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ICE Princess25 [194]
3 years ago
6

Find cos(2theta) if cos(theta)= 3/4

Mathematics
1 answer:
yuradex [85]3 years ago
6 0
Sin theta = 8/17 and theta is in the second quadrant. Find sin(2theta),cos(2theta),tan(2theta) exactly sin(2theta) cos(2theta) tan(2theta) sin(2theta) would it be 2 x (8/17) cos(2theta) would be 2 x (15/17) tan(2theta) would be 2 x (8/17 divided by 15/17) is this correct?
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Calculate the speed for a car that went a distance of 125<br> kilometers in 2 hours time.
IrinaVladis [17]

125÷2=67.5

67.5+67.5=125

4 0
3 years ago
Find the slope of the line that contains the points (6, -2) and (-3, 7).
Ira Lisetskai [31]
Slope = (y2 - y1)/(x2 - x1)
slope = (7 - -2)/(-3 - 6)
slope = 9/-9
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4 0
4 years ago
What is the connection between rate and slope
Paraphin [41]

Answer:

Step-by-step explanation:

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6 0
3 years ago
The dimensions of a rectangle are such that its length is 3 in more than its width if the length were doubled and if the width w
emmasim [6.3K]

Length (L): w + 3            ⇒2(w + 3)

width (w): w                    ⇒ w - 1

Area (A) = L x w

         A = (w + 3)(w)

         A = w² + 3w

*******************************************

       A + 176 = 2(w + 3)(w - 1)

(w² + 3w) + 176 = 2(w + 3)(w - 1)

w² + 3w + 176 = 2w² + 4w - 6

        3w + 176 = w² + 4w - 6

                 176 = w² + w - 6          

                   0 = w² + w - 182

                   0 = (w - 13) (w + 14)

0 = w - 13            0 = w + 14

w = 13                  w = -14

Since width cannot be negative, disregard -14

w = 13

Length (L): w + 3   = (13) + 3   = 16

Answer: width = 13 in, length = 16 in

7 0
3 years ago
It part A and it part B what the answer for both asap
nevsk [136]
1000 x 5 = 5000 

Lana's dad would take about 5000 steps.

5000 x 2 = 10,000

Lana would take about 10,000 steps.

Glad I could help, and good luck!

4 0
3 years ago
Read 2 more answers
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