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Andreyy89
3 years ago
15

This algebra I need help with all of them

Mathematics
1 answer:
charle [14.2K]3 years ago
4 0

Answer:

17-18) Can you type out the questions for 17-19, I can't read them.

20) a. rational

21) d. 25 in^2

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X+2y=12 <br> 3x-10y = 0<br><br> y=?<br> x=?
sergeinik [125]
~~x+2y=12  \\  ~~3x-10y=0 \\&#10;~------ \\~ -3/x+2y=12 \\  ~~~~~~3x-10y=0 \\ ------- \\ -3x-6y=-36 \\ ~~~~3x-10y=0 \\ +------- \\ ~~~~-16y=-36 \\ \\  ~~~~y= \frac{36}{16}\rightarrow \boxed{\frac{9}{4}} \\  \\
x+2. \frac{9}{4}  =12 \\  \\ x+ \frac{18}{4} =12 \\  \\  \frac{4x+18}{4} =12 \\  \\ 4x+18=48 \\ 4x=30 \\  \\ x=\boxed{\frac{15}{2}}
3 0
3 years ago
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the length of a rectangle is 5 more than twice its width. its perimeter is 88 feet. find its dimensions
podryga [215]
Length = x; width = y
2x+2y=88
x=2y+5
4y+10+2y=88
6y=78
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3 0
3 years ago
If ΔΡQR
frozen [14]

Answer:

If y varies directly as x^3 and y=36 when x=7, find y if x=4? (Round answer to the nearest hundredth) , find y if x=4 x = 4 . (Round off your answer to the nearest hundredth.)

Step-by-step explanation:

6 0
3 years ago
Convert 13000 milligrams into pounds. Round your answer to the nearest<br> hundredth.
WINSTONCH [101]

Answer: 0.03

Step-by-step explanation:

6 0
3 years ago
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The table shows the estimated number of lines of code written by computer programmers per hour when x people are working.
PilotLPTM [1.2K]

Answer:

Hence, the model that best represents the data is:

y=26.9x-1.3

Step-by-step explanation:

We are given a table that  shows the estimated number of lines of code written by computer programmers per hour when x people are working.

We are asked to find which model best represents the data?

So for finding this we will put the value of x in each of the functions and check which hold true that which gives the value of y i.e. f(x) as is given in the table:

We are given 4 functions as:

A)

y = 47(1.191)^x

B)

y=34\times (1.204)^x

C)

y=26.9x-1.3

D)

y=27x-4

We make the table of these values at different values of x.

x                  A                 B                C               D

2              66.66          49.3            52.5           50

4             94.57            71.44           106.3         104  

6             134.14           103.57         160.1          158

8             190.27          150.14          213.9         212

10           269.91           217.64         267.7         266

12           382.85          315.5           321.5          320.

Hence, the function that best represents the data is:

Option C.

y=26.9x-1.3

6 0
3 years ago
Read 2 more answers
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