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Alona [7]
2 years ago
15

2x+3y=9 x+5y=8 solving systems using elimination solve and show your work thank you

Mathematics
1 answer:
Vsevolod [243]2 years ago
3 0
X+2y=1 well yoiu have ti take away the xs and the  your have to do the same tjimng ti the ys 
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the wall is 20ft deep, the snail goes up 4ft every day and drops 2 ft every night. how many days does it take the snail to reach
goldfiish [28.3K]

It takes the snail 10 days to reach 20 ft because if it loses 2 ft of the 4ft it climbs every day you can just calculate 20/2 and get 10 instead of 20/(4-2)

4 0
2 years ago
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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. Day Sunday Monday Tuesd
adell [148]

Answer:

4\dfrac{2}{7}

Step-by-step explanation:

How to calculate the mean absolute deviation:

<u>Step 1:</u> Calculate the mean.

\text{Mean}=\dfrac{49+55+52+46+47+42+38}{7}=47

<u>Step 2:</u> Calculate how far away each data point is from the mean using positive distances. These are called absolute deviations.

\begin{array}{ccccccc}\text{Sun}&\text{Mon}&\text{Tue}&\text{Wed}&\text{Thu}&\text{Fri}&\text{Sat}\\49&55&52&46&47&42&38\\2&8&5&1&0&5&9\end{array}

<u>Step 3:</u> Add those deviations together.

\sum|\text{mean}-x_i|=2+8+4+1+0+5+9=30

<u>Step 4:</u> Divide the sum by the number of data points.

\text{MAD}=\dfrac{\sum|\text{mean}-x_i|}{n}=\dfrac{30}{7}=4\dfrac{2}{7}

8 0
2 years ago
Suppose you want to know the exact number of the people who voted for candidate. Would you rather look at the bar graph or at fr
IgorC [24]
I would rather look at a frequency table because the exact numbers would be shown and it could tell you by how much and how frequently they’re increasing . A bar graph could do the same , but sometimes they could be grouped so it wouldn’t tell you the exact number .
4 0
3 years ago
Maritza remembers her pin because it is the product of consecutive prime numbers that is between 1000 and 1500. What is her pin
faltersainse [42]
Well, i am not sure if i am right, but i tried.

The prime numbers have to be consecutive, (meaning in order from least to greatest), so you find 2 prime numbers on a list, and the only two are 31 and 37 so multiply those and you should get 1147
8 0
3 years ago
What is the mean for this list of numbers? 17, 19, 21, 23
Svetlanka [38]

Answer:

The mean is 20

Step-by-step explanation:

17+19+21+23=80

80 div 4 = 20

7 0
3 years ago
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