3 years ago

I need help on this question

Mathematics

1 answer:

77julia77 [94]3 years ago

3 0

Answer:

The answer is B

Step-by-step explanation:

They both equal one 180 so add like terms and solve

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How many ways can you make a dollar with 3 quarters 6 dimes and 8 nickels?

melamori03 [73]

Answer:

Step-by-step explanation:

3 quarters + 2 dimes + 1 nickel = 1 dollar

6 dimes + 8 nickels = 1 dollar

7 nickels + 2 quarters + 1 dime = 1 dollar

I think that is all, I hope this helps!

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3 years ago

Read 2 more answers

Cot y, if csc y =-10/3 and cos y< 0

fredd [130]

$\csc y=-\dfrac{10}3\implies\sin y=-\dfrac3{10}$

$\cos^2y=1-\sin^2y\implies \cos y=\pm\sqrt{1-\dfrac9{100}}=\pm\dfrac{\sqrt{91}}{10}$

You're told that $\cos y$ , so omit the positive root.

$\cot y=\dfrac{\cos y}{\sin y}=\dfrac{-\frac{\sqrt{91}}{10}}{-\frac3{10}}=\dfrac{\sqrt{91}}3$

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3 years ago

Step 1 5x- y= 4

valkas [14]

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Two airplanes leave an airport at the same time, one going northwest (bearing 135°) at 421 mph and the other going east at 384 m

Papessa [141]

I am not sure if I am correct.
I think that the angles did not help to solve the problem, ( it makes an obtuse angle)
and the unit rate is 421 mph and 384 mph.

2*421+384*2= 1610 miles
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2 (421+384)= 1610 miles

Answer: 1610 miles

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3 years ago

I need help with number 13 please.

Tanzania [10]

1 and 3 they share a relationship of +2, 3 and 6 share x2, 5 and 8 share +3, 7 and 21 share x3

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3 years ago