step explanation:

it's in the picture

A large bag contains 7/12 pounds of nails. How many 1/8 pound bags can be filled with this amount of nails?

Answers

Answer: 4 bags

Division is nessacery

7/12 divide by 1/8= 4.6666667

Full bags will be 4

Step-by-step explanation:

Can someone please help me with a Mid topic assessment please?

Answers

Answer:

we can do it again and I am a great time with you and your family and friends and family is not good

Please help me somebody!

Answers

The answer is attached below

Evaluate.
8(19−6⋅2)
Enter your answer in the box.

Answers

Answer:

102.4

Step-by-step explanation:

Open the bracket

19-6.2=12.8

8(12.8)

8*12.8=102.4

in football, the team that has the ball has four chances to gain at least ten yards. if they don't gain at least ten yards, the other team gets the ball. positive numbers represent a gain and negative numbers represent loss. select all of the sequences of four plays that result in the team getting the ball. A. 8, -3, 4, 21. B. 30, -7, -8, -12 C. 2, 16, -5, -3.

Answers

Answer:

A) would keep ball and end with ball

B) would get first down but lose ball if yards aren't gained

C) would get first down but lose ball if yards aren't gained

Step-by-step explanation:

this question really doesn't make sense, most would end with a first down and have one more play to make up

Which expression does not have a solution of 9, if w = 4? 5 + w w + 5 13 - w 5 - w

Answers

Answer:

5 - w does not have a solution of nine.

Step-by-step explanation:

5 - 4 = 1

Check
Curtis deposits $550 into a savings account. The account pays 175%
simple interest on an annual basis. If he does not add or withdraw
money from the account, how much interest will he earn after
3 years?

Answers

Answer:

2,887.50

Step-by-step explanation:

First changing percent to decimal 175% - 1.75

I = 550 × 1.75 × 3 = 2,887.50

If it is 175% the answer is $2,887.50. If it is 1.75% simple interest, Curtis will earn $9.63

PLZ HELP
which relation is a function?​

Answers

Answer:

The Bottom one

Step-by-step explanation:

The Line cant pass thru it twice. I think, if not sorry.

Rose :)

Unless there is a fourth option, which there probably is and if there is then the 4th option is correct.
All three graphs in the picture above are NOT functions because they do not pass the vertical line test :)

Heres some more math, i'm terrible at these

Answers

Answer:

3rd Option

Step-by-step explanation:

2.7 × 10⁵ > 2.4 × 10⁴ > 3.1 × 10³

Simplify The Expression

[tex]y^{17}[/tex] · [tex]y^{11}[/tex]

Answers

Hi there!  

»»————-　★　————-««

I believe your answer is:  

[tex]y^{28}[/tex]

»»————-　★　————-««  

Here’s why:  

⸻⸻⸻⸻

[tex]y^{17} * y^{11}\\\rule{150}{0.5}\\\text{Note the exponent rule: } a^x + a^y = a^{x + y}\\\rule{150}{0.5}\\y^{17} * y^{11} = y^{17 + 11} = \boxed{y^{28}}[/tex]

⸻⸻⸻⸻

»»————-　★　————-««  

Hope this helps you. I apologize if it’s incorrect.  

the entrance to the hotel

Answers

Answer:

Hotel Mario

Step-by-step explanation:

Walmart sells 6 gel pens for $15.00 and 4 notebooks for $5.40. What is the
difference between the unit price of a gel pen and the unit price of a notebook?
Enter the answer in the box.
$

Answers

Answer:

$1.15

Step-by-step explanation:

$15 / 6 =$2.50 for each gel pen

$5.40 / 4= $1.35 for each note book

$2.50- $1.35= $1.15

which equation can be used to represent this problem? company spent $2000 developing a waterproof fabric. The company makes $3 on the sale of each yard of fabric after subtracting anufacturing costs. How many yards of fabric, x, will they need to sell to have a profit of $12,000?

A 2000 - 3x = 12000
B 12000 - 3x =2000
C 3x - 2000 = 12000
D 3x - 12000 = 2000​

Answers

The answer for this is A.

Determine whether the ordered pair (6,5) is a solution to the equation -2x +y = -7.
O Yes, (6,5) is a solution.
O No.(6,5) is not a solution.

Answers

Answer:

yes (6,5) is a solution

Step-by-step explanation:

-13 + 7 - 11 -4y as a sum

Answers

Answer:

-17-4y

Step-by-step explanation:

You just have to add the numbers:

-13+7-11=-17

=17-4y

The sum of the terms -13 + 7 and  - 11 -4y is -4y - 17.

What is the sum?

A summation, also known as a sum, is the outcome of adding two or more numbers or quantities. There are always an even number of terms in a summation. There could be only two terms, or there could be one hundred, a thousand, or a million.

Given:

-13 + 7 and  - 11 -4y

Calculate the sum of the expression as shown below,

(-13 + 7) + (-11 - 4y)

-13 + 7 - 11 - 4y  [In sum, the sign convention will be (+) + (-) = (-)]

Arrange the term as shown below,

-4y + 7 - 13 - 11

Apply the operation as shown below,

-4y + 7 - 24

-4y - 17

Thus, the sum will be -4y - 17.

To know more about sum:

https://brainly.com/question/958140

#SPJ2

9x - 5 = 7x + 3 Please help and explain step by step I really don’t understand I’ll mark brainliest

Answers

Answer:

x=4

Step-by-step explanation:

Equation:   9x-5=7x+3

Add 5 on both sides: 9x=7x+8

Subtract 7x from both sides: 2x=8

Divide 2 from both sides: x=4

Answer:

4

Step-by-step explanation:

9x - 5 = 7x + 3

2x = 8

x=4

just a little algebra.

Please help!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

45∘

Step-by-step explanation:

So, the reference angle is 360∘−315∘=45∘

Hope this helps! :D

:D im
Pretty sure lol

Wich is the missing number in the prime factorization will rate branleist

Answers

The answer is a. 5. Good luck

helppppppppp??? Pls !!!

Answers

Answer:

a. 19

Step-by-step explanation:

5/6x-1/5x=19

5/6(30)-1/5(30)=19

25-6=19

19=19

?/30(30)=19

19/30(30)=19

19=19

I'm not sure if this is exactly what you're looking for, but 19=19 if you plug in 19 for the box (and x=30 because of the first section, I'm guessing)

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