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Wewaii [24]
2 years ago
10

Solve in systems by substitution y=2x+1 and 2x-y=3

Mathematics
2 answers:
nika2105 [10]2 years ago
4 0

Answer: No Solution

Step-by-step explanation:

y=2x+1 and 2x-y=3

Substitute y=2x+1 into 2x-y=3

So you will have: 2x-2x+1=3

Then,

2x-2x=0

0+1=3

1=3

1 doesn't equal 3 so there is no solution.

Fofino [41]2 years ago
4 0

Answer:

No solution.

Step-by-step explanation:

Notice that the second equation can be rearranged to be y = 2x - 3. 2x + 1 cannot equal 2x - 3 so there is no solution to this system.

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A pet store has three fish tanks, each holding a different volume of water and a different number of fish. Tank AAA holds 40\tex
denpristay [2]

Answer:

The tanks by volume per fish from least to greatest:

Tank C, Tank A, Tank B

Step-by-step explanation:

A pet store has three fish tanks, each holding a different volume of water and a different number of fish.

Order the tanks by volume per fish from least to greatest.

Tank A holds 40 L and 5 fish.

= 40L/5 fishes

= 8 volume per fish

Tank B holds 100 L and 12 fish

= 100L/12 fishes

= 8.3333333333 volume per fish

Tank C holds 180 L and 23 fish.

= 180L /23 fish

= 7.8260869565 volume per fish

The tanks by volume per fish from least to greatest

Tank C, Tank A, Tank B

6 0
3 years ago
What is the radius of a circle whose equation is (x + 5)^2 + (y – 3)^2 = 42?
natita [175]
The equation of a circle centered at point (x1,y1) with a radius r is given by

(x-x_1)^2 + (y-y_1)^2 = r^2

are you sure you wrote down the problem correctly?
7 0
3 years ago
Read 2 more answers
Two step equations solve for x​
Semmy [17]

Answer:

v=15

Step-by-step explanation:

First you multiply both v+9/3 and 8 by 3.

Like this 3 x v+9/3=8 x 3.

Then you will get v+9=24.

After you multiply both sides by 3 you subtract 9 from both sides.

v+9-9=24-9

and you will get v=15.

5 0
3 years ago
Write a problem that requires multiplying two decimals to find the answer. The product must have two decimals places.
julsineya [31]

Answer:

3.5 * 6.7 = 23.45

Step-by-step explanation:

(I am assuming you know how to do 2-digit by 2-digit problem, but just in case you don't I am putting in how to do it.)

You would multiply the problem like a normal 2-digit by 2-digit problem.

- multiply the ones places (5*7=35)

- you bring the 3 of the 35 and put it above the other 3

- you then do 7*3=21+3 because you moved it.

-so the first part of the question would be 35*7=245

-you go below the 5 and put a zero because you dont need the ones place anymore.

-you then do the same thing but with the tens place instead.

- You would then get 35*6=210, but you can't forget the zero.

- you would then add 245+2100=2,345

- But don't forget the decimals. you have to add the decimals to the answer.

- you count how many numbers that are behing both numbers, in this case it would be two.

- you then put the decimal after the ones and tens place.

*SORRY IF THIS DOESN'T MAKE SENSE*

7 0
2 years ago
Alvin is 6 years older than Elga. The sum of their ages is 106 . What is Elga's age?
Andrews [41]
Elga's age is 50, and Alvin's age is 56. So, the sum of their ages is 106.
8 0
3 years ago
Read 2 more answers
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