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2 years ago

During a certain epidemic, the number of people that are

Mathematics

1 answer:

qaws [65]2 years ago

8 0

9514 1404 393

Answer:

1367 people

Step-by-step explanation:

The wording "a rate proportional to the number" indicates the function is exponential. The growth factor is 1200/1000 = 1.2 in 7 days, so the exponential function can be written ...

i(t) = 1000(1.2^(t/7))

After 12 days, the number infected is modeled as ...

i(12) = 1000(1.2^(12/7)) ≈ 1367

About 1367 people are infected 12 days after discovery.

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You are able to express numbers in like halves

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2 years ago

Use the factorization to find the values of x for which p(x) = 0. (x – 1)(x 1)(x 5) = 0 x – 1 = 0, so x = x 1 = 0, so x = x 5 =

Sladkaya [172]

Answer: (x – 1)(x + 1)(x + 5) = 0

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x + 1 = 0, so x = -1

x + 5 = 0, so x = -5

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1 year ago

At a carnival, you spin a spinner that has four equal-sized sections, each a different color: green, yellow, red, and blue. If y

Alex_Xolod [135]

Answer:

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3 years ago

What is the difference of the fractions? Use the number line and equivalent fractions to help find the answer.

Dmitry_Shevchenko [17]

9514 1404 393

Answer:

Step-by-step explanation:

Subtracting a positive number moves you to the left on the number line. Subtracting a negative number moves you in the opposite direction, to the right.

Here, we start at -2 1/2 = -5/2, and we move 1 3/4 = 7/4 to the right from there. Each mark on this number line is 1/4 unit, so we move 7 marks. The results is ...

-2 1/2 -(-1 3/4) = -5/2 +7/4

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5 0

2 years ago

I need help and NOW PLEASE

mixas84 [53]

Answer:

a) 7/4 b) 15/2

Step-by-step explanation:

a) Scale Factor = Image / Object

Take the side of Triangle ABC that's BC Why? Because it corresponds with the Image Triangle ADE's DE

= 21/12 = 7/4

b) 7/4 = 10+ x / 10

Cross Multiply

= 4 ( 10 + x ) = 70

= 40 + 4x = 70

= 4x = 70-40

= 4x = 30

= 4x/4 = 30/4

x = 15/2

3 0

2 years ago