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3 years ago

What is the slop in the graph?

Mathematics

2 answers:

likoan [24]3 years ago

7 0

Answer:

-2/5

Step-by-step explanation:

rise/run you count how much it rises and how much it runs

Juliette [100K]3 years ago

5 0

Answer:

-2/5

Step-by-step explanation:

rise over run

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6k ÷ 7 = -3 Solve for k

fomenos

Answer:

k = -3.5

Step-by-step explanation:

6k ÷ 7 = -3

Multiply 7 to both sides

6k = -21

Divide both sides by 6

6k/6 = -21/6

k = -3.5

To check if the answer is correct or not, you can always plug in -3.5 for k in the equation.

6(-3.5) ÷ 7 = -3

-21 ÷ 7 = -3

-3 = -3

-3 equals -3 so it is correct that k = -3.5

4 0

3 years ago

Does anyone know how to solve this

Fofino [41]

Here is the answer the app is called cymath btw

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3 years ago

Convert: 76.8°f = ________ °c a. 21.5 b. 25 c. 170.24 d. 24.89

lesya [120]

The answer to convert 76.8 fahrenheit to Celsius is D

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3 years ago

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One-third of 2c subtracted frome 5 times nine

lilavasa [31]

-44.8 is the answer.

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3 years ago

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Use the exponential decay model, Upper A equals Upper A 0 e Superscript kt, to solve the following. The half-life of a certai

Akimi4 [234]

Answer:

It will take 7 years ( approx )

Step-by-step explanation:

Given equation that shows the amount of the substance after t years,

$A=A_0 e^{kt}$

Where,

$A_0$ = Initial amount of the substance,

If the half life of the substance is 19 years,

Then if t = 19, amount of the substance = $\frac{A_0}{2}$ ,

i.e.

$\frac{A_0}{2}=A_0 e^{19k}$

$\frac{1}{2} = e^{19k}$

$0.5 = e^{19k}$

Taking ln both sides,

$\ln(0.5) = \ln(e^{19k})$

$\ln(0.5) = 19k$

$\implies k = \frac{\ln(0.5)}{19}\approx -0.03648$

Now, if the substance to decay to 78% of its original amount,

Then $A=78\% \text{ of }A_0 =\frac{78A_0}{100}=0.78 A_0$

$0.78 A_0=A_0 e^{-0.03648t}$

$0.78 = e^{-0.03648t}$

Again taking ln both sides,

$\ln(0.78) = -0.03648t$

$-0.24846=-0.03648t$

$\implies t = \frac{0.24846}{0.03648}=6.81085\approx 7$

Hence, approximately the substance would be 78% of its initial value after 7 years.

5 0

3 years ago