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r-ruslan [8.4K]
3 years ago
13

If -2x + 3 = 7 and 3x + 1 = 5 + y , what is the value of y

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
4 0

Answer: -10

Step-by-step explanation:

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Keisha has $2.00 she wants to buy four notepads. Does she have enough money and explain your reasoning
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If each notepad costs $.65, it would cost $2.60 to buy four, so she does not have enough
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3 years ago
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Which represents the solution of the graphed system of equations, y=x^2-2x and y=-2x-1
elena55 [62]

Answer:

x = √(-1) = i

Since the value of √(-1) is not real.

The system has no real solution.

Step-by-step explanation:

The solution to the system of equations is at the point where they intercept each other.

y1 = y2

For the given equation;

y=x^2-2x and y=-2x-1

To get the where they intercept, we will equal both equations;

y=x^2-2x = -2x-1

x^2 - 2x = -2x - 1

x^2 - 2x + 2x + 1 =0

x^2 +1 = 0

x^2 = -1

x = √(-1) = i

Since the value of √(-1) is not real.

The system has no real solution.

6 0
4 years ago
A rectangular window has a length of 81.47 cm and a width of 34.2 cm. What is the least precise measurement of the perimeter of
alexgriva [62]

Answer:

In our case the least precise is the one with no decimal units, in our case 231 cm

Step-by-step explanation:

Perimeter=2(L+w)

where;

L=length=81.47 cm

W=width=34.2 cm

Replacing;

Perimeter=2(81.47+34.2)=231.34 cm

The most precise is the one with the highest decimal units, for example 231.34 in our case the least precise is the one with no decimal units, in our case 231

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A box of what????? I don't get it
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What's the algebraic expression for 5,9,13,17,21
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1,5,9,13,17,21,25,29..., 4n+1
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