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disa [49]
2 years ago
6

3 (n - 1) + 2 (n + 2)

Mathematics
2 answers:
Vikentia [17]2 years ago
5 0
3n - 3 + 2n + 4
(3n + 2n) + (-3 + 4)
5n + 1
Paul [167]2 years ago
3 0
3n - 1 + 2n + 2
1n + 3
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Explain how a personal budget relates to and takes into account your personal financial goals.
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what? what subject is it

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2 horizontal and parallel lines are intersected by 2 diagonal lines to form a triangle with exterior angles. The top angle of th
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11.25

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sketch a triangle and fill in the sides,add the sides and equate to 180, collect the like terms to get the value of x=11.25

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Angie's car is valued at $22,000, and she owes $20,000 on it. What is her<br><br> current equity?
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Angie’s current equity on her car is 2,000

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1 year ago
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What is the exact value of the cos F?
Galina-37 [17]

Answer:

cos(F) = 9/41

Step-by-step explanation:

The triangles are similar, so you know that ...

... cos(D) = cos(A) = 40/41.

From trig relations, you know ...

... cos(F) = sin(D)

and

... sin(D)² +cos(D)² = 1

So ...

... cos(F) = sin(D) = √(1 -cos(D)²) = √(1 -(40/41)²) = √(81/1681)

... cos(F) = 9/41

_____

The ratio for cos(A) tells you that you can consider AB=40, AC=41. Then, using the Pythagorean theorem, you can find BC = √(41² -40²) = √81 = 9.

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... cos(F) = cos(C) = 9/41

7 0
2 years ago
A lab technician is tested for her consistency by making multiple measurements of the cholesterol level in one blood sample. The
Zanzabum

Step-by-step explanation:

Given precision is a standard deviation of s=1.8, n=12,  target precision is a standard deviation of σ=1.2

The test hypothesis is

H_o:σ <=1.2

Ha:σ > 1.2

The test statistic is

chi square = \frac{(n-1)s^2}{\sigma^2}

=\frac{(12-1)1.8^2}{1.2^2}

=24.75

Given a=0.01, the critical value is chi square(with a=0.01, d_f=n-1=11)= 3.05 (check chi square table)

Since 24.75 > 3.05, we reject H_o.

So, we can conclude that her standard deviation is greater than the target.

5 0
2 years ago
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