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photoshop1234 [79]
3 years ago
9

I just need help on this problem​

Mathematics
2 answers:
Olin [163]3 years ago
7 0

Answer:

16

Step-by-step explanation:

8n ; n=2

substitute 2 for n

8*2 = 16

gizmo_the_mogwai [7]3 years ago
6 0

Answer:

16

Step-by-step explanation:

plug in 2 for the letter n. 8(2)=16

parantheses mean multiplication.

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Cos(x+y)/cos(x)sin(y)=cot(y)-tan(x)
zhuklara [117]
So there is an identity we'll need to use to solve this:

cos(x+y) = cosxcosy - sinxsiny

replace the numerator with the right hand side of that identity and we get:

(cosxcosy - sinxsiny)/cosxsiny

Separate the numerator into 2 fractions and we get:

cosxcosycosxsiny- sinxsiny/cosxsiny

the cosx's cancel on the left fraction, the siny's cancel on the right fraction and we're left with:

cosy/siny - sinx/cosx

which simplifies to:

coty - tanx




7 0
3 years ago
For the following right triangle, find the side length x. Round your answer to the nearest hundredth.
Pani-rosa [81]

Answer:

x = 14.25

Step-by-step explanation:

Start with a^2 + b^2 = c^2

a = 11

b = x

c = 18

plug in and solve

11^2 + x^2 = 18^2

121 + x^2 = 324 - Simplify

x^2 = 203 - subtract 121 from both sides

x = 14.247 rounds to 14.25 - square root on both sides

7 0
3 years ago
What is <br> 5(2y+4)-11=139
exis [7]

Answer:

10y + 20 -11 =139

10y = 130

y = 130 / 10

y = 13

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
The opposite of 12 plus a number
dlinn [17]

Im pretty sure the answer is Twelve :))

6 0
3 years ago
A basket of laundry is being separated. Divide 48 pieces of clothing into 2 groups so that the ratio is 1:3
Alla [95]
Ratio is 1:3.....added = 4

1/4(48) = 48/4 = 12
3/4(48) = 144/4 = 36

the 2 groups will be 12 and 36
5 0
3 years ago
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