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4 years ago

Please answer these simultaneous equations ASAP. Thank you (lots of points only for full answers)

Mathematics

2 answers:

balandron [24]4 years ago

8 0

Answer:try to answer the rest on your own and if it is not clear, let me know

Step-by-step explanation:

zhannawk [14.2K]4 years ago

7 0

Step-by-step explanation:

for number 4:

2x + 5y = -10

2x - y = 8

subtract it

6y = -18

y = 6/-18

y = -0.3

now go back to the first equation

2x + 5 x -0.3 = -10

2x -1.5 = -10

2x = -8.5

-4.25

x = -4.25, y = -0.3

hope this help

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2 years ago

Moby sold half his toy car collection, and then bought 12 more cars the next day. He now has 48 toy cars. How many cars did he h

castortr0y [4]

Answer: 72 cars.

Step-by-step explanation:

Let be "x" the number of toys that Moby had to start with.

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Now you must solve for "x" in order to find its value.

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4 years ago

Patrick compared the slope of the function g(x) = -2x - 8 to the slope of the linear function shown in the table below. Let m =

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4 years ago

Fifteen 7th graders were asked how many hours they spend doing homework each week and how many hours they spend watching televis

timama [110]

Answer:

18 > 14, true

12 - 16 = -4, true

Mean:

Homework = (4 + 6*2+10*3+12*2+14*4+16*2+18)/15 = 11.73
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True

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3 years ago