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3 years ago

2,11,20 find the t15

Mathematics

1 answer:

astraxan [27]3 years ago

5 0

Answer:

128

Step-by-step explanation:

There is a common difference between consecutive terms, that is

11 - 2 = 20 - 11 = 9

This indicates the sequence is arithmetic with n th term

$t_{n}$ = t₁ + (n - 1)d

where t₁ is the first term and d the common difference

Here t₁ = 2 and d = 9 , thus

t₁₅ = 2 + (14 × 9) = 2 + 126 = 128

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the question in English

Mateo will reproduce a photo measuring 5 cm per side on a scale of 3/4

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we know that

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Let

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we have that

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substitute the values

$y=\frac{3}{4}*5=3.75\ cm$

therefore

<u>the answer Part a) is </u>

the length side of the copy measure is $3.75\ cm$

Part b)

we know that

the size of the original photo is------> $5*5=25\ cm^{2}$

the size of the copy is------> $3.75*3.75=14.06\ cm^{2}$

$14.06\ cm^{2} < 25\ cm^{2}$

therefore

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The size of the copy be smaller than the original

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The number of bacteria, B, in a refrigerated food is given by the function b(t) = 15t2 - 60t + 125, where t is the temperature o

Nimfa-mama [501]

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Step-by-step explanation:

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Now, the number bacteria in the food in h hours is given by:-

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$b(t(h))=135h^2+180h+125$

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Step-by-step explanation:

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