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3 years ago

7

Proportion is ________________

1 answer:

Elis [28]3 years ago

5 0

A part, share, or number in relative comparison to the whole. To be proportional means they are equal parts of the whole. In math, it would mean the same thing. A proportion is the named given to a statement where two ratios are equal.

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a 29 gram sample of a substance that's used to preserve fruits and vegetables has a k-value of 0.1359. Find the substance's half

kaheart [24]

Okay well
a(t)= amount of substance remaining after t days
assuming exponential decay, a(t)=29e^-0.1359t

now, find the half, set a(t)= half the original and solve for t

14.5=29e^-0.1359t
0.5=e^-0.1359t
In(0.5)=In(e^-0.1359t)
In(0.5)=-o.1359t

t=in(0.5)/(-0.1359)= (aprox) 5.1 days

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3 years ago

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The formula K = C + 273 shows how to estimate the temperature K measured in degrees Kelvin (°K) when you know the temperature C

Sergio [31]

Answer:

22 C

Step-by-step explanation:

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4 years ago

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(5•10^-2) x (2•10^3)

Andre45 [30]

Answer:

100

Step-by-step explanation:

5•10^-2= 5•1/100 an d that's equal to 1/20 if you divide it with (2•10^3)wich is equal too 2000

you will get 100 as a result

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3 years ago

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Sarah opens a small bag of chocolate candies and notices that out of 210 candies, 63 are brown. She assumes the color breakdown

mezya [45]

Answer:

1440

Step-by-step explanation:

We can solve this problem by applying the rule of three.

In fact, we know that:

- Over a package of 210 candies,

- The number of brown candies is 63

- Here we want to find what is the number of brown candies when the total number of candies contained in the package is 4800

So we can set up the following rule of three:

$\frac{x}{4800}=\frac{63}{210}$

where

x = number of brown candies when the total number of candies contained in the package is 4800

Solving the expression for x, we find:

$x=\frac{63}{210}\cdot 4800 =1440$

So, Sarah can expect to find 1440 brown candies in a package of 4800 pieces.

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4 years ago

25° 35° to 205° circle

Lisa [10]

Answer:

x = 60

Step-by-step explanation:

the chord- chord angle x is half the sum of the measures of the arcs intercepted by the angle and its vertical angle.

The sum of the arcs in a circle = 360° , then

intercepted arc = 360° - (35 + 25 + 205)° = 360° - 265° = 95°

then

x = $\frac{1}{2}$ (95 + 25 ) = $\frac{1}{2}$ × 120 = 60

3 0

2 years ago