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3 years ago

In the image, pretty sure 24 is a plane. Not sure about 23.

Mathematics

1 answer:

Anestetic [448]3 years ago

4 0

9514 1404 393

Answer:

23. A (postulate)

24. A (line)

Step-by-step explanation:

23. A postulate is assumed true without proof. A theorem must be proven before it can be used as a reason in a proof. Postulates, theorems, and definitions can all be used as reasons in a proof.

24. Two planes intersect in a line. An example is attached.

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Someone PLEASE help me with these 2 questions??<br> thank you!

Alexxandr [17]

Answer:

40. D. 5x-14

Step-by-step explanation:

7 0

3 years ago

A 12-meter ladder leans against a building forming a 30° angle with the building.

KatRina [158]

Answer:

will show you two (2) ways to solve this problem.

A diagram is needed to see what is going on....

Without loss of generality (WLOG)

The wall is on the right. The ladder leans against the wall

with a POSITIVE slope, from SW to NE (quadrant 3 to quadrant 1).

The measure from the bottom of the ladder to the wall is 6.

Option 1:

The ladder, ground and wall form a right triangle.

The hypotenuse (ladder) is 14 feet.

The bottom of the ladder is 6 feet from the wall,

so the base of this right triangle is 6 feet.

The top of the ladder to the ground represents

the missing leg of the right triangle.

The pythagorean theorem applies, which says

6^2 + h^2 = 14^2 where h is the height

of the top of the ladder to the ground

36 + h^2 = 196

h^2 = 196 - 36

h^2 = 160

h = sqrt(160)

= sqrt(16 * 10)

= sqrt(16)* sqrt(10)

= 4*sqrt(10) <--- exact answer

= 4 * 3.16227766016838....

= 12.64911....

12.65 <--- rounded to 2 digits as directed

----------------------------------------------

Option #2: using trig

With respect to the angle formed by the bottom of the

ladder with the ground

cos T = 6/14 = 3/7

T = inverse-cosine(3/7) = 64.623006647 degrees

sin(64.623006647) = h/14

h = 14*sin(64.62300647) = 12.6491106 <--- same answer

hope this helps

Step-by-step explanation:

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2 years ago

An amusement park manager determined that about 23 of all customers would wait in long lines to ride the new roller coaster. Whi

laiz [17]

Answer:

Top Left in I.M.

Step-by-step explanation:

Trust me

4 0

3 years ago

Read 2 more answers

In a shipment of new cookies for a store, 4/12 of the cookies were sugar and 1/5 were oatmeal. The remainder of the cookies were

Lisa [10]

Answer:

13/15

Step-by-step explanation:

The fraction of the cookies that are chocolate chip can be determined by solving this equation

1 - ( $\frac{4}{12}$ - $\frac{1}{5}$ )

1 - $\frac{20 - 12}{60}$

1 - $\frac{8}{60}$

$\frac{60}{60}$ - $\frac{8}{60}$ = $\frac{52}{60}$ = 13/15

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2 years ago

The ratio of the angles in a triangle is 7:10:3 what is the measure of the smallest angle?

Sonbull [250]

The correct answer should be 3.

4 0

3 years ago