2 years ago

Please help brainlist. <3

1 answer:

4 0

Answer:The graph line has to go through the origin in order for it to be proportional .In a proportional relationship, one variable is always a constant value. Only have 2

Step-by-step explanation:

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The half price of helium-5 is 7.6 X 10 to the power of negative 22 seconds and the half-life helium -9 is 7 x 10 to the power of

Digiron [165]

Answer:

Approximately 9.211 times

Step-by-step explanation:

Given

$x = 7.6 * 10^{-22}s$ --- half life of helium-5

$y = 7 * 10^{-21}s$ --- half life of helium-9

Required

How many times greater is y than x

To do this, we simply divide y by x

$\frac{y}{x} = \frac{7 * 10^{-21}s}{7.6 * 10^{-22}s}$

$\frac{y}{x} = \frac{7 * 10^{-21}}{7.6 * 10^{-22}}$

Apply law of indices

$\frac{y}{x} = \frac{7 * 10^{-21--22}}{7.6}$

$\frac{y}{x} = \frac{7 * 10^{-21+22}}{7.6}$

$\frac{y}{x} = \frac{7 * 10}{7.6}$

$\frac{y}{x} = \frac{70}{7.6}$

$\frac{y}{x} = 9.211$

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Ayesha bought a 24-pack of lip gloss for $17.04. What is the unit cost per tube of lip gloss?

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The area of a parallelogram is 125 square inches and the height of the parallelogram is 10 inches. What is the lenght of the bas

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Which numbers are to the right of 0 on the number line?

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Positive Numbers are to the right of the number line.

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2 years ago

Which pair of expressions are equivalent?

Zielflug [23.3K]

Answer:

second one

Step-by-step explanation:

Because when you try to remove the brackets then you should multiply coefficient of x and coefficient of y by 2

So it will be 2x+18y

2*9=18

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2 years ago