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4 years ago

Find the missing value.

2 answers:

6 0

To calculate the speed of the 70 teeth countershaft drive gear, evaluate the surface teeth per minute (STM) of each gear. STM = Speed x number of teeth, which is equivalent for both gears. Thus, 45 teeth * 450 r.p.m. = 70 teeth * 'x' r.p.m. is the governing equation. Rearranging the equation to calculate 'x' as the 70 teeth gear's speed, the answer is 289.3 r.p.m.

Lilit [14]4 years ago

3 0

Answer:

225 r.p.m

Step-by-step explanation:

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Penn draws a triangle with one 90 degree angle. What could be the measures of the other two angles in penn’s triangle?

stellarik [79]

Answer:

both 45 degrees

Step-by-step explanation:

90 + 45 + 45 = 180 degrees

Hope this helps!

4 0

3 years ago

Read 2 more answers

Chloe was given a box of assorted chocolates for her birthday. Each night, Chloe treated herself to some chocolates. There were

djverab [1.8K]

Answer:

3 chocolates each night

Step-by-step explanation:

C-3

t-1

8 0

3 years ago

The population of a town is 81,712 and declines continuously at a rate of 4.1% each year. What is the approximate population of

Ganezh [65]

Data:

P (Final population) = ?
Po (Initial population) = 81712
r (rate) = 4,1% = 0,041
t (time in years) = 17

$P = Po - (Po*r*t)$
$P = 81712 -(81712*0,014*17)$
$P = 81712 - 56953.264$
$P =24758.736$
$\boxed{P \approx 24759}$

Answer:
B) 24759

4 0

4 years ago

A boat's crew rowed 33kilometers downstream, with the current, in 3hours. The return trip upstream, against the current, co

algol [13]

Answer:

The crew rowing rate in still water = 7km/hr

The rate of the current = 4km/hr

Step-by-step explanation:

The distance rowed downstream with the current = 33km

Time taken to row downstream = 3hrs

The distance rowed upstream against the current = 33km

Time taken to row upstream = 11hrs

Let the crew's rowing rate in still water = Xkm/hr

Let the rate of current = Ykm/hr

For the downstream movement, we will have (X+Y). This is because the boat rowed with the current

For the upstream movement, we will have (X-Y). This is because the boat rowed against the current

Downstream Speed = distance /time

= 33/3

= 11km

Upstream speed = distance /time

= 33/11

= 3km

Hence X+Y = 11 and X-Y= 3

Add both equations. We have

X+Y+X-Y = 11 + 3

2X = 14

X= 14/2

X= 7

put X= 7 in any of the equations

7-Y= 3

Y= 7-3

Y= 4

Hence the crew rowing rate in still water = 7km/hr and the rate of the current = 4km/hr

6 0

3 years ago

Answer and question are shown in picture

Rasek [7]

The answer is A and B

its hard to use the radical sign typing here
but if you need it i can update my answer

3 0

3 years ago