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2 years ago

I need help ASAP. Offering 30 points

Mathematics

1 answer:

Vaselesa [24]2 years ago

6 0

Answer:

I'm sorry but the picture is upside down so I cant read it.

Sorry!

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Tyler used 17.04 gallons of gas.Maria used 6.2 times as many gallons of gas as Tyler. How many gallons of gas did Maria use?

timurjin [86]

105.648 gallons is your answer

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3 years ago

Element X is a radioactive isotope such that its mass decreases by 26% every day. If an experiment starts out with 810 grams of

ioda

Answer:

The hourly decay rate is of 1.25%, so the hourly rate of change is of -1.25%.

The function to represent the mass of the sample after t days is $A(t) = 810(0.74)^t$

Step-by-step explanation:

Exponential equation of decay:

The exponential equation for the amount of a substance is given by:

$A(t) = A(0)(1-r)^t$

In which A(0) is the initial amount and r is the decay rate, as a decimal.

Hourly rate of change:

Decreases 26% by day. A day has 24 hours. This means that $A(24) = (1-0.26)A(0) = 0.74A(0)$ ; We use this to find r.

$A(t) = A(0)(1-r)^t$

$0.74A(0) = A(0)(1-r)^{24}$

$(1-r)^{24} = 0.74$

$\sqrt[24]{(1-r)^{24}} = \sqrt[24]{0.74}$

$1 - r = (0.74)^{\frac{1}{24}}$

$1 - r = 0.9875$

$r = 1 - 0.9875 = 0.0125$

The hourly decay rate is of 1.25%, so the hourly rate of change is of -1.25%.

Starts out with 810 grams of Element X

This means that $A(0) = 810$

Element X is a radioactive isotope such that its mass decreases by 26% every day.

This means that we use, for this equation, r = 0.26.

The equation is:

$A(t) = A(0)(1-r)^t$

$A(t) = 810(1 - 0.26)^t$

$A(t) = 810(0.74)^t$

The function to represent the mass of the sample after t days is $A(t) = 810(0.74)^t$

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2 years ago

How do i expand (3x+5)^2

shepuryov [24]

I don't know how you expand it but the answer is 3x + 25 unless that's expanding.

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2 years ago

Read 2 more answers

Which of the fractional factors will result in a product that increases when multiplied by the fraction in the image?

Delicious77 [7]

the fraction in the image is 2 1/2

let's try each choice

1) 2/3 x 5/2 = 10/6 = 5/3

2) 5/4 x 5/2 = 25/8

3) 3/3 x 2 1/2 = 2 1/2

4) 4/5 x 5/2 = 20/10 = 2

who is giving you these questions?

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2 years ago

Which of the following is true about graphing polynomial functions?

igomit [66]

The answer is C, Ik this bc I already finished learning this

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3 years ago