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hjlf
3 years ago
9

PLZ HELP WITH THIS!!!! IM TIMED AND NEED CORRECT ANSWERS

Mathematics
1 answer:
Georgia [21]3 years ago
4 0

1.   Using the formula for nth term ( = a1 * r^(n-1)

the 5th term = (-2)*(1/4)^4

= -2/256  = -1/128  (answer)

2.   The 4 terms between 1 and  32 are found as follows:-

a1 = 1 and  a6 = 32   so  32/1 = a6/a1

 therefore 32/1 = a1r^5 / a1

so r^5 = 32 and r = 2

so 4 terms are a1r,  a1r^2, a1^r^3 and a1r^4

= 2, 4, 8, 16   (answer)

3.   You need the sum of 10 terms where a1 = -2 and r = 3

S10  = -2 * (3^10 - 1) / (3 - 1)

= -59058

4.  Sum to infinity  = a1 / (1 - r)

a1 = 1 and r = 1/2

so the answer is  1 /  (1 - 1/2)

= 1 / 1/2

= 2   (answer)

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27 hundredths + 7 hundredths
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34 hundredhs

Step-by-step explanation:

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3 years ago
A linear function has a slope of 4 and a y-intercept of (0,-8). What is the x-intercept of the line?
miss Akunina [59]

Answer:

The answer to your question is 2 or (2, 0)

Step-by-step explanation:

Data

slope = m = 4

y-intercept = -8

Process

1.- Write the equation of the line in the slope y-intercept

                    y = mx + b

In this equation:

m = slope

b = y-intercept

-Substitution

                   y = 4x - 8

2.- To find the x-intercept, consider that y = 0 and solve for x.

                   0 = 4x - 8

                   4x = 8

                     x = 8/4

                    x = 2    or (2, 0)

5 0
3 years ago
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Which figure shows an example of symmetry?<br> A.<br> B.<br> C.<br> D.
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Step-by-step explanat:

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(1 pt) Which operation should be performed first according to the order of operations? 55 ÷ 11 + 16 • [12 • 3 + (54 ÷ 3) – 17] A
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You should do what is in the parentheses first 
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3 years ago
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Fill in the blanks
katen-ka-za [31]
1 - 9
2 - 87
3 - -2
4 - -9
that’s the answers for them :), have a great day !! :)
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3 years ago
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