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2 years ago

11

A teacher asks students to list the math lessons they learned on nine random school days in the past month. She evaluates the st

udents’ performance on this assignment to get a general picture of how well students are taking notes. This teacher’s method is an example of.

1 answer:

zysi [14]2 years ago

5 0

Answer:

Simple random sampling

Step-by-step explanation:

Hope this work :)

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There are 132 counters in a bag. The ratio of green counters to purple

DedPeter [7]

9514 1404 393

Answer:

77 purple counters

Step-by-step explanation:

There are a total of 5+7=12 ratio units, so each stands for 132/12 = 11 counters. The 7 ratio units representing the purple counters stand for ...

11 × 7 = 77 purple counters

4 0

2 years ago

What is the inverse of f(x)=2^x

GuDViN [60]

Answer:

<h2> ${f}^{ - 1} (x) = \frac{ln(x)}{ln(2)}$ </h2>

Step-by-step explanation:

$f(x)=2^x$

$y = {2}^{x}$

$x = {2}^{y}$

${2}^{y} = x$

$ln( {2}^{y} )=ln(x)$

$yln(2)=ln(x)$

<h3> $\frac{yln(2)}{ln(2)} = \frac{ln(x)}{ln(2)}$ </h3><h3> $y = \frac{ln(x)}{ln(2)}$ </h3><h3> ${f}^{ - 1} (x) = \frac{ln(x)}{ln(2)}$ </h3><h3>Hope it is helpful...</h3>

3 0

3 years ago

Which is the graph of g(x) = [X + 3]?

Vanyuwa [196]

Answer

D or the fourth one because i took the quiz and got it right

3 0

3 years ago

Solve for h in h+6/5=2

Ivenika [448]

Answer:

h=4/5

Step-by-step explanation:

$h + \frac{6}{5} = 2$

Collect like terms and simplify

$h = 2 - \frac{6}{5} \\ h = \frac{4}{5}$

6 0

3 years ago

Simplifying the following expression:<br> 6x + 2(3x + 5) + (-9)

Nezavi [6.7K]

= <span>6x + 2(3x + 5) + (-9)
= 6x +6x + 10 - 9
= 12x + 1

In short, Your Final Answer would be 12x + 1

Hope this helps!</span>

3 0

3 years ago

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