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Karolina [17]
3 years ago
6

PLS HELP WILL MARK BRAINLIEST + 10 POINTS!!!!!

Mathematics
1 answer:
Setler79 [48]3 years ago
5 0
Let sin⁻¹(\frac{ \sqrt{3} }{2}) = x
Therefore, sin(x) = \frac{ \sqrt{3} }{2}
x should lie in first quadrant because √3 and 2 both are positive.

Therefore, sin(x) = 60° = π/3 
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<img src="https://tex.z-dn.net/?f=f%28x%29%3D-4x%5E%7B2%7D%2B5x" id="TexFormula1" title="f(x)=-4x^{2}+5x" alt="f(x)=-4x^{2}+5x"
JulijaS [17]

Answer:

Domain= (-inf,inf)/(-∞,∞)

Range= (-inf,25/16]

x-intercepts= (0,0), (5/4,0)

y-intercepts=(0,0)

vertex= maximum (5/8,25/16)

8 0
2 years ago
In triangle ABC angle A=45 angle B =40 and a=7.Which equation should you solve to find b?
coldgirl [10]

We have been given that in triangle ABC angle A=45 angle B =40 and a=7. We are asked to find the equation that we can use to solve for 'f'.

We have two angles and opposite sides to these angles.

We will use Law of Sines to solve our given problem.

\frac{a}{\sin(A)}=\frac{b}{\sin(B)}=\frac{c}{\sin(C)}, where a, b and c are opposite sides corresponding to angles A, B, and C respectively.

The angle opposite to side b is 40 degrees and angle opposite to side a is 45 degrees.

Upon substituting these values in Law of Sines, we will get:

\frac{7}{\sin(45^{\circ})}=\frac{b}{\sin(40^{\circ})}

Therefore, our required equation would be \frac{7}{\sin(45^{\circ})}=\frac{b}{\sin(40^{\circ})}.

3 0
3 years ago
Heeeeeeeelp!!!!!!!!!!!
Natasha_Volkova [10]
A is the answer because if you calculate the answer correctly. that will be so.
8 0
3 years ago
Isaak is writing an explicit formula to represent the sequence.
gulaghasi [49]
In a geometric progression:
a, b, c, d...
The common ratio can be obtained using:
b/a = c/b = d/c
b/a = 112 / 64 = 1.75
c/b = 196 / 112 = 1.75
d/c = 343 / 196 = 1.75
The common ratio = 1.75
7 0
2 years ago
Read 2 more answers
Eddie drew a scale drawing of a house and its lot. The scale of the drawing was 1 inch : 6 feet. If the actual width of the porc
dangina [55]

Answer:

3 inches

Step-by-step explanation:

18/6=3

5 0
2 years ago
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