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Veronika [31]
3 years ago
13

Help lol i need gthe answer to this everytime i do it i get it wrong

Mathematics
1 answer:
netineya [11]3 years ago
7 0

Answer:

B

Step-by-step explanation:

You need the equation to equal 0

4x²-5=3x+4 Subtract 4 and 3x from both sides

4x²-5-4-3x

4x²-3x-9

a=4    b=-3    c=-9

(-b±√(b²-4ac))/2a

(-(-3)±√-3²-4(4)(-9))   /   (2(4)

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Write a rule to describe a translation 5 units left and 10 units up.
madam [21]
To translate 5 units left, add 5 to every x to move up 10 units, add 10 to whole equaiotn example y=2x+2 move left 5 y=2(x+5)+2 move up 10 y=2(x+5)+2+10
3 0
3 years ago
PLS HELP ASAP!! WILL MARK BRAINLYIST
son4ous [18]

Answer:

$39,851.25

Step-by-step explanation:

If the sales increase at a rate of 9% per year, this means it will be 109% of the previous year's value since 100% + 9% = 109%

109% in decimal form = 109/100 = 1.09

Therefore, the exponential function is:

y = 20000 \cdot 1.09^x, where x is the number of years

So when x=8,  

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After 8 years, annual sales = $39,851.25

7 0
2 years ago
Question 13
ArbitrLikvidat [17]

Answer:

C

Step-by-step explanation:

Here in this question , we are interested in calculating the total distance covered by the train in the 10 minutes that it ran.

From the first part of the question, we already know the distances in the first 5 minutes.

Now, to calculate the total distance in the second 5 minutes, we use the distance formula since we have the average speed and the time;

Mathematically; Total distance = average speed * time

From the question, average speed is 33km/h, while time is 5 minutes. To achieve a consistent unit, we convert 5 minutes to hours.

That would be 5/60 = 1/12 hours

So the total distance in the second 5 minutes is;

33 * 1/12 = 2.75 km

Now, to calculate the total distance traveled, let’s add up the distances in the first 5 minutes and convert to kilometers;

That would be;

68 + 127 + 208 + 312 + 535 = 1,250 m

Let’s convert this to km.

We simply divide by 1000 = 1250/1000 = 1.25 km

The total distance is thus ;

1.25 + 2.75 = 4 km

4 0
3 years ago
2. Is the expression 2 • 4' equal to the expression 8"? Explain your answer.
liberstina [14]
Yes, this is because 2*4 equals 8
4 0
3 years ago
How do you find the difference of the lengths of two objects
DanielleElmas [232]

You can divide them or simply subtract depending on the objects. If more information was provided I could give you a better answer.

4 0
3 years ago
Read 2 more answers
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