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umka2103 [35]
3 years ago
9

Sarah examined 7 random lessons from each textbook for her class. Each textbook has an equal number of lessons. Is this sample o

f the lessons in the class's textbooks likely to be representative?
This is a yes or no question also
Mathematics
1 answer:
yaroslaw [1]3 years ago
3 0

yes the classes textbooks is likely to be representative

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How many times does 30 go into 100
shtirl [24]

Answer:  "How many times does 30 go into 100?" is the same as asking "How much is 100 divided by 30?" Thus, the answer can be calculated as follows:

100/30 = 3.33

Step-by-step explanation: HOPE THIS HELP

3 0
3 years ago
HELP!!!!!!!!!!!!!! I learned this two years ago and I don't remember how to do this anymore!!!!!!
Otrada [13]

So remember the acronym "SOH CAH TOA"

  • Sin = Opposite/Hypotenuse
  • Cos = Adjacent/Hypotenuse
  • Tan = Opposite/Adjacent
  • Opposite = Side that doesn't touch the angle
  • Adjacent = Side that touches the angle
  • Hypotenuse = Side that is across from the right angle
<h3>A.</h3>

So we see that side a doesn't touch angle \alpha , hence making it the opposite side. And we see that side b is across from the right angle, making it the hypotenuse. <u>Using this info, \sin \alpha = \frac{a}{b}</u>

<h3>B.</h3>

So we already know from part A that side b is the hypotenuse. And also since side c touches the angle, it is the adjacent.<u> Using this info, \cos \alpha = \frac{c}{b}</u>

<h3>C.</h3>

Next, it has been established that side c is the adjacent and side a is the opposite side. <u>Using this info, \tan \alpha = \frac{a}{c}</u>

4 0
3 years ago
Justin bought some yarn from his favorite craft store. He can make one scarf with 3/5 of a ball of yarn. If he purchases 15 ball
Elena L [17]

He can make 25 scarves from 15 balls of yarn.

Step-by-step explanation:

Given,

Yarn used for one scarf = \frac{3}{5} of a ball

Yarn purchased = 15 balls

Let,

x be the number of scarves.

Yarn used for one scarf*number of scarves = Yarn purchased

\frac{3}{5}x=15

Multiplying both sides by \frac{5}{3}

\frac{5}{3}*\frac{3}{5}x=15*\frac{5}{3}\\x=\frac{75}{3}\\x=25

He can make 25 scarves from 15 balls of yarn.

Keywords: fraction, multiplication

Learn more about fractions at:

  • brainly.com/question/12801884
  • brainly.com/question/12817595

#LearnwithBrainly

8 0
3 years ago
Find the slope perpendicular to the given points
mihalych1998 [28]

Answer:

perpendicular slope = \frac{7}{3}

Step-by-step explanation:

Calculate the slope m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (6, - 6) and (x₂, y₂ ) = (- 1, - 3)

m = \frac{-3+6}{-1-6} = \frac{3}{-7} = - \frac{3}{7}

Given slope m then the slope of a perpendicular line is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{-\frac{3}{7} } = \frac{7}{3}

3 0
3 years ago
Read 2 more answers
6 – 3(2x – 4) = 2(1 + x)
ratelena [41]
     6 - 3(2x - 4) = 2(1 + x)
6 - 3(2x) + 3(4) = 2(1) + 2(x)
     6 - 6x + 12 = 2 + 2x
     6 + 12 - 6x = 2 + 2x
           18 - 6x = 2 + 2x
            <u>   + 6x       + 6x</u>
                  18 = 2 + 8x
                 <u>- 2  - 2         </u>
                  <u>16</u> = <u>8x</u>
                   8      8
                    2 = x
The answer is D.
3 0
3 years ago
Read 2 more answers
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