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Ksenya-84 [330]
3 years ago
7

2 The students in Mr. Martinez's class counted by 6s. The first student said 6, the second student said 12, the third student sa

id 18, and so on.
How many students counted to get to 126? _______________

How do you know?
Mathematics
1 answer:
andrew-mc [135]3 years ago
3 0

Answer:

21

Step-by-step explanation:

I set it up as a table and found the equation. With increasing student counting it increases by six. So 6 times the number of students of counting gives you your output (y).

Input | Output                                                       Equation: 6x = y

1              6                                                            

2             12            

3             18                

4             24                    

5             30    

....             .....    

19             114

20            120

21             126

Hope this makes sense

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Samantha needs 4/5 yard of fabric to make costumes for the school play. Write and solve and equation to find how many costumes s
ArbitrLikvidat [17]

Answer:

Step-by-step explanation:

Samantha needs 4/5 yard of fabric to make costumes for the school play.

Let x represent the number of yards of fabric that she has

Let y represent the total number of costumes that she can make from x yards of fabric.

Since one costume require 4/5 yards of fabric, y costumes will require

x ÷ 4/5 = x×5/4 = 5x/4

The equation will be

y = 5x/4

to find how many costumes she can make with 8 yards of fabric, it becomes

y = (5×8)/4

y = 40/4 = 10

5 0
3 years ago
Which of the following is the equation of a line parallel to 3y=6x+5 that passes through (2,3)?
Verdich [7]

Answer:

The answer is C y= 2x-1

Step-by-step explanation:

7 0
3 years ago
Answer?......................
erica [24]

Answer:

22

Step-by-step explanation:

6( n^2 +2)

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

n

Let n = 3

6( 3^2 +2)

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

3

Parentheses first

6( 9 +2)

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

3

6( 11)

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

3

Top of the fraction next

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3

Divide

22

7 0
1 year ago
Help me for all these
ad-work [718]
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4.) 60-20=?  ?=40 children        5.) 50-15=?  ?=35 trees          6.) 14+4=?  ?=18 times


Don't know why you needed help with this but ok.
5 0
3 years ago
Y is directly proportional to square root of x<br> If y=56 when x=49 find,<br> y when x=81
STALIN [3.7K]

\qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad \stackrel{\textit{constant of variation}}{y=\stackrel{\downarrow }{k}x~\hfill } \\\\ \textit{\underline{x} varies directly with }\underline{z^5}\qquad \qquad \stackrel{\textit{constant of variation}}{x=\stackrel{\downarrow }{k}z^5~\hfill } \\\\[-0.35em] \rule{34em}{0.25pt}

\stackrel{\begin{array}{llll} \textit{"y" directly}\\ \textit{proportional to }\sqrt{x} \end{array}}{y = k\sqrt{x}}\qquad \textit{we know that} \begin{cases} y = 56\\ x = 49 \end{cases}\implies 56=k\sqrt{49} \\\\\\ 56=7k\implies \cfrac{56}{7}=k\implies 8=k~\hfill \boxed{y=8\sqrt{x}} \\\\\\ \textit{when x = 81, what is "y"?}\hfill y=8\sqrt{81}\implies y=8(9)\implies y=72

7 0
2 years ago
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