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3 years ago

Is this correct? If not, what is the right answer and how do I solve it?

Mathematics

2 answers:

arsen [322]3 years ago

7 0

5r + 8 < 63

Subtract 8 from both sides:

5r < 55

Divide both sides by 5:

R < 11

The answer is A

7nadin3 [17]3 years ago

4 0

Answer:

is A

r<11

Step-by-step explanation:

I HOPE THIS HELPS

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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

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

3 0

4 years ago

I need help someone ....

kvasek [131]

Answer:

162 ft^2

Step-by-step explanation:

18 * 18 = 324

324/2 = 162

The area of the patio is 162 square feet

7 0

3 years ago

Read 2 more answers

-10-(-8)+(-4)-20<br><br>please help

gtnhenbr [62]

-10 - (-8) + (-4) - 20

When subtracting a negative, you add the number.
When adding a negative, you subtract the number.

-10 + 8 - 4 - 20

Do addition and subtraction from left to right.
When adding a negative to a positive, keep the sign of the larger number.
When subtracting from a negative, you add the numbers together and keep the negative sign.

-10 + 8 - 4 - 20
-10 + 8 = -2
-2 - 4 = -6
-6 - 20 = -26

6 0

3 years ago

What is 180 squared show your work

Alchen [17]

Answer:

32,400

Step-by-step explanation:

180 * 180 + calculator = 32,400

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4 years ago

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Llana [10]

Answer:

First is x-10=y Second is x/4=y

Step-by-step explanation:

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3 years ago