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3 years ago

Select the correct answers.

Mathematics

1 answer:

andrezito [222]3 years ago

4 0

Answer:

Step-by-step explanation:

If so, 4 centimeters would work, since it could make a 3-4-5 right triangle.

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4-4=3-3 true or false

svetoff [14.1K]

Answer:

True

Step-by-step explanation:

4-4=0

3-3=0

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3 years ago

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aleksklad [387]

Answer:

Step-by-step explanation:

The value of the 4 in 14.8 is 10 times the value of the 4 in 3.46.

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2 years ago

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What is the first step to Solving Word Problems?

asambeis [7]

The first step in solving any word problem is to read the problem carefully.

Steps would be as follows:
1- Read the problem carefully
2- Identify what you are trying to find
3- Make a plan
4- Solve the problem
5- Check that your answer makes sense

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3 years ago

I think of a number and multiply it by 4. I then add 8 and I'm left with an answer of 30. What number did I think of? Form and s

postnew [5]

Answer: number= 5.5; equation: 4x+8=30

Step-by-step explanation:

Take x for the unknown number. Then just follow the words and turn them into mathematical symbols. Easy.

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3 years ago

Prove this trigonometric equation;<br><br> - tan^2x + sec^2x = 1,

alekssr [168]

Hey there :)

- tan²x + sec²x = 1 or 1 + tan²x = sec²x

sin²x + cos²x = 1
Divide the whole by cos²x

$\frac{sin^2x}{cos^2x} + \frac{cos^2x}{cos^2x} = \frac{1}{cos^2x}$

$\frac{sinx}{cosx} = tanx$ so $\frac{sin^2x}{cos^2x} = tan^2x$
and
$\frac{1}{cosx} = secx$ so $\frac{1}{cos^2x} = sec^2x$

Therefore,
tan²x + 1 = sec²x
Take tan²x to the other side {You will have the same answer}

1 = - tan²x = sec²x or sec²x - tanx = 1

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3 years ago