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user100 [1]
2 years ago
14

Simplify the following expression. 3m+4n-6n

Mathematics
1 answer:
Ksju [112]2 years ago
8 0

Answer:

3m-2n

Step-by-step explanation:

xd..............

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Indicate the general rule for the arithmetic sequence with a3 = -12 and a8 = -37
Mandarinka [93]

Answer:

The general rule is a_n = -2 - 5(n-1)

Step-by-step explanation:

Arithmetic sequence:

In an arithmetic sequence, the difference between consecutive terms is always the same, and this difference is called common difference.

The general rule of an arithmetic sequence is given by:

a_{n} = a_1 + (n-1)d

In which a_1 is the first term and d is the common difference.

We can also find the nth term as a function of a term m, using:

a_n = a_m + (n-m)d

a3 = -12 and a8 = -37

First we find the common difference. So

a_n = a_m + (n-m)d

a_8 = a_3 + (8-3)d

-37 = -12 + 5d

5d = -25

d = -\frac{25}{5}

d = -5

So

a_n = a_1 - 5(n-1)

Finding the first term:

a_n = a_1 - 5(n-1)

Since a_3 = -12

a_n = a_1 - 5(n-1)

a_3 = a_1 - 5(3-1)

a_1 = a_3 + 10 = -12 + 10 = -2

So the general rule is:

a_n = a_1 - 5(n-1)

a_n = -2 - 5(n-1)

6 0
2 years ago
What is the value of x? edgenuity
Margaret [11]

Answer:

45

Step-by-step explanation:

x + 3x = 180

Combine like terms : 4x = 180

180/4 = 45

4 0
3 years ago
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HELP ASAP True or False: The church was able to perform all of Palestrina’s masses.
jek_recluse [69]

Answer:

true

Step-by-step explanation:

5 0
2 years ago
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I WILL AWARD BRAINLIEST!! PLEASE HELP!!!<br> Find the areas of the trapezoids.
Galina-37 [17]

Answer:

A = 12 units ^2

Step-by-step explanation:

The area of the trapezoid is found by

A = 1/2 (b1+b2)h

b1 = 2

b2 = 4

h = 4

I found these by looking at the graph

A = 1/2(2+4) 4

A = 1/2(6*4)

A = 12 units ^2

8 0
2 years ago
Divide 71/9 2/34 <br><br>A. 21/4 <br>B. 23/4<br>C. 41/4<br>D. 413/16<br><br><br>HELLPPPPPP ​
ozzi

Answer:

A 5.25, B 5.75, C 10.25, D 25.8125

Step-by-step explanation:

8 0
2 years ago
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