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stellarik [79]
2 years ago
8

Round your answer to the nearest hundredth.

Mathematics
1 answer:
Serga [27]2 years ago
4 0

Answer:

cos(a) =  \frac{ac}{ab}  \\ cos \: 40° =  \frac{x}{4}  \\ x = 4 \cos40° \\ x = 3.0641 \\  \\ approimatly \\ x = 3.06

You might be interested in
Finley makes 1 batch of her favorite shade of orange paint by mixing 5 liters of yellow paint with 3 liters of red paint. How ma
Zielflug [23.3K]
Finley can make 5 batches of her favorite orange paint if she has 15 liters of red paint. You can find this by dividing 15 by 3. The information about the yellow paint is unnecessary information and can be overlooked in the context given, and by dividing 15 by 3, you get 5.
7 0
3 years ago
Construct a 95% prediction interval for y given x=-3.5, ^y= 2.097x - .552 and se= .976​
Rasek [7]

Answer:

95% Confidence interval for y

= (-9.804, -5.979)

Lower limit = -9.804

Upper limit = -5.979

Step-by-step explanation:

^y= 2.097x - 0.552

x = -3.5

Standard error = 0.976

Mathematically,

Confidence Interval = (Mean) ± (Margin of error)

Mean = 2.097x - 0.552 = (2.097×-3.5) - 0.552 = - 7.8915

(note that x=-3.5)

Margin of Error is the width of the confidence interval about the mean.

It is given mathematically as,

Margin of Error = (Critical value) × (standard Error of the mean)

Critical value for 95% confidence interval = 1.960

Standard Error of the mean = 0.976

95% Confidence Interval = (Mean) ± [(Critical value) × (standard Error of the mean)]

CI = -7.8915 ± (1.960 × 0.976)

CI = -7.8915 ± 1.91296

95% CI = (-9.80446, -5.97854)

95% Confidence interval for y

= (-9.804, -5.979)

Hope this Helps!!!

3 0
3 years ago
PLEASE HELP ASAP
VARVARA [1.3K]

Answer:

okok so the anwser is 1+1

Step-by-step explanation:

1 and add another is 2

boom.

:)

3 0
3 years ago
Help I will give brainly if correct
yanalaym [24]

Answer: 135.42

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Given f(x) = x^2-2x+5<br> Find f(-2)
lbvjy [14]

Answer:

<h2>f(-2) = 13</h2>

Step-by-step explanation:

f(x) = x² - 2x + 5

Yo find f(-2) substitute the value of x that's - 2 into f(x) that is for every x in f (x) replace it with - 2

So we have

f( - 2) = (-2)² - 2(-2) + 5

= 4 + 4 + 5

= 8 + 5

We have the final answer as

<h3>f(-2) = 13</h3>

Hope this helps you

7 0
3 years ago
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