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Butoxors [25]
3 years ago
10

Solve for x. x² = 9 x=±3 x=±4.5 x=±18 x=±81

Mathematics
1 answer:
Burka [1]3 years ago
8 0
I pretty sure x equals 3
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Which fraction represents the shaded part of the grid?
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30%

Step-by-step explanation:

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3 years ago
two terms of an arithmetic sequence are a6= 40 and a20= -16. write and explicit rule for the nth term
Lana71 [14]

Answer:

Tn = 64-4n

Step-by-step explanation:

The nth term of an AP is expressed as:

Tn = a+(n-1)d

a is the common difference

n is the number of terms

d is the common difference

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T6 = a+(6-1)d

T6 = a+5d

40 = a+5d ... (1)

Given the 20th term a20 = -16

T20 = a+(20-1)d

T20 = a+19d

-16 = a+19d... (2)

Solving both equation simultaneously

40 = a+5d

-16 = a+19d

Subtracting both equation

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56 = -14d

d = 56/-14

d = -4

Substituting d = -4 into equation

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a = 20+40

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Given a = 60, d = -4, to get the nth term of the sequence:

Tn = a+(n-1)d

Tn = 60+(n-1)(-4)

Tn = 60+(-4n+4)

Tn = 60-4n+4

Tn = 64-4n

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3 years ago
Katie has a cat named
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1/2 a cup or 0.5 cups per serving

Step-by-step explanation:

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Don't think this helped at all but I tried my hardest, sorry if you get your problem wrong. Hope you have a good day :D

4 0
3 years ago
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