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3 years ago

In right triangle ABC, ∠C is a right angle and sin A = sin B. Solve for m∠A.

2 answers:

4 0

A triangle's angles all add up to 180 degrees. Since it's stated in the answer that angle C is a right angle, which is 90 degrees, and the other two angles are equal, the other two must be 45 degrees.
The answer is B.

malfutka [58]3 years ago

3 0

The best and most correct answer among the choices provided by your question is the second choice or letter A. The measures of both angles would be 45 degrees.

If A = B = 45 degrees
Therefore, sin (45) = sin (45) = sqrt(2)/2
I hope my answer has come to your help. Thank you for posting your question here in Brainly.

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The diameter of a circular tablecloth is 72 inches. Find the area and circumference. Use 3.14 as an approximation for pi.

nalin [4]

Answer:

Part 1) The area is $A=4,069.44\ in^{2}$

Part 2) The circumference is $C=226.08\ in$

Step-by-step explanation:

step 1

Find the area

we know that

The area of a circle (circular tablecloth) is equal to

$A=\pi r^{2}$

we have

$r=72/2=36\ in$ ------> the radius is half the diameter

$\pi =3.14$

substitute

$A=(3.14)(36)^{2}$

$A=4,069.44\ in^{2}$

step 2

Find the circumference

we know that

The circumference of a circle (circular tablecloth) is equal to

$C=\pi D$

we have

$D=72\ in$

$\pi =3.14$

substitute

$C=(3.14)(72)$

$C=226.08\ in$

5 0

3 years ago

Solve the following system of equations algebraically:<br> y = x^2+7x−4 <br> y = −x−4

oksian1 [2.3K]

Y = x² + 7x - 4
y = -x - 4

x² + 7x - 4 = -x - 4
+ x + x
x² + 8x - 4 = -4
+ 4 + 4
x² + 8x = 0
x(x) + x(8) = 0
x(x + 8) = 0
x = 0 or x + 8 = 0
   - 8 - 8
x = -8

  y = -x - 4
  y = -0 - 4
  y = 0 - 4
  y = -4
(x, y) = (0, -4)
or
y = -x - 4
y = -(-8) - 4
y = 8 - 4
y = 4
(x, y) = (-8, 4)

The solutions are (0, -4) and (8, -4).

7 0

3 years ago

Read 2 more answers

Teje ratio of adulta to children attedening a new exhibit at the museum was found 8:5 based on this ratio if 390 people attended

Ratling [72]

8x - adults
5x - children

$8x+5x=390\\
13x=390\\
x=30\\\\
5x=5\cdot30=150$