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Dahasolnce [82]
3 years ago
10

How many square feet of carpet will we need for this hole??

Mathematics
1 answer:
vaieri [72.5K]3 years ago
6 0
Bottom = 2x5 = 10ft
Middle = 2x6 ( 4+2) = 12
Top 4x2= 8
10ft+12ft+8ft= 30ft squared
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Determine the equation of quadratic function represented by the table of value below.
Svetllana [295]

Answer:

A

Step-by-step explanation:

The general rule for the quadratic function is

y=ax^2+bx+c

Use the data from the table:

y(0)=6\Rightarrow 6=a\cdot 0^2+b\cdot 0+c\\ \\y(1)=4\Rightarrow 4=a\cdot 1^2+b\cdot 1+c\\ \\y(-1)=10\Rightarrow 10=a\cdot (-1)^2+b\cdot (-1)+c

We get the system of three equations:

\left\{\begin{array}{l}c=6\\ \\a+b+c=4\\ \\a-b+c=10\end{array}\right.

From the first equation

c=6, then

\left\{\begin{array}{l}a+b=-2\\ \\a-b=4\end{array}\right.

Add these two equations:

a+b+a-b=-2+4\\ \\2a=2\\ \\a=1

So,

b=-2-a=-2-1=-3

The quadratic function is

y=1\cdot x^2-3x+6\\ \\y=x^2-3x+6

6 0
3 years ago
A rectangle is formed by 2 congruent right triangles. The area of each triangle is 6 in^2. If each side of the rectangle is a wh
abruzzese [7]

How sad.  You were going along so nicely there, with a fascinating problem
that would be fun to work on, and then you suddenly fell off over the edge.

"Which of these ..." always means "Here's a list of choices.  Pick out the
correct answer from the list."  So we know that there was a list of choices
right there, where you copied the question from.  But when you finished
copying the question and reached the list of choices, you stopped there,
never copied the list, and went away to do something else instead.

Without that list, there's no way for us to answer the question "Which of these...".


7 0
3 years ago
Tom has 60 apples, 30 oranges and 10 bananas
disa [49]

Answer:

15 10 5

60+45=15

30-20=10

10-5=5

170

60+30+10+45+20+5=170

340

170x2=340

Step-by-step explanation:

6 0
3 years ago
bank a charges a monthly service fee of $5.00 and per check fee of $0.15 while bank b charges a monthly service fee of $2.50 and
ahrayia [7]
Bank A

f-final cost
c-number of cheques

f = 5 + 0.15c \\  \\ f = 5 + 0.15(13) \\ f = 5 + 1.95 \\ f = 6.95
Bank B

f = 2.5 + 0.35c \\ f = 2.5 + 0.35(13) \\ f = 2.5 + 4.55 \\ f = 7.05
At the thirteenth cheque, bank a is cheaper than bank b


a-red
b-blue

8 0
2 years ago
Read 2 more answers
What is the length of RS
dimulka [17.4K]
It is 32. It matches with side LM and so it's equal to 32
7 0
2 years ago
Read 2 more answers
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