What’s the answer please I need help.

Answer:

3) [tex]x^{2}[/tex] + 4x - 21

Step-by-step explanation:

(x - 3)(x + 7)

Distribute:

x(x + 7)

-3(x + 7)

x(x) = [tex]x^{2}[/tex]

x(7) = 7x

-3(x) = -3x

-3(7) = -21

Combine like terms:

7x - 3x = 4x

Put it together:

[tex]x^{2}[/tex] + 4x - 21

Answer: x²+ 4x - 21

Let's do this step-by-step.

1. Apply the foil method. (formula: (a + b)(c + d) = ac + ad + bc + bd)

F - First

O - Outer

I - Inner

L - Last

= xx + x × 7 + (-3)x + (-3) × 7

2. Apply the minus and plus rules. + (-a) = -a

xx + 7x - 3x - 3 × 7

3. Simplify.

Hence, the answer is x² + 4x - 21

Let me know if you have any questions.

~ Lily, from Brainly.

Answer:

the answer is 2.25

Step-by-step explanation:

you divide 6.75÷ 3

Answer:

$2.25

Step-by-step explanation:

$6.75÷3

=$2.25

hereeeeee

Answer:

13 ft

Step-by-step explanation:

Volume formula is = L x W x H

1144 = 11 x 8 x H

1144/88 = H

13 = H

Answer:

f(6) = 28

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

f(x) = 5x - 2

f(6) is x = 6

Step 2: Evaluate

=========================================================

Explanation:

Everywhere you see an x, replace it with 6

f(x) = 5x - 2

f(6) = 5*6 - 2

f(6) = 30 - 2

f(6) = 28

Remember that 5x is the same as 5*x or "5 times x". So that's why 5x turned into 5*6 after replacing x with 6. After every x is replaced, you follow the order of operations PEMDAS to simplify.

Answer:

Step-by-step explanation:

Let d=difference. V=xyz

d=17(8)5-564

d=680-564

d=116 ft^3

So the second classroom is 116 cubic feet larger than the first.

Answer: j-7

Step-by-step explanation:

So Jayson is J

Angelo is 7 years younger than him so j-7

Answer:

Steel

Step-by-step explanation:

It’s an obvious answer Bc it shows it on the number line

Answer:

it's steel

Step-by-step explanation:

Bc bro it's on the number line like the guy said above me and will you plz give me brainliest in need it bad so i can get to a new rank

Answer:

Step-by-step explanation:

The ancient Greek philosophers Plato and Aristotle may seem like the quintessential Dead White Males, but in fact they’re very much alive. Twenty four centuries ago they laid the foundations of Western culture, and their ideas and insights still dictate essential features of our world right now, from what we eat to what we see on the Internet

this is what I found and i know feed off of

Answer:

i only know a few

Step-by-step explanation:

5. 60

6. 80

4. 58

3. 38

Answer:

the answer is b because a squared plus b squared is c squared

Answer:

Hmm I got 9c+63

Step-by-step explanation:

Answer: 7c times 9

Step-by-step explanation: PEMDAS

9(3+c+4) (3+c+4)= 7c

9(7c) the parentheses means times so 9 times 7c but it in this order 9(7c) btw I’m in middle school and this is college? Easy hope I’m right.

Answer: number of girls = 21 & number of boys = 15

                     21 - 15 = 6 ( the difference is 6 )

Step-by-step explanation:

Answer:

add the ratios together. this gives 5+7 which is 12. divide 36 by 12, this gives 3. this tells us it's three students for every value of the ratio, so the ratio is 5(3):7(3). it becomes 15 boys to 21 girls. to find out how many more girls, we subtract 15 from 21. our answer is 6.

Answer:

15.8 in

Step-by-step explanation:

12cm  x .4 = 3 in

14 x .4 = 5.6

18 x .4 = 7.2

3 + 5.6 + 7.2 = 15.8 in

Hope that helps!

-Sabrina

Answer:

i think it would be B.The slope is approximately 1.33 and the y-intercept is 2.

it would be more clear if you put a graph :)

Answer:

[tex]After\ Tax = 7490[/tex]

Step-by-step explanation:

Given

[tex]Days = 2[/tex]

[tex]Rent = 3500[/tex] daily

[tex]Tax = 7\%[/tex]

Required

The total amount paid

For a day, he pays (without tax)

[tex]Rent = 3500[/tex]

For 2 days, he pays

[tex]Rent = 3500 * 2[/tex]

[tex]Rent = 7000[/tex]

After tax, his bills is:

[tex]After\ Tax = Rent + Rent * Tax[/tex]

[tex]After\ Tax = 7000 + 7000* 7\%[/tex]

[tex]After\ Tax = 7000 + 490[/tex]

[tex]After\ Tax = 7490[/tex]

Answer:

c

Step-by-step explanation:

Yes the two triangles are Similar by AA Similarity Criteria.

