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3 years ago

How to write 5lbs more than 3 times the weight

Mathematics

1 answer:

boyakko [2]3 years ago

5 0

Let w = the weight

3w+5

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Christina has 2 2/3 bags of chips. She gives 2/5 of the to friend. How many bags does christina have left?

oksano4ka [1.4K]

Answer:

1 3/5 bags left

Step-by-step explanation:

If she gives 2/5 away, she keeps 3/5

3/5 * 2 2/3 = 3/5 * 8/3 = 24/15 = 1 9/15 = 1 3/5 bags left

3 0

2 years ago

If tan theta = 10/13 and cos theta > 0 then sin2theta is what ?

svetoff [14.1K]

$sin2\alpha = \frac{260}{269}$

<u>Step-by-step explanation:</u>

We have , $Tan\alpha = \frac{Perpendicular}{Base} = \frac{10}{13}$ ,

We know that $sin\alpha = \frac{Perpendicular}{Hypotenuse} = \frac{Perpendicular}{\sqrt[2]{(Perpendicualr)^{2} + (Base)^{2})} }$

Substituting values of P & B , $sin\alpha = \frac{10}{\sqrt{10^{2} + 13^{2}} } = \frac{10}{\sqrt{269} }$

Now , $sin2\alpha = 2sin\alpha cos\alpha = 2sin\alpha \sqrt{1 - (sin\alpha)^{2} }$

⇒ $sin2\alpha =$ $\frac{10}{\sqrt{269} }$ × $\sqrt{1 - (\frac{10}{\sqrt{269} })^{2} }$ ×2

⇒ $sin2\alpha = \frac{20}{\sqrt{269} }( \sqrt{\frac{269 - 100}{269} } )$

⇒ $sin2\alpha = \frac{20}{\sqrt{269} }( \sqrt{\frac{169 }{269} } )$

⇒ $sin2\alpha = \frac{260}{\sqrt{269} }( \sqrt{\frac{1}{269} } )$

⇒ $sin2\alpha = \frac{260}{269}$

6 0

3 years ago

Simplify an expression for the PERIMETER of the equilateral triangle shown below.

djyliett [7]

The answer is 180 if right

6 0

3 years ago

−3x−6+(−1) equivalent

OLga [1]

Answer:

-3x-7

Step-by-step explanation:

Combine Like Terms:

=−3x+−6+−1

=(−3x)+(−6+−1)

=−3x+−7

6 0

3 years ago

Can someone please help me ..I can’t get anymore questions wrong or else I will fail I need help

dedylja [7]

Answer:

maybe number 2

Step-by-step explanation:

because if 2+k=18 then there is no other k there and where did the additional 2 come from ?and 2k=18 then value of k is 9 + there is balance.I may be wrong correct me but i think it is no.2

5 0

3 years ago

Read 2 more answers