Which expression is equivalent to 21d + 18

A) 21(d + 18)
B) 21( d + 6)
C) 3(7d + 6)
D) 3(7d + 18)​

Answer:

roses are red violets are blue I don't know the answer but ily

Step-by-step explanation:

[tex]( - 4 + 9) \times (1 - 8) \\ = 5 \times ( - 7) \\ = - 35[/tex]

hope it helps:)

Answer:

27 + 5[tex]\sqrt{2}[/tex] + ( -3[tex]\sqrt{10}[/tex] + 9[tex]\sqrt{5}[/tex] ) i

This 'i' is iota.

Hope this helps you. Do mark me brainlist

Answer:

3

Step-by-step explanation:

A term is a mathematical expression. Each of these is a term. Therefore, there are 3 terms.

Answer:

a) Given that w=81 and k = 0.375 then r = 6

b)  Given that s=27 and k = 224 then w=32

Step-by-step explanation:

Step(i):-

Given that W varies directly as r³

      ⇒ w∝r³

    ⇒   w = kr³

where 'k' is proportionally constant

given that w= 24 and r =4

     ⇒  24 = k (4)³

     ⇒ k = [tex]\frac{24}{64}[/tex]

    ⇒ k = 0.375

Step(ii):-

Given that W varies indirectly as 's'

            w ∝[tex]\frac{1}{s}[/tex]

            W =k [tex]\frac{1}{s}[/tex]

where 'k' is proportionally constant

          28 = k ([tex]\frac{1}{8}[/tex])

        k = 28 × 8 = 224

Step(iii):-

a) Given that w=81 and k = 0.375

     w = kr³

   81 = 0.375 (r)³

   r³ = 216

  r = ∛216 =6

 r =6

b)

 Given that s=27 and k = 224

          W =k [tex]\frac{1}{s}[/tex]

         w = 224 ([tex]\frac{1}{27}[/tex])

        w = 32

Answer:

3 x d = 45

Step-by-step explanation:

d = 15

Multiply 3 x d which d equals 15 and multiply 3 x 15 = 45. So d = 15

Answer:

45 = 3d

d = 15

Product means the numbers are being multiplied together

Since it is 3 and Diego's score (d) it would be 3d

Whatever is being multiplied to d would be 45

15 x 3 = 45

That would complete the equation

Answer:

m=1067

Step-by-step explanation:

19 +.05m = 72.35

72.35-19 = 53.35

53.35/.05= 1067

m=1067

Answer:

1:3

Step-by-step explanation:

70:210

7:21

1:3

69r + E is the answer

Answer:

Step-by-step explanation:

a+c=62, c=62-a

7a+3.5c=364, using c found above gives you

7a+3.5(62-a)=364 expand left side

7a+217-3.5a=364 group like terms on left side

3.5a+217=364 subtract 217 from both sides

3.5a=147 divide both sides by 3.5

a=42, since c=62-a

c=62-42=20

So 20 children and 42 adult tickets were sold.

Answer:

A is the answer

Step-by-step explanation:

Translating the word problem into a symbolic statement:  W = kr³/s.  Find k by letting W = 24, r = 4 and s = 8:

         k·4³

24 = --------            

           8

This reduces to 3 = 4^3*k, or 3 = 64k, or k = 3/64 (the constant of proportionality).

       3r^3

w = ---------

         64

Answer:

it is 48

Step-by-step explanation:

the reason it is 48 is because the length is 6 feet and it is 8 wide so 8x6=48

and it would be 480.00$

Answer:

it is 48!

Step-by-step explanation:

8x6 = 48

correct me if I'm wrong

Answer:

F = 59

Step-by-step explanation:

Answer:

200 + 400 + 200

This is because you always round up past 50 and down under 50 so.

182->200

439->400

217->200

Answer:

36 non repeating, 72 repeating (AB=BA)

Step-by-step explanation:

There is a theoretical approach to solving this question. We have formulae for such types of question in ‘Permutation and Combination’ chapter but let me solve it through my approach.

There are 9 members in the unit.

we have to choose only 2 people out of them randomly.

let the members be A, B, C, D, E, F, G, H an, I

A can be chosen first with one of the rest as the second person.

Like AB, AC, AD, AE … AI ………………………(1)

by this, we can choose people in 8 ways.

we will also have 8 ways as BA, CA, DA, … IA ………..(2)

the series (2) is completely reverse of series (1)

now perform the same action taking B as first-person and people after B as the second person.

by this, we will have 7 ways

and 7 ways again in reverse mode.

