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zimovet [89]
3 years ago
11

Solve the systems of equation using substitution:y y= -3x 4x + y = 2

Mathematics
2 answers:
Vlada [557]3 years ago
4 0
Put the first equation into the second

4x -3x = 3

x = 3

plug in 3

-3(3) = -9

y = -9
AlladinOne [14]3 years ago
4 0
The answer is x=2you can check it by Friday Turing the answer into the original problem

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Write the equation of a line that passes through the points ( 2 , - 5 ) and ( 8 , - 2 ).
Zielflug [23.3K]

Answer:

y = 1/2x - 6

Step-by-step explanation:

y2 - y1 / x2 - x1

-2 - (-5) / 8 - 2

3 / 6

= 1/2

y = 1/2x + b

-5 = 1/2(2) + b

-5 = 1 + b

-6 = b

3 0
3 years ago
At the beginning of an experiment, the number of bacteria in a colony was counted at time t=O. The number of bacteria in the col
yan [13]

Answer:

1092

Step-by-step explanation:

We have been given that the number of bacteria in the colony t minutes after the initial count modeled by the function B(t)=9(3)^t. We are asked to find the average rate of change in the number of bacteria over the first 6 minutes of the experiment.

We will use average rate of change formula to solve our given problem.

\text{Average rate of change}=\frac{f(b)-f(a)}{b-a}

Upon substituting our given values, we will get:

\text{Average rate of change}=\frac{b(6)-b(0)}{6-0}

\text{Average rate of change}=\frac{9(3)^6-9(3)^0}{6}

\text{Average rate of change}=\frac{9(729)-9(1)}{6}

\text{Average rate of change}=\frac{6561-9}{6}

\text{Average rate of change}=\frac{6552}{6}

\text{Average rate of change}=1092

Therefore, the average rate of change in the number of bacteria is 1092 bacteria per minute.

8 0
3 years ago
Round 66,681 to the nearest ten thousand
kolezko [41]

Answer:

70,000

Step-by-step explanation:

66,681 is closest to 70,000 rather than 60,000.

6 0
3 years ago
Read 2 more answers
What is <br>1/3 + 3/9<br><br>1/3 + 3/9=?
atroni [7]

Answer:2/3

Step-by-step explanation:

3/9=1/3

1/3+1/3=2/3

4 0
3 years ago
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PLEASE ANSWER ASAP! YOUR ANSWER MUST INCLUDE AN EXPLANATION ON ORDER TO RECEIVE POINTS AND THE BRAINLIEST ANSWER! THANKS!!!
Julli [10]
V=A*h*1/3 - equation to count volume of the pyramid
A=93.5 sq ft
h=6 ft
V=93.5*6*1/3=93.5*2=187 cubic ft
8 0
3 years ago
Read 2 more answers
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