If the ratio of one triangle's two sides to another triangle's two sides is the same and both triangles' two sides inscribe the same angle, then

two triangles are said to be similar.

Given:

In ΔAOR and ΔEOD

<AOR = <DOE = 40 (verticals opposite angle)

Now, In ΔEOD

<DEO = 180 - (40+ 35)= 180- 75= 105

and, <ARO = <DEO = 105

So, by AA Similarity Criteria ΔAOR and ΔEOD are similar.

Learn more about Similarity here:

https://brainly.com/question/26451866

#SPJ2

Answer:

I think it's D

Step-by-step explanation:

I think it's D

Answer:

1. 12.9 - 5.07 = 7.83

2. It would weigh 2 1/6 ounces

3. A,C

4. 10 1/2 = 5 + 5 1/2

5. One-ninth as many as the sum of 2 and 5

Step-by-step explanation:

Hope this helps.

Answer:

??????idcccc

Step-by-step explanation:

Answer:

10[tex]x^{2}[/tex]  -20x -12.5 inches

Step-by-step explanation:

Triangle Area Equation:

Area of triangle = [tex]\frac{1}{2} * base * height[/tex]

base = 10x + 5

height = 2x - 5

1/2 (10x + 5) (2x - 5)

= 1/2 (20[tex]x^{2}[/tex] - 50x + 10x - 25)

= 1/2 ( (20[tex]x^{2}[/tex] - 40x - 25)

= 10[tex]x^{2}[/tex]  -20x -12.5 inches

Answer:

10x+3, or 2x+12, or [tex]x^{2}[/tex]+12x+27

Step-by-step explanation:

If the equation is x + 9x + 3, combine like terms you get 10x+3

If the equation is x+9 + x+3, combine x and numbers (like terms) and you get 2x+12

If the equation is (x+9)(x+3) or it is asking you to multiply, multiply x by x, and 9 by x, and 3 by x, and 9 by 3. Add them all up (like terms) and you get [tex]x^{2}[/tex]+12x+27.

Let me know which one you meant, and if its correct and have a great day! Please give brainliest if you can.

To find the median, you order the numbers from least to greatest, then find the middle number.

3,7,3,2,7,9

2,3,3,7,7,9

There are two middle numbers, so we have to find the middle of the two.

3,4,5,6,7

5 is the median, so the answer is B.

---

hope it helps

Answer:

B) 5

Step-by-step explanation:

To solve, first list the numbers in numerical order:

2, 3, 3, 7, 7, 9

Now find the middle number(s) of the set:

2, 3, 3, 7, 7, 9

It's between 3 and 7, so find the middle of these two numbers:

3, 4, 5, 6, 7

The final answer is 5!

Hope it helps!!!

Answer:

yes it is true

Step-by-step explanation:

Answer:  False

explanation:   :)

Step-by-step explanation:

2 3 2

----- ÷ ----- - -----

7 4 7.

8 2

----- - -------

21 7

8×1-2×3

------------------

21

8-6

-------

21

2

-----

21

I think it will be helpful for you

Answer:

2/21

Step-by-step explanation:

[tex]\frac{2}{7} : \frac{3}{4} - \frac{2}{7} = \frac{2}{7} * \frac{4}{3} - \frac{2}{7} = \frac{8}{21} - \frac{6}{21} = \frac{2}{21}[/tex]

Answer:

x = -5/4, x= -7

Step-by-step explanation:

Using the zero product property to solve this equation,

4x+5 = 0

4x = -5

4x/4 = -5/4

x = -5/4

x+7 = 0

x = -7

Answer:

d)  28 in²

Step-by-step explanation:

A = bh

A = 7h

Find 'h' by using the Pythagorean Theorem:

3² + h² = 5²

9 + h² = 25

h² = 16

h = √16 = 4

A = 7×4 = 28

Answer:28

Step-by-step explanation:

Area of a parallelogram= bh

base-7

height- 4

using the Pythagorean theorem, [tex]5^{2}[/tex] - [tex]3^{2}[/tex]= [tex]\sqrt{16}[/tex] = 4

7 * 4 = 28