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kozerog [31]
2 years ago
6

Find the percent of change for the following:

Mathematics
2 answers:
maw [93]2 years ago
7 0
1.3% increase
2.6% decrease
3.18 increase
Hope this helps
Inessa05 [86]2 years ago
4 0

Answer:

Step-by-step explanation:

3% increase

6% decrease

18% increase

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What is the solution to the system below? <br> y = -3x - 2<br> 6x + 2y = -4
Alja [10]

Answer:

Infinitely many solutions

Step-by-step explanation:

Since y=-3x-2, plug it in (2)

6x+2(-3x-2)=-4.

Distribute:

6x-6x-4=-4

-4=-4

Infinetly many solutions.

Hope this helps :)

4 0
3 years ago
The temperature of a cup of coffee varies according to Newton's Law of Cooling: dT dt equals negative k times the quantity T min
Maslowich

Answer:

67.3°C

Step-by-step explanation:

A = 25, T(0) = 100, T(1) = 90, find T(4)

dT/dt = -k(T - A)

d(T - A)/dt = -k(T - A)

d(T - A)/(T - A) = -k dt

ln(T - A) = lnC - kt

T(t) -A=Ce^{-kt}\\T(t) = A + Ce^{-kt} = 25 + Ce^{-kt}\\T(0) = 25 + C = 100\\C=75

T(t) = 25 + 75e^{-kt}\\T(1) = 25 + 75e^{-k} = 90\\75e^{-k} = 65\\e^{-k} = \frac{65}{75}, k = ln\frac{75}{65} = 0.1431\\T(t) = 25+75e^{-0.1431t}\\T(4) = 25+75e^{-0.1431\times4} = 67.3

4 0
2 years ago
Declmal answers
pogonyaev

Answer:

We can break this down:

The student has a one out of five chance of getting a correct answer, and a four out of five chance of an incorrect answer. We can express the students odds of getting one incorrect answer as 4/5. In order to get the odds of two wrong answers, we need to multiply this answer again by the odds of choosing a wrong answer. Therefore:

The odds of one wrong answer = 4/5

The odds of two wrong answers = (4/5) * (4/5) = 16/25 chance of getting both of the questions wrong.

Step-by-step explanation:

3 0
3 years ago
Can someone please help me with this question
ZanzabumX [31]

Answer: ask a parent or just google it

Step-by-step explanation:

8 0
3 years ago
Definition: This type of factory and mill was common in the American South at the start of the 20th
LUCKY_DIMON [66]

Answer:

Textile

Step-by-step explanation:

5 0
3 years ago
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