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3 years ago

Can anyone help me with this

Mathematics

1 answer:

stepladder [879]3 years ago

8 0

Answer:

Step-by-step explanation

I'd say it's PQR and TSR cause they match up in terms of the order of vertexes, and then you've got the angles of P and T that are in the middle of PR and TR, which are equal, and the sides PQ and TS. The angles are in between the sides.

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Please help me on this problem !

sesenic [268]

Answer:

8.485

Step-by-step explanation:

This is a right isosceles triangle, thus the angles for side a and b are going to be the same, all the angles must all add up to equal 180, thus 180 - 90 = 90 then 90 ÷ 2 = 45 so we now know that angle a and b are 45°, with that said we can now find out what the vale of x is.
Calculates 2 sides based on 3 given angles and 1 side.

a = c·sin(A)/sin(C) = 8.48528 = 6 $\sqrt{2}$

b = c·sin(B)/sin(C) = 8.48528 = 6 $\sqrt{2}$

Area = $\frac{ab·sin(C)}{2}$ = 36

Perimeter p = a + b + c = 28.97056

Semiperimeter s = $\frac{a + b +c}{2}$ = 14.48528

Height ha = $\frac{2×Area}{a}$ = 8.48528

Height hb = $\frac{2×Area}{b}$ = 8.48528

Height hc = $\frac{2×Area}{c}$ = 6

Median ma = $\sqrt{(a/2)^{2} + c2 - ac·cos(B)}$ = 9.48683

Median mb = $\sqrt{(b/2)^{2} + a2 - ab·cos(C)}$ = 9.48683

Median mc = $\sqrt{(c/2)^{2} + b2 - bc·cos(A)}$ = 6

Inradius r = $\frac{Area}{s}$ = 2.48528

Circumradius R = $\frac{a}{2sin(A)}$ = 6

7 0

2 years ago

You have to answer 3 essay questions for an exam. There are 6 essays to choose from. How many different groups of 3 essays could

Paladinen [302]

Answer:

The answer is 120

Step-by-step explanation:

3 places. 6 options in the first place, 5 options in the second place, and then 4 in the last place. Because one option is used every time you pick one.

6x5x4=120

3 0

3 years ago

Find the total surface area of the cone in the figure. ( use rr=3.14.)

nikitadnepr [17]

Answer:

Answer D

Step-by-step explanation:

The formula is $A = pi r(r+\sqrt{h^2+r^2})$ . We have our r (radius) and h (height), so plugging it all in would give us A = (3.14)(5 + sqrt(12^2)+(5^2). After computing this, you would get answer D, 282.6.