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Fofino [41]
3 years ago
8

Can I get some help we just started this today?

Mathematics
1 answer:
Ivenika [448]3 years ago
5 0
Your answer is correct.

Also, the line rises 3 units up for every 1 unit it moves to the right, that means the rise/run (rise over run) is 3/1 which is equal 3 which means the slope must be equal to 3.

Inputting the equation 3x+4 into desmos creates an identically graph with the same y-intercept and x-intercept.
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A sample of a radioactive substance decayed to 97% of its original amount after a year. (Round your answers to two decimal place
Alborosie

Answer:

23 years

Step-by-step explanation:

Step 1: Calculate the rate constant (k) for the radioactive decay

A radioactive substance with initial concentration [A]₀ decays to 97% of its initial amount, that is, [A] = 0.97 [A]₀, after t = 1 year. Considering first-order kinetics, we can calculate the rate constant using the following expression.

ln [A]/[A]₀  = - k.t

k = ln [A]/[A]₀ / -t

k = ln 0.97 [A]₀/[A]₀ / -1 year

k = 0.03 year⁻¹

Step 2: Calculate the half-life of the substance

We will use the following expression.

t_{1/2} = ln2/ k = ln 2 / 0.03 year⁻¹ = 23 years

4 0
3 years ago
Factor the coefficient out of 1/5x -3/5
zysi [14]

Answer:

1/5 (x-3)

Step-by-step explanation:

1/5x -3/5

1/5 (x-3)

6 0
3 years ago
Tom buys a new phone service. It costs $20 to install, and then costs $15 a month. Write an equation to show the cost of the pho
RoseWind [281]

Answer:

Y=$15x+$20

Step-by-step explanation:

4 0
3 years ago
The formula below is used to convert a temperature in degrees Celsius, C to a temperature in degrees Fahrenheit, F
Nikolay [14]
Fahrenheit and Celcius are unit that can be used to measure temperature. In this question, you are given the equation to calculate Fahrenheit from Celcius so you just need to put the Celcius into C variable.

F = 1.8C + 32
F= 1.8(15)+32
F= 59
5 0
2 years ago
Read 2 more answers
Refer to the figure to complete the proportion A/C = Y/?
salantis [7]
Hello,
Please, see the attached file.
Thanks.

3 0
3 years ago
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