1. The answer is C.
2. It is the marginal relative frequency (The answer is D).
3. The answer is D.
4. The answer is D.
5. The answer is C.
Answer: 3x+1
Step-by-step explanation: you add the x value together & then you find the sum for 1,2, and -2
Hello there :}
Question:
What are the roots of the quadratic equation y= -x^2 - 2x + 3
Answer:
Replace y wit h 0 and solve for x
which,
x = 1,-3
Hope this helped!
-Shane
Answer:
- m∠A ≈ 53.13°
- m∠B ≈ 73.74°
- m∠C ≈ 53.13°
Step-by-step explanation:
An altitude to AC bisects it and creates two congruent right triangles. This lets you find ∠A = ∠C = arccos(6/10) ≈ 53.13°.
Since the sum of angles of a triangle is 180°, ∠B is the supplement of twice this angle, so is about 73.74°.
m∠A = m∠C ≈ 53.13°
m∠B ≈ 73.74°
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The mnemonic SOH CAH TOA reminds you of the relation between the adjacent side, hypotenuse, and trig function of an angle:
Cos = Adjacent/Hypotenuse
If the altitude from B bisects AC at X, triangle AXB is a right triangle with side AX adjacent to the angle A, and side AB as the hypotenuse. AX is half of AC, so has length 12/2 = 6, telling you the cosine of angle A is AX/AB = 6/10.
A diagram does not have to be sophisticated to be useful.