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3 years ago

Use properties to find the sum or product of 93+(68+7)

Mathematics

1 answer:

zaharov [31]3 years ago

7 0

93 + (68 + 7)
93 + 75
168

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Llana [10]

Answer:

V = 1436.76

Step-by-step explanation:

Formula:

V = 4/3πr³

Given:

r = 7

Work:

V = 4/3πr³

V = 4/3π(7³)

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Help with 10 and 11 please!

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3 years ago

25,00 people took part in a cross-country race The number of adults was 4 times the number of children there were 1,200 men.How

erastovalidia [21]

Answer:

Step-by-step explanation:

number of people= 2500

number of children =x

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3 years ago

Your paycheck each week is $500.00. If you want to save $2000 in one year, how much should you set aside from each paycheck?

Mnenie [13.5K]

There are 52 weeks in a year. In order to figure out how much you have to save each week to save a total of $2000, you have to divide $2000 by 52.

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2 years ago

Look at the triangle show on the right. The Pythagorean Theorem states that the sum of the squares of the legs of a right triang

Vladimir [108]

Answer:

$cos^2\theta + sin^2\theta = 1$

Step-by-step explanation:

Given

$(\frac{b}{r})^2 + (\frac{a}{r})^2$

Required

Use the expression to prove a trigonometry identity

The given expression is not complete until it is written as:

$(\frac{b}{r})^2 + (\frac{a}{r})^2 = (\frac{r}{r})^2$

Going by the Pythagoras theorem, we can assume the following.

a = Opposite
b = Adjacent
r = Hypothenuse

So, we have:

$Sin\theta = \frac{a}{r}$

$Cos\theta = \frac{b}{r}$

Having said that:

The expression can be further simplified as:

$(\frac{b}{r})^2 + (\frac{a}{r})^2 = 1$

Substitute values for sin and cos

$(\frac{b}{r})^2 + (\frac{a}{r})^2 = 1$ becomes

$cos^2\theta + sin^2\theta = 1$

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3 years ago