Help please . Thank you

Mathematics

1 answer:

MArishka [77]3 years ago

7 0

The general form is ax²+bx+c=0,
so at least we know b has to be 0. None of the values match unless we multiply everything by 4. That leads to answer B, a=1, b=0 and c=20

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2x-10/4=3x<br> −10<br> −1<br> 2<br> 11

evablogger [386]

Answer:

Step-by-step explanation:

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3 years ago

Based on a study of population projections for 2000 to 2050, the projected population of a group of people (in millions) can b

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Answer:

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Step-by-step explanation:

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(a) The average rate of change between 2000 and 2014 is determined by dividing the difference in the populations in the two years by the number of years. In the year 2000, $t=0$ and in 2014, $t=14$ . Mathematically,

$\text{Rate}=\dfrac{A(2014) - A(2000)}{2014-2000}=\dfrac{11.19(1.009)^14-11.19(1.009)^0} {14}$

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(b) The instantaneous rate of change is determined by finding the differential derivative at that year.

The result of differentiating functions of the firm $y=a^x$ (where $a$ is a constant) is $\dfrac{dy}{dx}=a^x\ln a$ . Let's use in this in finding the derivative of $A(t)$ .

$A\prime(t) = \dfrac{A}{t}=11.19\cdot1.009^t\ln1.009$

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$A\prime(14) =11.19\cdot1.009^14\ln1.009=0.114$

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3 years ago

In a lab, a substance was cooked by 42 C over a period of 7 hours at a constant rate. What was the change in temperature each ho

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