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solmaris [256]
3 years ago
10

Help plzzz Thx thx thx

Mathematics
2 answers:
Step2247 [10]3 years ago
7 0
Under 10 the number is 21 because 21+9=30 and the other side is 9
Semenov [28]3 years ago
3 0
9m * 10m + 9m * 30 m

= 9m * ( 10m + 30m)

= 9m * 40m

= 9m * 4 * 10m

= 36m * 10m

= 360 m²

--------

Area:

360 metres²
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Solve 2 cos theta + 2 = 3 in the interval from 0 to 2pi. Round to the nearest hundredth.
TiliK225 [7]
2cos theta = 1 -> cos theta = 1/2

Then theta = pi/3 + 2npi or -pi/3 + 2npi, where n is random interger

And the domain is restricted in [0,2pi]

So answer will be pi/3 or 5pi/3
4 0
3 years ago
the angle between two lines is 60 degree. if the slope of one of them is 1. find the slope of other line​
Degger [83]

Answer:

-3.73

Step-by-step explanation:

solution:

Given:

Angle between two lines=60⁰

slope of first line=1

Or, tanA=1

Or, A= tan inverse (1)

so, A=45⁰

so, angle of inclination of first line=45⁰

Now,

angle of inclination of second line= A+ 60⁰

= 45⁰+60⁰

=105⁰

so, slope of second line = tan105.

= -3.73

8 0
3 years ago
Please I need help with some geometry. An image with the question is attached.
Vladimir [108]

Answer:

Not enough information

Step-by-step explanation:

You gave the height, but there is no length. You need both the height and length because the area of a triangle is 1/2bh

4 0
3 years ago
A cone with a diameter of 12 inches has a volume of 640.88 cubic inches. find the height of the cone
BlackZzzverrR [31]

Answer:

The height of the cone is 17\ in

Step-by-step explanation:

we know that

The volume of a cone is equal to

V=\frac{1}{3}\pi r^{2}h

In this problem we have

r=12/2=6\ in ----> the radius is half the diameter

V=640.88\ in^{3}

assume \pi=3.14

substitute the values and solve for h

640.88=\frac{1}{3}(3.14)(6)^{2}h

h=640.88*3/((3.14)(36))=17\ in

8 0
3 years ago
Paula a college student earned $3,600 one summer during the following semester she spent $2500 for tuition $650 for rent and $43
Fed [463]
The fraction you are looking for is expenses/earnings 

So (2500+650+434)/3600
=224/225 

If you want to turn this into a percentage just multiply by 100, to give you 99.56%.
3 0
3 years ago
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