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attashe74 [19]
3 years ago
8

What is the value of cosθ given that (−2, 9) is a point on the terminal side of θ ? 985√85 −985√85 285√85 −285√85​

Mathematics
2 answers:
Oksana_A [137]3 years ago
6 0

Answer:

yes mark her brainliest plz

BabaBlast [244]3 years ago
3 0

Answer:

-2√85√85

Step-by-step explanation:

Hope it helps you dear...

Mark me as brainlist...

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michael mixes 60 ounces of red paint with 15 ounces of blue paint to get a shade of purple.what is the ratio of red paint to blu
dsp73

Answer: 4:1

Step-by-step explanation:

Red paint = 60 ounces

Blue paint = 15 ounces

Ratio = 60/15 = 4/1 = 4:1 to the lowest term.

4 0
3 years ago
Eliminate the parameter. x = 5t, y = t + 8
uysha [10]
\bf \begin{cases}
x=5t\implies \frac{x}{5}=\boxed{t}\\
y=t+8\\
----------\\
y=\boxed{\frac{x}{5}}+8
\end{cases}
3 0
2 years ago
Read 2 more answers
A certain statistic will be used as an unbiased estimator of a parameter. Let R represent the sampling distribution of the estim
7nadin3 [17]

Answer:

c. The expected values of R and S will be equal, and the variability of R will be greater than the variability of S.

Step-by-step explanation:

This is Central Limit Theorem concept in which independent variables are added and form a normal distribution. The random sample of n sample size is selected which calculates normally distributed mean and variance. The expected value of samples distributor will be higher than the sample distribution.

6 0
3 years ago
Zoom in to see more clear :)
algol13

Answer:

1) x=30 degrees

2)y=20 degrees

1) 3x+2x+1x= 6x (a triangle is normally 180 degrees) 180 divide 6=30 (this is because 6 Xs make up the triangle)

2) 2y+5y+5+y+15= 8y+20, (since a triangle has 180 degrees) 8y+20=180 (-20 from both sides) 8y=160, 160 divide 8=20

(I hope this makes sense)

5 0
3 years ago
The value of a treadmill bought new for $1000 decreases 5% each year. Use a graph to predict the value of the treadmill in 5 yea
Georgia [21]
The formula is
V (t)=V0 (1-r)^t
V (t)?
V0 1000
R 0.05
T 5 years

V (5)=1,000×(1−0.05)^(5)=773.78
6 0
3 years ago
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