Mathematics High School

what is n in the equation 2(2n + 3)

Answers

Answer 1
Solve Using the Quadratic Formula n^2-2n-3=0
n
2
−
2
n
−
3
=
0
n
2
-
2
n
-
3
=
0
Answer 2

Answer:

n=-1.5 or  -3/2

Step-by-step explanation:

4n+6

4n=-6

n=-1.5 or  -3/2

Related Questions

The radius of a circle is 8 miles. What is the circle's circumference?

Answers

Answer:

50.27 mi

Step-by-step explanation:

lol

What is the average speed of someone who walks 3 kilometers in 1 hour?

A. 3 m/h B. 0.33 km/h C. 3 km/h D. 0.33 km/h2​

Answers

Answer: C. 3 km/h
Reasoning: This is a ratio, where the person walks 3 kilometers (km) per 1 hour (h)

-3(x-4) = -9(x - 1)
X=?

Answers

Answer:

x = - 1/2

Step-by-step explanation:

-3(x-4) = -9(x - 1)

1. Distributive Property

-3 * x -3 *-4 = -9 * x -9 * -1

-3x + 12 = -9x + 9

Hint: 2 negatives make a postive

-3x + 12 = -9x + 9

2. Subtract 12 on both sides

-3x + 12 - 12 = -9x + 9 - 12

-3x = -9x + -3

3. Add 9x on both sides

-3x + 9x = -9x + 9x + -3

6x = -3

4. Divide both sides by 6 to isolate the variable

6x/6 = -3/6

x = - 1/2

Check:

-3(-1/2-4) = -9( -1/2- 1)

3/2 + 12 = 9/2 + 9

3/2 + 12 ( we need a common denominator so...lets make it  2 )

3/2 + 12*2/1*2

3/2 + 24/2 = 27/2 = 13 1/2 = 13. 5

Now...

9/2 + 9 ( we need a common denominator so..lets make it 2 )

9/2 + 9*2/1*2

9/2 + 18/2 = 27/2 = 13 1/2 = 13.5

13.5 = 13.5 CORRECT!

27/2 = improper fraction

13 1/2 = mixed number

13.5= decimal form

Hope this helped

If you can answer 10, 11, and 12 for me that would be awesome. (12 multiply choice would be in the comments)

Answers

10: 3
11: 2
and can’t see 12

Find the value of x. Round to the nearest tenth if necessary.

Answers

Answer:

x

Step-by-step explanation:

Which letter is in the solution set for graph #3

Answers

Answer:

N

Step-by-step explanation:

Since it says y is greater then 1 it would be above the red line.

Then for the next equation, it says that y is less than the equation so it is under the blue line.

Answer: The solution is (4,1)

Step-by-step explanation:

You can tell if it is a solution by looking at the point where the two lines intersect(meet). This is why the solution is (4,1).

Of the 90 gallons of water the average uses each day, 30% is used outdoors mason wants to know how much water is used outdoors?

Answers

Answer:

Step-by-step explanation:

J

Answer:

90*0.3= 27 gallons of water are used outdoors each day

-7-1.2x+19+7.7x help

Answers

Answer:

12+6.5x

Step-by-step explanation:

Hope this helps!! if you in step by step ill comment it in the comments!!

5x2 +19x +12 can someone please help me with this question

Answers

Answer:

(5x+4)(x+3)

Step-by-step explanation:

hope this helps :)

Answer:

5x2+19x+12

=(5x+4)(x+3)

A fish tank is 3 feet by 4 feet by 5 feet. How many cubic feet of water will it hold?

Answers

Answer:

60ft3

Step-by-step explanation:

Volume = length * breadth * height

= 3 * 4 * 5 = 60 (cubic ft)

Jeremiah plans on building a garden walkway 5 meters long with stones that measure 5/6 meter on each side. There will be no spaces in between. How many stones are needed?

Answers

Answer: 6

Step-by-step explanation:

From the question, we are informed that Jeremiah plans on building a garden walkway 5 meters long with stones that measure 5/6 meter on each side.

The number of stones that are need would be gotten by dividing 5 by 5/6. This would be:

= 5 ÷ 5/6

= 5 × 6/5

= 30/5

= 6

Therefore, the answer is 6.

What is the greatest common divisor between 621 and 1035.

Answers

Answer:

207

Step-by-step explanation:

What is the value of 5^2+0.8^2

Answers

Answer:

5^2=25 and 0.8^2= 0.64

Step-by-step explanation:

soo 25+0.64 equals..... 25.64!!!

It’s 25.64 hope this helps!

Measurement of <1 please help

Answers

Answer:

27°

Step-by-step explanation:

Triangles when all three sides are added up make up 180°. So In this problem you would need to add up 80 and 73 (153) then subtracting that number by 180 (27) to find the value/measurement of <1.

