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3 years ago

549 vexhicals on 9 acres

Mathematics

1 answer:

ahrayia [7]3 years ago

4 0

Just mutpliy the two numbers

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Find each product. (20 Points!)

rodikova [14]

Answer:
13) 10b^2a^4
14) -5y^3+35y^2-10y

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3 years ago

A $20 shirt was 30% off and you had a coupon for another 10% off. What is the new price?

laila [671]

Answer:

$12.60 is the new price!

Step-by-step explanation:

20 x 0.7 = 14

14 x 0.9 = 12.6

Hope this helped!

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3 years ago

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Robin can bake 140 cupcakes in 5 hours.

Advocard [28]

Answer:

28.

Step-by-step explanation:

28 x 5 = 140

140 divided by 28 = 5.

5 hours.. 140 cupcakes. You divide the amount by the hours, showing you that 28 cupcakes per hour is the answer.

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3 years ago

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2.) AN *

WINSTONCH [101]

Answer:

is this a joke i have no clue

Step-by-step explanation:

maybe A is this math or sumthing? lol SUM-thing

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3 years ago

If x= sin theta then x/√1-x^2 is

SCORPION-xisa [38]

Well,

Given that $x=\sin(\theta)$ ,

We can rewrite the equation like,

$\dfrac{\sin(\theta)}{\sqrt{1-\sin(\theta)^2}}$

Now use, $\cos(\theta)^2+\sin(\theta)^2=1$ which implies that $1-\sin(\theta)^2=\cos(\theta)^2$

That means that,

$\dfrac{\sin(\theta)}{\sqrt{1-\sin(\theta)^2}}\Longleftrightarrow\dfrac{\sin(\theta)}{\sqrt{\cos(\theta)^2}}$

By def $\sqrt{x^2}=x$ therefore $\sqrt{\cos(\theta)^2}=\cos(\theta)$

So the fraction now looks like,

$\dfrac{\sin(\theta)}{\cos(\theta)}$

Which is equal to the identity,

$\boxed{\tan(\theta)}=\dfrac{\sin(\theta)}{\cos(\theta)}$

Hope this helps.

r3t40

6 0

3 years ago