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chubhunter [2.5K]
2 years ago
8

2.) Is (-1, 2) a solution to this system of equations? 1-x+2y = 3 12x - y - 4

Mathematics
1 answer:
gizmo_the_mogwai [7]2 years ago
3 0

Answer:

12x-y-4

Step-by-step explanation:

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Problem of the Day 7.7
Grace [21]

Answer:

576

Step-by-step explanation:

18 x 32 = 576

3 0
3 years ago
the average length of string a and string d is 10x cm . the average length of string b and string c is 8x cm . the average lengt
klasskru [66]

Answer:

a= 18x

Step-by-step explanation:

(a+d)/2 = 10x   (1)

(b +c)/2 = 8x  (2)

(b+c+d)/3 = 6x (3)

From the equation 2, we have (b+c)= 8x *2 = 16x

From the equation 3, we have d= 6x*3 - (b+c)= 18x- 16x = 2x

From the equation 1, we have a= 10x*2 -d= 20x - 2x= 18x

4 0
3 years ago
Anyone wanna help me do this because I’m not understanding how this works
Vinil7 [7]

Answer:

its b .

Step-by-step explanation:

8 0
3 years ago
Jessica is shopping for a new car. She found a blue car that has a 12-gallon gas tank and can go 384 miles on one tank. She foun
adelina 88 [10]

Answer:

Silver car

Step-by-step explanation:

It seems pretty hard but it's actually REALLY easy. gas mileage means the number of miles you can go on a particular amount of gallons. But the gallons have to be the same for both cars so that it's fair.

so let's go with 10 gallons. pretty broad number right?

so to get 12 gallons(the gallons for the blue car) to 10, We divide it by 12 then multiply it by 10. Try it yourself, (12/12)*10=???

then we do that to 384 (the miles for the blue car)

(384/12)*10=320

so 320 is the mileage for the first car. Repeat the steps for the silver car!

(14/14)*10=10

so then: (504/14)*10= 360.

So which is bigger, 320 or 360?

360 is bigger, meaning it has better gas mileage.

5 0
2 years ago
the ticket booth at a school play sells 140 adult tickets and 210 student tickets. find the ratio of adults to students write yo
julsineya [31]

ratio of adults to students can be written as a fraction


adult tickets / student tickets

140/210 can be simplified to 14/21

14/21 can be simplifed to 2/3

6 0
3 years ago
Read 2 more answers
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