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uranmaximum [27]
3 years ago
12

Find(4) when f(x)=4x^2-3x+3

Mathematics
1 answer:
zimovet [89]3 years ago
3 0
Assuming x = 4, replace each x in the equation with 4:

4(4)^{2} - 3(4) + 3

Solve each term in parentheses:

4(4)^{2}
4^{2} = 16
4 \times 16 = 64

-3(4)
-3 \times 4 = -12

Your equation should now look like this:

64 - 12 + 3 = 55

f(4) will equal 55.
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How would I solve the equations: y = x-4 and y=x^2-4x using substitution
andriy [413]

Answer:

x = 6

Explanation:

y = x - 4

26 = 4x + y


If y = y, then we can rewrite this system as this: 4x + x - 4 = 26


Then we combine like terms and add 4  on both sides to give us  5  x  =  30 . Divide by 5 on both sides and we arrive at the solution: x = 6

6 0
3 years ago
The box-and-whisker plot below shows the numbers of text messages received in one day by students in the seventh and eighth grad
Leya [2.2K]
<h3><u>Answer with explanation:</u></h3>

From the box and whisker plot of seventh grade we have:

The minimum value =6

First quartile or lower quartile i.e. Q_1 = 14

Median or second quartile i.e. Q_2 = 18

Third quartile or upper quartile i.e. Q_3 =22

and maximum value = 26

From the box and whisker plot of eighth grade we have:

The minimum value =22

First quartile or lower quartile i.e. Q_1 = 26

Median or second quartile i.e. Q_2 = 30

Third quartile or upper quartile i.e. Q_3 = 34

and maximum value = 38

a)

The overlap of the two sets of data is as follows.

  • The upper quartile or third quartile of seventh grade is same as the minimum value of the data of eighth grade.
  • And the maximum value of seventh grade is same as the lower quartile of eighth grade.

b)

IQR is calculated as the difference of the Upper quartile and the lower quartile

i.e. Q_3-Q_1

so, IQR of seventh grade is:

22-14=8

IQR of seventh grade=8

IQR of eighth grade is:

34-26=8

Hence, IQR of eighth grade=8

c)

The difference of the median of the two data sets is:

30-18=12

Hence, the difference of median is: 12

d)

As the IQR of both the sets is same i.e. 8.

Hence, the number that must be multiplied by IQR so that it is equal to the difference between the medians of the two sets is:

8\times n=12\\\\n=\dfrac{12}{8}\\\\n=\dfrac{3}{2}\\\\n=1.5

Hence, the number is : 1.5

6 0
3 years ago
What is 899.16 divid150?
VashaNatasha [74]
The answer is 5.9944
3 0
3 years ago
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A new bank customer with $3,000 wants to open a money market account. The bank is offering a
timama [110]

Answer:

SI=P*T*R/100

=3000*1.4*30/100

=$1260

Account balance=3000+1260

=$4260

3 0
2 years ago
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3 boys shared a whole pizza. Andrew ate 25% of the pizza. alonso ate 5/8 of the pizza. Tyler ate .1255 of the pizza. who are the
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Answer:

Alonso ate the most

Step-by-step explanation:

mark braniest pls

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