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2 years ago

If A = -3n + 2, and B = 5n - 7, what is the value of A + B, in simplest form?

Mathematics

1 answer:

Sever21 [200]2 years ago

4 0

Answer:

I think the answer is 2n-5

(-3n + 2)+(5n - 7)

-3n+5n=2n

2+(-7)=-5

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Suppose there are 310 first-year lawyers in a particular metropolitan area with an average starting salary of $156,000 and a sta

vlada-n [284]

Answer:

$ 2263

Step-by-step explanation:

In this case to calculate the standard error of the mean, we only need the standard deviation (sd) and the number of the random sample (n).

sd = 13000

n = 33

SE = sd / (n ^ (1/2))

replacing:

SE = 13000 / (33 ^ (1/2))

SE = 2263.01

What the standard error of the mean for a random sample of 33 first-year lawyers means is $ 2263

6 0

2 years ago

What is the angle pair relationship between angles 6 and 8?

djverab [1.8K]

Those are vertical angles

5 0

3 years ago

Suppose an=3an-1 -5an-2 -4an-3. and a4= -7, a5=-36, a6=-85 , find a1 , a2, a3

maria [59]

Answer:

$a_1=4\\\\a_2=0\\\\a_3=3$

Explanation:

The equation is:

$a_n=3a_{n-1}-5a_{n-2}-4a_{n-3}$

and

$a_4=-7, a_5=-36, a_6=-85$

1. Subsittute n = 6 into the equation:

$a_6=3a_{5}-5a_{4}-4a_{3}$

Now subsititute the known values:

$-85=3(-36)-5(-7)-4a_{3}$

You can solve for $a_3$

$-85=-108+35-4a_{3}\\\\4a_3=12\\\\a_3=12/4\\\\a_3=3$

2. Substitute n = 5 into the equation:

$a_5=3a_{4}-5a_{3}-4a_{2}$

Substitute the known values and solve for $a_2$

$-36=3(-7)-5(3)-4a_{2}\\\\4a_2=-21-15+36=0\\\\a_2=0$

3. Substitute n = 4 into the equation, subsitute the known values and solve for $a_1$

$a_4=3a_{3}-5a_{2}-4a_{1}$

$-7=3(3)-5(0)-4a_{1}\\\\4a_1=9+7=16\\\\a_1=4$

7 0

2 years ago

Find the value of C. Thanks for the help.

vlada-n [284]

Answer:

You must be trolling. 48 degrees

Step-by-step explanation:

48 plus 42 = 90

7 0

3 years ago

Read 2 more answers

Jenny watched a movie about aliens who never stop growing. Every alien is 10 centimeters tall at birth and grows exactly 8 centi

ss7ja [257]

Answer:

h = 10 + 8y

Step-by-step explanation:

Given that :

Height of ght if all alien at birth = 10cm

Growth rate per year = 8 cm

Let:

y = number of years since birth

h = alien's height in centimeter

Relationship between h and y

h = Initial height + (growth rate per year*number of years)

h = 10 + 8y

7 0

2 years ago