The same process with C, D, E and other members

we get

8*2 = 16 ways with A

7*2 = 14 ways with B

6*2 = 12 ways with C

5*2 = 10 ways with D

4*2 = 8 ways with E

3*2 = 6 ways with F

2*2 = 4 ways with G

1*2 = 2 ways with H

and I can not be selected lonely because there is no person after I.

SO total ways = 16 + 14 +12 + 10 + 8 + 6 + 4 + 2 = 72 ways

72 will be the answer if the selection of A first and B second is different from the selection of B first and A second.

If AB = BA then the answer will be 72/2 = 36

(It is my approach and easier way for me than the traditional formulae)

Answer:

y=2x-14

Step-by-step explanation:

y=mx+b(m is slope)

we know

y=2x+b

so if you plug in the values for the points you get

-6=4(2)+b

-6=8+b

b=-14

so then the complete equation would be

y=2x-14

Answer:

Step-by-step explanation:

A)

(22+12)/2 = [17]                 (12+17)/2 = [14.5]                 (17+14.5)/2 = [15.75]

B)

(10.5*2) - 5 = [16] ......... NOT 13

1. The  Complete Sequence is 2, 22, 12, 17, 14.5, 15.75.

2. The second term is 16.

A grouping of numbers in a specific order is known as a sequence. On the other hand, a series is described as the accumulation of a sequence's constituent parts.

Given:

1. 2  22  12   _  _  _

So, the rule is ( sum of consecutive terms) /2

Then, the fourth term is

= (22+12)/2

= 17

and, fifth term is

=(12+17)/2

= 14.5

and, sixth term is

= (17+14.5)/2

= 15.75

So, the Complete Sequence is 2, 22, 12, 17, 14.5, 15.75

2. First term =5 and 3rd term = 10.5

Again, third term = ( 5 + x ) /2

21 = 5 + x

x = 16

Learn more about Sequence here:

https://brainly.com/question/21961097

#SPJ2

Answer:

A) To make a decision on where to park depends on

B) Option 1 is most cost effective when the  parking time is ≥ 3hours

while Option 2 is most cost effective when the parking time is ≤ 30 minute

Step-by-step explanation:

A) To make a decision on where to park depends on

B)

lets assume you will be parked for 30 minutes before picking up your friend

For option 1

You will spend $5 and also get a free shuttle to the terminal

For option 2

You will spend $2  

Therefore Option 2 is better

Lets assume you will be parked for 3 hours  before pick up

For option 1

You will spend $5 and also get a free shuttle

For option 2

You will spend ; $2 for the first 30 minutes + $10 for the remaining 2hours 30 minutes

Therefore Option 1 is better.

Option 1 is most cost effective when the  parking time is ≥ 3hours

while Option 2 is most cost effective when the parking time is ≤ 30 minutes

Answer:

[tex]5x^{2} -3x+6[/tex]

Step-by-step explanation:

Answer:

It's a scalene triangle

Step-by-step explanation:

Answer:

Don't put it on the news because it's a high risk personnel?

Answer:

a = 9

Step-by-step explanation:

67 - a = 58

67 - 58 = 9

So a = 9

Answer:

67-58=9 it is an answer i think

Answer:

130

Step-by-step explanation:

[tex]2x \degree + 460 \degree = (6 - 2) \times 180 \degree \\ \\ 2x \degree + 460 \degree =4 \times 180 \degree \\ \\ 2x \degree + 460 \degree =720 \degree \\ \\ 2x \degree =720 \degree -460 \degree \\ \\ 2x \degree =260 \degree \\ \\ x \degree= \frac{260\degree}{2} \\ \\ x \degree= 130 \degree \\ \\ x = 130[/tex]

Answer:

2√3

Step-by-step explanation:

In a special right triangle called the 30-60-90 triangle, the ratios of the side lengths are x-x√3- 2x respectively. This means that the side opposite to the 60 degrees is x√3 and the side opposite to the 30 degrees is x.

Since the side opposite to the 60 degrees is 6, x√3=6

x√3=6

x=6/√3

rationalize the denominator:

6√3/3

simlify

2√3

so the answer is the third one. 2√3

Answer:

x = 12y + 1

y = Jenny's score

Answer:

4.1 horas 246 min

4.7 horas 282 min

4.8 horas 288 min

4.9 horas 294 min

5 horas 300 min

Step-by-step explanation:

Answer:

Surface Area of Triangular Prism=444 m

Surface Area of Square Pyramid= 146 cm

Step-by-step explanation:

Hope this helps.