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Nadya [2.5K]
3 years ago
14

Use the elimination method to solve the system of equations. Choose the

Mathematics
1 answer:
miss Akunina [59]3 years ago
3 0

9514 1404 393

Answer:

  A.  (4, 12)

Step-by-step explanation:

Adding the second equation to twice the first will eliminate y.

  2(10x +2y) +(3x -4y) = 2(64) +(-36)

  23x = 92 . . . . . . . . simplify

  x = 4 . . . . . . . . . divide by 23

This value matches choice A: (4, 12).

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5. Write an equation for the linear<br> relationship shown below.
Neporo4naja [7]

Answer:

y=3×-11

Step-by-step explanation:

y=m+c

m=7-1÷6-4

m=6÷2

m=3

y=3+c

7=3(6)+c

7-18=c

-11=c

y=3×-11

6 0
2 years ago
Karen bought 203 stickers. Each sheet had 13 stickers.She gave away 809 stickers to her friends. How many stickers does Karen ha
andrew11 [14]

Answer:

1830 sickers, 140.8 sticker sheets left

Step-by-step explanation:

13*203 = 2639

2639-809=1830

3 0
3 years ago
Compare 3.6 to the square root of 12
Burka [1]
The square root of 12 is 3.4641 so 3.6 would be greater than 3.4641
3 0
3 years ago
Read 2 more answers
What is the minimum number of clients the travel agent should survey? Note that z=1.96 for a 95% confidence interval.
slega [8]

Answer:

121

Step-by-step explanation:

Given data as per the question

Standard deviation = \sigma = 840

Margin of error = E = 150

Confidence level = c = 95%

For 95% confidence, z = 1.96

based on the above information, the minimum number of clients surveyed by the travel agent is

n = (\frac{z\times \sigma}{E})^2

=  (\frac{1.96\times 840}{150})^2

= 120.47

= 121

hence, the 121 number of clients to be surveyed

Therefore we applied the above formula to determine the minimum number of clients

4 0
3 years ago
Ashton is saving money to buy a new bike . he needs $120 but has only saved 60$ so far . how much more money does he need to buy
hjlf
You need to do 120-60=60 and that means he only needs $60.
7 0
3 years ago
Read 2 more answers
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