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Kipish [7]
3 years ago
6

Factorize cos2A - 5 cosA + 6

Mathematics
1 answer:
Tamiku [17]3 years ago
5 0

Answer:

Let's assign the variable x to cosA. The expression then becomes x² - 5x + 6. To factorize this we need to find two numbers that have a sum of -5 and a product of 6; these numbers are -2 and -3 so the expression becomes (x - 2)(x - 3). Since we know that x = cosA the final answer is (cosA - 2)(cosA - 3).

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- 3x + 4 and passes through the point (2,5)
Anuta_ua [19.1K]

Answer:

y=(x+13)/3

Step-by-step explanation:

the question is not quite clear, i think u mean y= -3x + 4

then, the slope of the line perpendicular to the given line is m1.m2= -1, hence, -3.m2= -1 m2 = 1/3

y-5=1/3(x-2) y=x/3+13/3 or y=(x+13)/3

6 0
3 years ago
LaTesha and Bernard are playing a game. Their scores for five games are shown in the table below. LaTesha’s and Bernard’s Scores
andre [41]

Answer:

The means differ by 1, but the ranges differ by 40.

Step-by-step explanation:

The mean for LaTesha's score is (92+45+67+36+80)/5= 64

The mean for Benards score is (63+68+62+69+53)/5= 63

The range for LaTeshas score is 92-36=56

The range for Benards score is 69-53=16

So, 64-63=1     and        56-16= 40

6 0
3 years ago
Carly spends 9 hours each day at her job what percentage of her day does she spend at work
EleoNora [17]
Carly spends 37.5% of her day at work
you solve this by doing 9 ÷ 24
7 0
3 years ago
Read 2 more answers
I dont know what to do.
Scorpion4ik [409]
Slope=\frac{ y_{2}- y_{1}  }{ x_{2} - x_{1} }

(3,5) and (1,9)
x1=3
y1=5
x2=1
y2=9

Slope=\frac{ y_{2}- y_{1} }{ x_{2} - x_{1} }
Slope=\frac{ 9- 5 }{ 1 - 3}
Slope=\frac{4}{ -2}
Slope=-\frac{4}{2} or -2

Answer:Slope=-2
3 0
3 years ago
A spinner has regions numbered 1 through 21. what is the probability that the spinner will stop on an even number or a multiple
sertanlavr [38]
10 of the numbers are even. 4 more are odd multiples of 3. The probability of landing on even or a multiple of 3 is (10+4)/21 = 2/3.
5 0
3 years ago
Read 2 more answers
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