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castortr0y [4]
3 years ago
7

Solve the system of equations by substitution. What is the solution for x? (1 point) 2x + y = 1 4x + 2y = −2

Mathematics
2 answers:
valentina_108 [34]3 years ago
4 0
The answer is no solution because 2 is not equal to -2

arlik [135]3 years ago
3 0
2x + y = 1
4x + 2y = -2

Solve for y in the first equation. Subtract 2x from both sides.
y = 1 - 2x

Now plug in y into the second equation.
4x + 2(1 - 2x) = -2
Distribute 2 to (1 - 2x).
4x + 2 - 4x = -2
Combine like terms.
2 = -2

2 does not = -2 so the answer to this problem is no solution.
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Which ratio correctly compares 2 feet to 48 inches, when the lengths are written using the same units?
guajiro [1.7K]

Answer: OPTION D

Step-by-step explanation:

To solve this problem you must apply the proccedure shown below:

- Convert from 48 inches to foot. You know that 12 inches=1 foot. Then you have:

 (48inches)(\frac{1foot}{12inches})=4feet

- Therefore, keeping on mind that 48 inches is 4 feet, and you must find the ratio that  correctly compares 2 feet to 48 inches, you can write:

ratio=\frac{2feet}{4feet}

- Reduce the fraction, then:

ratio=\frac{1}{2}

- You can rewrite it as following:

ratio=1:2

3 0
3 years ago
2x2 + 3x ANSWER TO THIS
igomit [66]

Answer:

x(2x+3)

Step-by-step explanation:

Im guessing 2x2 is 2x^2

2x^2 + 3x = 0

x(2x+3)

3 0
4 years ago
3x(x2 + 2x – 6) + 4(x2<br> – 6x + 2)
Drupady [299]

Step-by-step explanation:

3x(x2 + 2x – 6) + 4(x2

– 6x + 2)

4 0
3 years ago
Can somebody help me first answer gets brainiest pls help
damaskus [11]
Answer: I believe the answer is 216 Square units.

Explanation:
1. Cut the shape in half. Now you have a square and a triangular shape.

2. The square is 12 inches on all four sides. 12 • 12 = 144. 144 is the area for the square.

3. Now, the triangular shape. The bottom of the shape is 12 because we divided the total 24 in half with the square. The left side (the longer side) of the shape is also 12 because it is parallel to the square with 12 as the same measurement. The right side (the shorter side) of the shape is 6 because it's half the size of the square’s length. The length of the top of the shape is also 12 because it is half of the square’s width of 24.

4. Now that we have found the measurements of the triangular shape, we can multiply (length • width) and add. The square is 144 units (12•12=144) and the triangular shape is 72 (12•6=72). 144 + 72= 216.

I hope this helps! :)
6 0
3 years ago
Vladimir is walking down the street at a speed of 4 miles per hour. Write an equation for the distance in miles, d, that Vladimi
zubka84 [21]

Answer:

d=4t

Step-by-step explanation:

We have been given that Vladimir is walking down the street at a speed of 4 miles per hour. We are asked to write an for the distance in miles, d, that Vladimir walks over time in hours, t.

We will use rate formula to solve our given problem.

\text{Speed}=\frac{\text{Distance}}{\text{Time}}

\text{Distance}=\text{Speed}\times\text{Time}

Upon substituting our given information in distance equation, we will get:

d=4\cdot t

d=4t

Therefore, the equation d=4t represents the distance that Vladimir walks over time in hours.

8 0
3 years ago
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