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3 years ago

Nandini uses a code to open a security door.

Mathematics

1 answer:

11111nata11111 [884]3 years ago

5 0

Answer:

Step-by-step explanation:

getting brainlys

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In the triangle below, the sine of xº is 0.6. What is the sine of y

PilotLPTM [1.2K]

Answer:

The answer is " $\sin x=0.6$ "

Step-by-step explanation:

Please find the attached file of the graph.

Given:

$\to \sin x = 0.6\\\\\to x+y+90=180^{\circ} \\\\\to x+y=90^{\circ} \\\\\to y=90-x\\\\$

Let

$\to \cos y= \cos(90-x) =\sin x=0.6$

8 0

3 years ago

Which equation models the distance, d, traveled in t hours.<br> a. d=50t b. t=50d

Dafna1 [17]

A. It makes sense if you are looking for distance in hours

4 0

4 years ago

Water flows down the Mississippi River at about 1.2 miles per hour

Angelina_Jolie [31]

Answer:

Continuous

Step-by-step explanation:

The rate of flow of water down the river is referred to as its speed. Thus the speed changes with respect to the distance covered. Which implies that there is a direct relationship between the distance covered (in miles) by the water flow and time taken (in hours).

The relationship between hours and miles the water traveled is continuous.

6 0

3 years ago

each car on a commuter train can seat 114 passengers. if the train has 7 cars how many passengers can the train seat?

Sav [38]

144 x 7 = 1008

The train can hold 1008 people

6 0

3 years ago

Read 2 more answers

It takes 23 minutes for 6 people to paint 6 walls. How many minutes does it take 9 people to paint 7 walls?

bogdanovich [222]

For this problem you need to first find a unit rate (rate = 1/time), how fast per minute can 1 person paint a wall?

Once you have this rate you can find how many minutes it takes to do any number of walls with any number of people.

Lets call this unit rate 'r'. Number of people = n, Number of walls = w.
By multiplying the unit rate by 'n', you get the speed n people can paint a wall. Example, if it takes 4 min to paint 1 wall the unit rate = 1/4. The speed for 8 people is 8*(1/4) = 2 walls per minute. Time = 1/rate. So 2 walls per minute = 1/2 min per wall. Now multiply time by w. If there are 10 walls, (1/2)*10 = 5 , It takes 8 people 5 min to paint 10 walls.

The general formula is:
$t = \frac{w}{n*r} \\ \\ r = \frac{w}{n*t}$

Now apply to given problem:
Time = 23 min, n = 6, w = 6
Solve for unit rate 'r'
$r = \frac{6}{6*23} = \frac{1}{23}$
Find time, given
n = 9, w = 7
$t = \frac{7}{9*(1/23)} = \frac{7*23}{9} = 17.89$
Answer:
it takes 17.89 min or 17 min 53 sec

3 0

3 years ago