In ΔABC, what is the value of cos B? A) 5/13 B)12/13 C)5/12 D)13/12

Convert 5/6 hour to minutes 1 hour = 60 mins.

masya89 [10]

Answer:

50 minutes.

Step-by-step explanation:

We solve this question by proportions, using rule of three.

One hour is 60 minutes.

5/6 hour

This is:

$\frac{5}{6}*60 = \frac{5*60}{6} = 5*10 = 50$

50 minutes.

3 0

3 years ago

The volume of a gas with a pressure of 1.2 atm increases from 1.0 L to 4.0 L. What is the final pressure of the gas, assuming co

salantis [7]

Answer:

(b) 0.30 atm

Step-by-step explanation:

Given data

Initial pressure= 1.2atm

Initial volume= 1.0L

Final volume= 4.0L

Final pressure= ???

Let us apply the gas formula to find the Final pressure

P1V1= P2V2

Substitute

1.2*1= x*4

Divide both sides by 4

1.2/4= x

x= 0.3atm

Hence the final pressure is 0.3 atm

5 0

2 years ago

A bag contains 10 marbles: 2 are green, 4 are red, and 4 are blue. Carlos chooses a marble at random, and without putting it bac

Sveta_85 [38]

Step-by-step explanation:

The fraction is 4/10 * 2/9 = 4/45.

5 0

3 years ago

Read 2 more answers

Line t has an equation of y=10x-8. Line u is perpendicular to line t and passes through (-10,-6). What is the equation of line u

Pachacha [2.7K]

Answer: y= $-\frac{1}{10} x-7$

Step-by-step explanation: The slope of a perpendicular line is always negative and the reciprocal (opposite fraction) of the regular slope so the slope would be $-\frac{1}{10}$ . If the line passes through (-10,-6) then the y intercept would be (0,-7) because every time x goes 10 right y goes down 1 because of the slope.

4 0

1 year ago

A business buys invoice forms at a cost of $4.45 a box for the first 20 boxes, $4.00 a box for the next 25 boxes, and $3.75 a bo

Sergio039 [100]

So the first 20 boxes at 4.45 a piece will total 89.
The next 25 at 4 each will be 100.
Add those and you have 189 dollars, which is a spare of 45.
45/3.75 = 12 .
So the answer is 57

3 0

3 years ago