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Pavlova-9 [17]
3 years ago
14

Maria solved the equation -5 n = -12. Her answer was n = 2. She is fairly confident about her answer, but wants to do a quick ch

eck of her solution using estimation. Which of the following shows a good check of her answer?
Mathematics
1 answer:
777dan777 [17]3 years ago
3 0
Plug in 2 to see if she is correct. Hope this helps!
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hodyreva [135]

Answer: g(f(x)) = g(x²-7)=x

Step-by-step explanation:

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You believe that eating an apple a day is healthy and want to design an experiment to find out. You have available 40 volunteers
Gwar [14]

The best design for this experiment would be a repeated measures design. This is ideal to determine if eating an apple makes you healthy.

<h3>What is an experimental design?</h3>

An experimental design refers to the general structure of an experiment including how people are distributed into the control and experimental group to test a specific phenomenon.

<h3>What is a repeated measures design?</h3>

In a repeated measures design all participants are both parts of the control group, in this case, people who do not eat apples, and the experimental group, or people who eat apples.

<h3>What does this design imply?</h3>

In the case of determining if eating an apple every day, this design implies:

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Learn more about experiments in: brainly.com/question/1452319

7 0
3 years ago
Sec (a) + tan (a) = sec (a) – tan (a)
Mariulka [41]

Answer:

a = π n for n element Z

Step-by-step explanation:

Solve for a:

sec(a) + tan(a) = sec(a) - tan(a)

Subtract sec(a) - tan(a) from both sides:

2 tan(a) = 0

Divide both sides by 2:

tan(a) = 0

Take the inverse tangent of both sides:

Answer:  a = π n for n element Z

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Pls I need help on this one
OlgaM077 [116]

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1.5 for half a batch and 1 and 0.16666666.. batch

Step-by-step explanation:

3 cups=1 batch so 3/2= 1.5 cups=1/2 batch

4 cups=1 and .1666 batches

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a

Step-by-step explanation:

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