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2 years ago

Lee was 2 under par on the first hole, 3 under par on the second and third hole,

1 answer:

4 0

Ndnddndndndndndndndndndndndnnddnbddndndndndndndndndndndndndndjdjdfjdjfjdjdjdjdjfjfjdjfjfnffnfnfndjdjdjdjdjdjdjdjdjdjdjjrjrrhnnsnxnxnxccccccgvccccccfffffkdmdmdmdmdmdmdmdmdmfmfmfmfm

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How do I simplify this expression

emmainna [20.7K]

7 squared is 7 x 7 so the answer would be 49 I believe

5 0

7 months ago

Use sigma notation to represent the sum of the first seven terms of the following sequence -4,-6,-8.....

lina2011 [118]

Answer:Answer:

$\sum\left {{7} \atop {1}} \right -n(3+n)$

Step-by-step explanation:

Given the sequence -4,-6,-8..., in order to get sigma notation to represent the sum of the first seven terms of the sequence, we need to first calculate the sum of the first seven terms of the sequence as shown;

The sum of an arithmetic series is expressed as $S_n = \frac{n}{2}[2a+(n-1)d]$

n is the number of terms

a is the first term of the sequence

d is the common difference

Given parameters

n = 7, a = -4 and d = -6-(-4) = -8-(-6) = -2

Required

Sum of the first seven terms of the sequence

$S_7 = \frac{7}{2}[2(-4)+(7-1)(-2)]\\\\S_7 = \frac{7}{2}[-8+(6)(-2)]\\\\S_7 = \frac{7}{2}[-8-12]\\\\\\S_7 = \frac{7}{2} * -20\\\\S_7 = -70$

The sum of the nth term of the sequence will be;

$S_n = \frac{n}{2}[2(-4)+(n-1)(-2)]\\\\S_n = \frac{n}{2}[-8+(-2n+2)]\\\\S_n = \frac{n}{2}[-6-2n]\\\\S_n = \frac{-6n}{2} - \frac{2n^2}{2}\\S_n = -3n-n^2\\\\S_n = -n(3+n)$

The sigma notation will be expressed as $\sum\left {{7} \atop {1}} \right -n(3+n)$ . <em>The limit ranges from 1 to 7 since we are to find the sum of the first seven terms of the series.</em>

3 0

2 years ago

Ana fue a comprar pan, compró 7 bolillos de $ 1.45, 3 panes de dulce de $ 7.60 y 4 panes de dulce de $ 8.40. ¿Cuánto pagó en tot

xz_007 [3.2K]

Answer:

$66.50

Step-by-step explanation:

Given that

she bought seven 1.45 rolls

Three 7.60 sweet loaves

and four 8.40 sweet rolls

We need to find out how much she paid in total

So,

= 7 × 1.45 + 3 × 7.60 + 4 × 8.40

= $10.15 + $22.80 + $33.60

= $66.50

Hence, she paid in total of $66.50

The same would be considered and relevant

6 0

2 years ago

Fill in the table with the cost to swim the given number of days. Each amount should be the total cost to swim that number of da

Lesechka [4]

Answer:

y = 0x + 70

y = 4x + 15

y = 6x + 0

Step-by-step explanation:

6 0

2 years ago

At a sandwich shop, any sandwich costs $4.50, plus $0.25 for each extra topping.

Reptile [31]

Answer:

a)$5.25

b)$7.75

c)sorry i’m not sure

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers