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omeli [17]
1 year ago
8

four friends went shopping for school supplies the table shows the number of school supplies each Brown bought and the total cos

t complete the table to show the average cost of the school supplies each friend bought

Mathematics
1 answer:
allsm [11]1 year ago
5 0

Average cost = Total cost / Number of supplies

\begin{gathered} \mu=\frac{T}{n} \\ \text{For Rosa} \\ \mu=\frac{29.91}{3}=9.97 \\ \text{For }Ellis \\ \mu=\frac{31.44}{4}=7.86 \\ \text{For }Andie \\ \mu=\frac{45.04}{4}=11.26 \\ \text{For }Keondre \\ =\frac{54.85}{5}=10.97 \end{gathered}

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Determine the discriminant for the given equation x^2+4x+5=0. Then describe the roots(how many and what type).
Fed [463]

Discriminant = b^2 - 4ac, where a, b and c come from the form of the quadratic equation as ax^2 + bx + c

Discriminant = (4)^2 - 4(1)(5)
= 16 - 20
= -4

-4 < 0, therefor there are no roots

(If the discriminant = 0, then there is one root
If the discriminant > 0, there are two roots, and if it is a perfect square (eg. 4, 9, 16, etc.) then there are two rational roots
If the discriminant < 0, there are no roots)
3 0
3 years ago
Evaluate the expression 9-3÷1/3+1 <br>A. 9 <br>B. 3 <br>C. 1 <br>D. 19​
ikadub [295]
PEMDAS
P- none
E- none
M- none
D- (3/1/3=1)
AS- 9-1+1=9

The answer is A.
7 0
2 years ago
State whether the given equation or function is linear. Write yes or no. Explain your reasoning. f(x) = 7x2 + 4
vagabundo [1.1K]

For this case we have the following function:

f (x) = 7x ^ 2 + 4

By definition, we have that a linear equation is of the form y = mx + b

On the other hand, a quadratic equation is of the formy = ax ^ 2 + bx + c

Then, the given equation is not a linear equation, it is not of the form y = mx + b

Answer:

No, the equation is not linear. It is not of the form f (x) = mx + b.

4 0
3 years ago
Read 2 more answers
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scoray [572]
Answer: 9/14

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7 and 2 can both go into 14
Whatever number you use to multiply to equal 14, you do the same to the top.
It would look like this.

2/14 + 7/14
Then you add.

2/14 + 7/14= 9/14
You can’t simplify this fraction so this is your answer. Hope this helped!
7 0
3 years ago
Suppose that W and X are points on the number line. If WX=9 and W lies at 12, where would X be located? If there is more than on
Reika [66]
X = 3/4
Because WX=9 and W=12
12X=9
X=9/12 or 3/4
8 0
3 years ago
Read 2 more answers
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