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Alecsey [184]
3 years ago
10

How do you solve systems of equations using elimination ?

Mathematics
1 answer:
Damm [24]3 years ago
8 0
<span>you have to create variables that have the same coefficient</span>
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What is he answer to this I rlly need help
Thepotemich [5.8K]
So the right answer is B 942 ft^2

3 0
3 years ago
Read 2 more answers
20x-3y = 4 and 3x -y = -5
myrzilka [38]

Answer:

Step-by-step explanation:

3x-y=-5

y=3x+5

20x-3(3x+5)=4

20x-9x-15=4

11x=19

x=\frac{19}{11}

y=3(\frac{19}{11})+5

y=\frac{112}{11}

4 0
3 years ago
34, 48, 52, 61, 76, 76, 61, 84, 61, 39, 83, 61, 79, 81, 56, and 88 the mean
Nina [5.8K]

The mean of the set of data is <u>65</u>.

<em><u>Given the following </u></em><em><u>data set:</u></em><em><u> </u></em>

34, 48, 52, 61, 76, 76, 61, 84, 61, 39, 83, 61, 79, 81, 56, and 88

<em><u>Recall</u></em>:

  • The mean of any set of data is the average of all the data values in the given data set.

  • It is calculated by summing all the data values in the data set divided by the number of data values in the data set

<em>Let's solve for the </em><em>mean</em>:

  • Mean = sum of all data set / number of data set

<em>Thus</em>:

  • sum of all data set = 34+48+ 52+ 61+76+76+ 61+84+61+39+ 83+ 61+ 79+81+ 56+  88 = 1040

  • Number of data set = 16

  • \mathbf{Mean = \frac{1040}{16} = 65}

Therefore, the mean of the data set given is 65.

Learn more here:

brainly.com/question/20118982

7 0
3 years ago
Carrie has 4 pans of brownies. If she wants to divide each pan into
aniked [119]

Answer:

40

Step-by-step explanation:

4 times 10 equals 40

i news more sownfjdhe

8 0
3 years ago
55% of what number is 77?
Montano1993 [528]
Percent means parts out of 100
55%=55/100=0.55

'of' means multiply

'is' means =

55% of what is 77
0.55 times what=77
divide both sides by 0.55
what=140

the number is 140
8 0
3 years ago
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