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3 years ago

What is the scale factor

Mathematics

1 answer:

SSSSS [86.1K]3 years ago

7 0

Answer:

A scale factor is a number which scales, or multiplies, some quantity. In the equation y = Cx, C is the scale factor for x. C is also the coefficient of x, and may be called the constant of proportionality of y to x.

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How many half-lives of radon-222 have passed in 11.46 days? If 5.2 × 10−8 g of radon-222 remain in a sealed box after 11.46 days

Svetach [21]

Answer:

(i) Approximately 3 half lifes

(ii) $4.21\times 10^{-7}\text{ g}$

Step-by-step explanation:

(i) ∵ The half life of Radon-222 is approximately 3.8 days,

So, the number of half life in 11.46 days = $\frac{11.46}{3.8}$ ≈ 3

(ii) Since, the half life formula is,

$N=N_0 (\frac{1}{2})^{\frac{t}{t_{\frac{1}{2}}}}$

Where,

$N_0$ = initial quantity,

t = number of periods

$t_{\frac{1}{2}}$ = half life of the quantity,

Given,

N = $5.2\times 10^{-8}\text{ g}$

t = 11.46 days,

$t_{\frac{1}{2}} = 3.8\text{ days}$

$\implies 5.2\times 10^{-8}=N_0 (\frac{1}{2})^\frac{11.46}{3.8}$

$\implies N_0=2^{\frac{11.46}{3.8}}\times 5.2\times 10^{-8}\approx 4.21\times 10^{-7}\text{ g}$

7 0

4 years ago

Alan estimated that he would score 140 points the next time he bowled. He actually scored 152 points.

Nadya [2.5K]

The anwer is b because you can multiply or subraction from it

4 0

3 years ago

Fatima has 3 gallon of milk. She

tatiyna

Answer:

1/2 of a gallon

Step-by-step explanation:

3 divided by 6 is 1/2

6 0

3 years ago

Read 2 more answers

For a school fundraiser, Mai will make school spirit bracelets. She will order bead wiring and alphabet beads to create the scho

Ket [755]

Answer: Total number of bracelet: 235

Step-by-step explanation:

Given:

Total budget= $1,500

Spend on wire = $250

Per braclet beads = $5.30

Find:

Total number of bracelet

Computation:

Total number of bracelet = [1,500 - 250]

Total number of bracelet = [1,250/ 5.30

Total number of bracelet = 235.849

Total number of bracelet = 235 [By round minium]

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3 years ago

paul asked to order snacks for an office meeting of 180 people. she decides to order desert squares which come in boxes of 24. s

alekssr [168]

Answer:

27 boxses

Step-by-step explanation:

calculations is shown in the picture

7 0

2 years ago