QUICK HELP ME PLEASEEEEEEE. ONLY ONE HOUR LEFT! WILL MARK BRAIN...

Answers

Answer:

copy and paste it to math website

Step-by-step explanation:

Just need number 3 please will mark as brainliest

Answers

Answer:

Step-by-step explanation:

the other angle is 38 as well

A board game uses a bag of 105 lettered tiles. You randomly choose a tile and return it to the bag. The table shows the number of vowels and the number of consonants after 50 draws. Predict the number of vowels in the bag.

This is what the table says:

Vowels Consonants
18 32

Answers

Answer:

38

Step-by-step explanation:

thats the answer

I really need help for this geometry question, I would appreciate any help thank you.

Answers

75 degrees would be the correct answer

how do you find the volume of a cylinder describe which measurements of the cylinder you need to know

Answers

Answer:

To calculate the volume of a cylinder, you need to know its height and the area of its base. Because a cylinder is a flat-top figure (a solid with two congruent, parallel bases), the base can be either the top or bottom

Step-by-step explanation:

Answer:

Give other person brainlyest :D

Step-by-step explanation:

PLEASE HELP I NEED THIS ASAP!!!What is the measure of an inscribed angle on a diameter? Move options into the blanks to identify and justify the measure B.

Answers

Answer: 180

Step-by-step explanation:

I'll give u brainliest if right ​

Answers

Answer:i think its a or c

Step-by-step explanation:

What’s the solution for x- 6 = 4

Answers

Answer:

X = 10

Step-by-step explanation:

X - 6 = 4

X = 4 + 6

X = 10

Answer:10

Step-by-step explanation:

1.add 6 to both sides

x-6+6=4+6

2. simplify

x=10

Two differences between y=2x and y=2x-7

Answers

Answer:

y=2x and y=2x-7 has same slope 2, but y=2x-7 shift down 7 unit from y=2x

Step-by-step explanation:

y=2x and y=2x-7 has same slope 2, but y=2x-7 shift down 7 unit from y=2x

4 - y over 5 = 2 - 2y over 8
I’m just really tired lol (and lazy)

Answers

Answer:

40 if i did the equation right and ignore this wiehdnsjw

Answer:

egg egg egg egg egg

Step-by-step explanation:

1+1=1972-1=egg

Rewrite in simplest terms 3 (w-9w+8)-10

Answers

Answer:

-24w + 14

General Formulas and Concepts:

Pre-Algebra

Distributive Property

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Algebra I

Terms/Coefficients/Degrees

Step-by-step explanation:

Step 1: Define

3(w - 9w + 8) - 10

Step 2: Simplify

Combine like terms:                    3(-8w + 8) - 10Distribute 3:                                  -24w + 24 - 10Combine like terms:                    -24w + 14

1. An initial population of 10 cats triples every year. How many cats will there be in 5 years? Make a table and
graph your results.

Answers

Answer:

150

Step-by-step explanation:

file is graph

Will mark brainliest
There are 16 cats and 14 dogs in a local animal shelter.

Which phrase describes a ratio relationship between the two quantities?



A. the number of dogs in the shelter compared to the number of cats in the shelter


B. the number of cats in the shelter compared to the number of cats in the shelter

C. the number of cats in the shelter compared to the number of dogs in the neighborhood


D. the number of dogs in the shelter compared to the number of rabbits in the shelter

Answers

Answer: A

Step-by-step explanation:

PLEASE HELP ME I NEED HELP THIS IS DUE BY TODAY AND IF I DONT GET IT DONE MY MOM WILL KILL ME

Answers

Answer: it's just a black screan

Step-by-step explanation:

Answer:

5.8

Step-by-step explanation:

5+8(3+x)=

5+24+5x

29+5x=

5x= Negative 29

divide 29 by 5


x + 3y = 18
-X - 4y = -25

Answers

-y=-7
Y=7
-x-4(-7)=-25
-x+28=-25
-x=3
X=-3

Answer:

x = -3

y= 7

Step-by-step explanation:

x + 3y=18 ----(1)

-x - 4y=-25 -----(2)

from equation (1)

x = 18 - 3y ---(3)

putting equation (3) into equation (2)

-(18 - 3y) - 4y = -25

18 + 3y -4y = -25

3y - 4y = -25 - 18

-y = -7

y = 7 ✓

Putting y=7 into equation (1)

x + 3(7) = 18

x + 21 = 18

x = 18 - 21

x = -3 ✓

The basic ratio of blue to red for paint is 4:7. How many quarts of blue paint should be mixed with 21 quarts of red paint to get purple?

Answers

If I’m not mistaken it should be 12 quarts of blue mixed with 21 red
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