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Airida [17]
3 years ago
12

What mistake did she make while solving the problem?

Mathematics
1 answer:
umka2103 [35]3 years ago
6 0

Answer:

Ms, Erickson added 6x^3 plus -3x^2 and these terms have different exponents.l

Step-by-step explanation:

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The sides of a square all have a side length of y. Write a simplified area function in terms of y for a rectangle whose length i
gizmo_the_mogwai [7]

The simplified area function in terms of y for a rectangle is f(y)=2 y^{2}+4 y

<u>Solution:</u>

Given that length of each side of a square = y

Need to determine area of rectangle whose length is twice the length of the square and width is 2 units longer that the side length of square

Length of rectangle = twice of side length of square = 2 \times y = 2y

Width of rectangle = 2 + side length of square = 2 + y = y + 2

\text { Area of rectangle }=\text { length of rectangle } \times \text { width of rectangle.}

On substituting length and width in formula for area, we get

\text { Area of rectangle }=2 y \times (y+2)=2 y^{2}+4 y

Hence function f(y)=2 y^{2}+4 y is represents area of required rectangle.

3 0
3 years ago
Which of the following inequalities are correct?
Natali5045456 [20]

Answer:

A and B

Step-by-step explanation:

- 3/5 is less than -1/5 because it is farther away from 0 on a number line (also, when it comes to figure out which inequality is true with negative number, the smaller one is going to be greater because it is closer to 0 on a number line)

3/5 is greater than 1/5 because they are both positive and 3/5 is the bigger number

-1/5 is not less than -3/5 because if A is true, than this cannot be true because it is saying the exact opposite.

6 0
3 years ago
Which is not a proportianal relationship A y=x, B x-y=2, C=y=2x and D x +2y=0
noname [10]

Answer:

Choice B

Step-by-step explanation:

Choice B is not a proportional relationship because it is not in the form of Y = KX.

First, you must convert the equation, X - Y = 2 to Y = MX + B by subtracting X to the right side to get -Y = -X +2. Then divide each side by -1 to get a positive Y value. Then you are left with Y = X - 2, which is not in the form of Y=KX.

5 0
3 years ago
Please help, tell whether the two figures are similar and explain why. ​
pychu [463]

Answer:

the perimeter is the same on both, because the number are the same

6 0
4 years ago
Read 2 more answers
Solve the inequality -4&gt;-4 + h.<br> A. h&lt;0<br> B. h&gt;0<br> C. h&lt;3<br> D. h&gt; -8
k0ka [10]

Answer:

A. h>0

Step-by-step explanation:

8 0
4 years ago
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