All categories

3 years ago

Help please. i dont understand this

Mathematics

1 answer:

-Dominant- [34]3 years ago

3 0

Answer:

x=12

Step-by-step explanation:

The whole angle is 90 degrees right, so if you add the two angles that make up the whole angle, you’ll get 90 degrees. So all you have to do is add the measures and set them equal to 90. That’ll give you a simple equation to solve.

X+42+3x = 90

4x = 90-42

4x = 48

x = 12

I hope this helps you understand, if you don’t, let me know and ill see if i can clear anything up. ;)

You might be interested in

(9+4c)+(2+3x) add timed so hurry!

Luba_88 [7]

Answer: 3x + 4c + 11

Step-by-step explanation: Combine like terms.

5 0

3 years ago

729 divided 10 to the 3rd power

grin007 [14]

Answer:

0.729

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Water is added to a cylindrical tank of radius 5 m and height of 10 m at a rate of 100 L/min. Find the rate of change of the wat

nirvana33 [79]

Answer:

$V = \pi r^2 h$

For this case we know that $r=5m$ represent the radius, $h = 10m$ the height and the rate given is:

$\frac{dV}{dt}= \frac{100 L}{min}$

$Q = 100 \frac{L}{min} *\frac{1m^3}{1000L}= 0.1 \frac{m^3}{min}$

And replacing we got:

$\frac{dh}{dt}=\frac{0.1 m^3/min}{\pi (5m)^2}= 0.0012732 \frac{m}{min}$

And that represent $0.127 \frac{cm}{min}$

Step-by-step explanation:

For a tank similar to a cylinder the volume is given by:

$V = \pi r^2 h$

For this case we know that $r=5m$ represent the radius, $h = 10m$ the height and the rate given is:

$\frac{dV}{dt}= \frac{100 L}{min}$

For this case we want to find the rate of change of the water level when h =6m so then we can derivate the formula for the volume and we got:

$\frac{dV}{dt}= \pi r^2 \frac{dh}{dt}$

And solving for $\frac{dh}{dt}$ we got:

$\frac{dh}{dt}= \frac{\frac{dV}{dt}}{\pi r^2}$

We need to convert the rate given into m^3/min and we got:

$Q = 100 \frac{L}{min} *\frac{1m^3}{1000L}= 0.1 \frac{m^3}{min}$

And replacing we got:

$\frac{dh}{dt}=\frac{0.1 m^3/min}{\pi (5m)^2}= 0.0012732 \frac{m}{min}$

And that represent $0.127 \frac{cm}{min}$

5 0

4 years ago

The contents of a cell in a spreadsheet are shown below. 4.7893541EE-6 What number does the contents of the cell represent?

matrenka [14]

Answer:

Step-by-step explanation:

6 0

4 years ago

PLEASE HELP ME ANSWER THIS QUESTION! QUICK POINTS!!!

Svetllana [295]

Step-by-step explanation:

2.5<x<8.0???????????

3 0

3 years ago

Read 2 more answers