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kifflom [539]
3 years ago
8

A LOT OF POINTS!!!!!!! PLEASE HELP ME BECAUSE I DONT GET!!! Explain why 9(t - 1) is equivalent to 9t - 9 PLEASE TELL ME THE CORR

ECT ANSWER AND WHY STEP BY STEP!!! WHOEVER DOES THIS WILL GET THE BRAINLIEST!!!
Mathematics
1 answer:
Misha Larkins [42]3 years ago
4 0
Easy there on the caps, partner.

The nine, using the distributive property, distributes itself across the brackets, and so 9 times t is 9t and 9 times -1 is -9.

Therefore, 9(t-1) = 9t -9
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HELP PLEASE 21 POINTS PLEASE HELP ME!!!! <3
Anna007 [38]

1)

n         1          2         3           4         5         6

f(n)    1033    932     831      730     629     528

First term (a₁):  <u>1033 </u>          Common difference (d): <u>-101 </u>

Explicit rule:  a_{n} = 1134 - 101n    Recursive rule: a_{n} = a_{n-1} - 101

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

a_{n} = 1033 - 101(n - 1)

a_{n} = 1033 - 101n + 101

a_{n} = 1134 - 101n

***********************************************************************************

2)

n         1          2         3           4         5         6

f(n)   -39      -29       -19        -9          9        19

First term (a₁):  <u> -39  </u>          Common difference (d): <u> +10  </u>

Explicit rule:  a_{n} = -49 + 10n    Recursive rule: a_{n} = a_{n-1} + 10

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

a_{n} = -39 + 10(n - 1)

a_{n} = -39 + 10n - 10

a_{n} = -49 + 10n

***********************************************************************************

3)

n         1          2         3           4         5         6

f(n)   3.75      2.5     1.25        0      -1.25     -2.5

First term (a₁):  <u> 3.75  </u>          Common difference (d): <u> -1.25  </u>

Explicit rule:  a_{n} = 5 - 1.25n    Recursive rule: a_{n} = a_{n-1} - 1.25

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

a_{n} = 3.75 - 1.25(n - 1)

a_{n} = 3.75 - 1.25n + 1.25

a_{n} = 5 - 1.25n


6 0
3 years ago
What is the compatable number of 358/3
Fudgin [204]
Round 358 to the nearest 5 or 10, which would be 360. 360/3=120 so the compatible number would be 120. 
5 0
3 years ago
Hi this is algebra math. It’s been a while since I’ve been on this app but I need some help on if the problem graphed the slope
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8 0
2 years ago
A company is manufacturing a gear in the shape of a regular polygon. The measure of each angle of the gear is 162º. How many sid
jasenka [17]
Let us have a recap first.

For triangle it's 180 degrees in total
Square has 360 degrees in total
Pentagon has 540 degrees total
Hexagon has 720 degrees in total

So these polygons increase by 180 degrees for every side to the polygon starting at three sides instead of one.
Let:

n = number of sides in the polygon

(n-2) * 180 = degrees total inside the polygon
(n-2) * 180 / n = degrees for each angle in polygon

Substitute:

(n-2) * 180 / n = 162
multiply both sides by n
(n-2) * 180 = 162n
then divide both sides by 180

n-2 = 162n / 180
n-2 = 0.9n
subtract 0.9n and add 2 to both sides to get n alone
0.1n = 2

n = 20 sides
Thus,

Icosagon (20-gon) is the term for a 20 sided polygon
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3 years ago
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I believe the only true one is B.

3 0
3 years ago
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