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leva [86]
1 year ago
14

Given a and b are first quadrant angles, sin a=5/13 and cos b=3/5 evaluate sin (a-b)1) -33/652) 33/653) 63/65

Mathematics
1 answer:
bezimeni [28]1 year ago
5 0

The correct option is -33/65.

The solution is given below:

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An integer is three more than another integer. Twice the larger integer is two less
Amiraneli [1.4K]

Answer:

The integers are 4 and 7 or -2 and 1.

Step-by-step explanation:

You can make a system of equations with the description of the two integers.

1. x = y + 3

2. 2x + 2 = y^2

The simplest and the fastest way to solve this system in this case is substitution. You can substitute x for y + 3 in the second equation.

1. x = y + 3

2. 2(y + 3) + 2 = y^2

Now simplify and solve the second one. For convenience, I will just disregard the first equation for now.

2y + 6 + 2 = y^2

y^2 - 2y - 8 = 0

You can factor this equation to solve for y.

(y - 4) (y + 2) = 0

y = 4, y = -2

Now we can substitute the value of y for x in the first equation.

x = 7, x = 1

3 0
3 years ago
Can someone help, "Solve for x and y when 3y=12 and x+y = 6"
Lapatulllka [165]

Answer:

x=2

y=4

3 times 4 equals 12 and 2 plus 4 would equal six

7 0
3 years ago
A student organization wondered how many hours per week college students study during a term. Each of the 10 students in the org
Inga [223]

Answer:

No, a convenience sample was taken.Therefore, the sample may not be representative of all college students in terms of number of hours studied per week.

Step-by-step explanation:

One of the important conditions required in other to estimate the mean of the population from the confidence interval. Requires that the data must be a random Sample. This is to ensure that sample values are not biased and as such are representative of the larger group of data.

However, in the scenario described above, the sample chose. Are friend's of the student, this makes the data lack randomness as those who aren't friends to the student do not stand a chance of being selected. The sampling procedure employed is called convenience sampling.

4 0
3 years ago
Jan pick 3/4 of a gallon of strawberries in a half an hour. If she keeps picking strawberries at the same rate, how many gallons
krek1111 [17]
2 divided by 1/2
2 x 2/1 = 4
3/4 x 4/1 = 12/3
12/3 = 4
4 gallons, Hope this helps!
8 0
3 years ago
Read 2 more answers
PLS HELP !!!!!!!<br><br> Find the value of x. <br><br> x=
Gre4nikov [31]
The answer to that question is 1
3 0
3 years ago
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