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Elina [12.6K]
3 years ago
7

Which trig ratio can be used to find the measure of angle A?

Mathematics
1 answer:
Anna35 [415]3 years ago
5 0

Answer:

arc cosine (4/5)

(the third answer)

Step-by-step explanation:

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determine the equation of the parabola (simplified) with roots -3+sqrt6 and -3-sqrt6, and passing through the point (-1,4)
klio [65]

Given:

Roots:

\begin{gathered} -3+\sqrt[]{6} \\ -3-\sqrt[]{6} \end{gathered}

Point: (-1,4)

To determine the equation of the parabola with the given roots and point, we find the missing values first.

Since the roots are given, we can say that the equation is:

y=a(x+3-\sqrt[]{6})(x+3+\sqrt[]{6})

Next, we expand the terms.

y=a(x^2+6x+3)

Then, we plug in x= -1, and y=4 into the equation to get the value of a.

\begin{gathered} y=a(x^2+6x+3) \\ 4=a((-1)^2+6(-1)+3) \\ \text{Simplify and rearrange} \\ 4=a(-2) \\ a=\frac{4}{-2} \\ a=-2 \end{gathered}

So,

undefined

6 0
2 years ago
Are 3/4 and 12/9 equivalent explain your answer?​
julia-pushkina [17]

yes

12/9=4/3

we used reciprocal here

7 0
3 years ago
Find the area of the composite figure.
Umnica [9.8K]

Answer:

7168

Step-by-step explanation:

5 0
3 years ago
The lengths of the legs of a right triangle are 4.5 inches and 6 inches.
OLga [1]
7.5
Using the Pythagorean theorem you can determine this answer! Let me know if I’m wrong!
4 0
2 years ago
Read 2 more answers
What is the answer please
MrRissso [65]

Answer:

Step-by-step explanation:

ΔABE ~ ΔACD

In similar triangles, corresponding sides are in same ratio.

\dfrac{AE}{AD}=\dfrac{AB}{AC}\\\\\\\dfrac{12}{18}=\dfrac{9}{9+x}

\dfrac{2}{3}=\dfrac{9}{9+x}

Cross multiply,

2*(9+x) = 3*9

2*9 + 2*x = 27

18 + 2x = 27

       2x = 27 - 18

       2x = 9

          x = 9/2

x = 4.5

6 0
3 years ago
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