On Monday Jill ought 3 teas and 5 coffees for £10.50 On Tuesday she bought 4 teas and 4 coffees for £10 On Wednesday she bought
1 answer:
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Answer:
1) B = 66.5° c = 10.9
Step-by-step explanation:
I will do question one as an example. In general, for these questions you want to use the appropriate trigonometric ratios to solve for the variables and/or apply logic using rules regarding triangles. See attached image for all solving steps.
For side c, we can use Cosine of angle A for a ratio between 10 and c. When we write out the equation, we can solve for side c. So when we write it out, we get the equation:
cos23.5 = ¹⁰⁄c
c = ¹⁰⁄cos₂₃.₅
c = 10.9044 (make sure to round to the nearest tenth, which is one decimal place)
For angle B, since they have given two angles, you can solve for B since all angles of a triangle add up to 180 degrees.
So b = 180 - (90 + 23.5) = 180 - 113.5
b = 66.5
- It is also possible to solve this using sine of angle B and solve it from there, but applying the theory this way is much simpler. (this is on the image if you're curious about it)
I hope this helps you with the other 3 questions.
1. 
add 5 to both sides
2.
subtract 2 from both sides
3.
add 2 to both sides
and it's the 4th graph option
4.
subtract 5 from both sides
and it's the 2nd graph option
5.
add 5 to both sides
Answers:
1. 3rd option
2. 1st option
3. 4th option
4. 2nd option
5. 2nd option
Hope this helps!
add 5 to both sides
2.
subtract 2 from both sides
3.
add 2 to both sides
4.
subtract 5 from both sides
5.
add 5 to both sides
Answers:
1. 3rd option
2. 1st option
3. 4th option
4. 2nd option
5. 2nd option
Hope this helps!