3 years ago

Is y=x a proportional linear equation

Mathematics

1 answer:

Dmitry [639]3 years ago

7 0

Answer: yes.

Step-by-step explanation:

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You have 80 grams of a radioactive kind of vanadium. How much will be left after 48 days if it’s half-life is 16 days?

Tresset [83]

10 grams Vanadium will be left after 48 days

Further explanation:

Half-life is the time after which the chemical is reduced to half.

The reaming mass after half life is given by:

$mass\ fater\ half\ life=\frac{Original\ mass}{2}$

The formula for calculating the remaining mass after given time period is:

$Remaining\ substance=\frac{1}{2^n}*mass$

Here n is the number of half lives passed

Now,

Given

Mass=80 grams

Time= 48 days

Half-life = 16 days

The number of half lives will be:

$n=\frac{48}{16}=3$

Putting the values of n and mass in the formula

$Remaining\ substance=\frac{1}{2^3}*80\\=\frac{1}{8}*80\\=10\ grams$

10 grams Vanadium will be left after 48 days

Keywords: Half-life, radioactive

Learn more about half-life calculation at:

#LearnwithBrainly

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2 years ago

Simplify

4vir4ik [10]

D 9000 is the answer :)

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3 years ago

What is the rate of change of y with respect to x?

Vladimir79 [104]

The rate is 9(units of y) per (unit of x).

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2 years ago

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The length of a rectangle is 4 cm longer than its width. If the perimeter of the rectangle is 44 cm, find its area.

adell [148]

Length: w+4
Width:w
Perimeter:44
Area: L times w
P=44
44=2(w)+2(w+4)
44=2w+2w+8
44=4w+8
36=4w
w=9
L=w+4
L=9+4
L=13
Area should equal 117 cm squared

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3 years ago

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Leni [432]

Answer:

The midpoint of TS is (-1,-3)

The coordinates of M should be (8,18)

Step-by-step explanation:

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3 years ago