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Anni [7]
3 years ago
7

8x – 9y = –61 x +9y = 43 what is the y coordinate?

Mathematics
1 answer:
marishachu [46]3 years ago
4 0

Answer:

The answer is y=5

Step-by-step explanation:

9x=-18

x=-2

-2+9y=43

9y=45

y=5

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1. If $18,000 is invested at 6% compounded monthly, what is the amount after 7 years?
stira [4]
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R=6%
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Substitute the numbers an u will fin the answer
8 0
3 years ago
4 cot theta<br>=<br>tan theta<br>how do I I find the value of quadrant?​
Ray Of Light [21]

Answer:

4cotα=tanα

4(1/tanα)=tanα

(4/tanα)=tanα

cross multiply

=> 4=tan²α

√4=√tan²α

±2=tanα

α=arc( tan) |2|

α=63.4° ( in first quadrant)

and

α=180+63.4=243.4 in the third quadrant

since we also found a negative answer( i.e –2) then α also lies in quadrants where it gives a negative value(i.e second and fourth quadrants)

α=180–63.4=116.6° in the second quadrant

α=360–63.4=296.6 in the fourth quadrant

therefore theta( in my case, alpha) lies in all four quadrants and is equal to:

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5 0
3 years ago
About how much medicine is in a medicine bottle
Paraphin [41]

Answer:

For measuring such small amounts of medicine, your doctor may give you a 1 cc syringe (there is that cubic centimeter thing again - remember, it is the same as a milliliter - ml).

...

measurement of medicines.

1/4 teaspoon 1.25 ml

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Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The systolic blood pressure (given in millimeters) of males has an approximately normal distribution with mean μ = 122 and stand
mash [69]

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Step-by-step explanation:

7 0
3 years ago
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patriot [66]

Answer:

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Step-by-step explanation:

A. 180 - 133 = 47

so you have two angles found, which is 57 and 47. Add them together and subtract from 180. You get 76

B. 68 + 90 = 158

You subtract the 158 from 180 and get 22

C. This took some guess work, but when you multiply 58 by 2 you get 116. When subtracted from 180 you get 64. If you add 58 + 58 + 64, you get 180, so this made sense

D. There's an actual rule in trig that explains this, but I forgot it. If you look at the top angle, the other side of the line added to the 68 is a right angle. So you subtract 68 from 90 and get 12. Because there is already the right angle in the triangle, you just need the other two angles to equal 90, and because of the 68 that we found in the other triangle, this made sense.

Sorry, not the best at explanations. Hope that helped

8 0
3 years ago
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