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alex41 [277]
2 years ago
8

Hi Help me with question 6b) pls

Mathematics
1 answer:
Romashka-Z-Leto [24]2 years ago
5 0

Answer:

k = 9

Step-by-step explanation:

Consider the pattern on the right side , that is

T_{k} = k(k + 2) + 1 = k² + 2k + 1

Equating

k² + 2k + 1 = 100 ( subtract 100 from both sides )

k² + 2k - 99 = 0 ← in standard form

(k + 11)(k - 9) = 0 ← in factored form

Equate each factor to zero and solve for k

k + 11 = 0 ⇒ k = - 11

k - 9 = 0 ⇒ k = 9

But k > 0 , then k = 9

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She will have to pay $53.75 in total.

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3 years ago
Are these ratios equivalent? 12 friends : 15 strangers AND 6 friends : 14 strangers
meriva

Answer:

No

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Answer:

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2 years ago
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Answer:

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Step-by-step explanation:

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The widths are already written width identical expressions x-2+x, but the lengths are given as different functions of x. Equating both expressions, we have:

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3 years ago
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Answer:

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