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rewona [7]
3 years ago
12

Amanda was asked by her math teacher to solve an inequality on the board. Amanda put the following on the board: 3x - 2(x - 1) ≤

2x - 10 3x - 2x + 2 ≤ 2x - 10 1x ≤ 2x - 12 -1x ≤ -12 x ≤ 12 The other students were asked to do an error analysis on Amanda's work. What did the other students say? Did Amanda make a mistake, and if so what did she do wrong?
Mathematics
1 answer:
Bogdan [553]3 years ago
8 0

Answer:

Yes, she did not reverse the inequality sign when the last step was to multiply or divide by a negative number,

Step-by-step explanation:

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ipn [44]

Answer:

The answer to your question is: letter A

Step-by-step explanation:

See the picture below

When we divide the polynomial by the factor the result is zero, that's why letter A is the factor.

When we divide the polynomial by B, C or D the residue is not zero, then they are not factors.

4 0
3 years ago
How can you know if this equation is true?<br><br> 1/3+1/5=2/8=1/4
Harman [31]

By finding like denominators, you can add the fractions on each side. Then, compare by cross multiplying.

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2 years ago
5000
melisa1 [442]

Answer:

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Step-by-step explanation:

8 0
2 years ago
Find the area of the shaded sector of a circle. Leave ur answer in terms of pi
laila [671]

The area of the shaded sector of a circle is 64 pie cm^2

Here we are given that there is a circle: whose radius is 16cm and the angle formed by two radius that is angle of the sector is 90.

The area of the sector of circle is basically the area of the arc of a circle.

The two combination of two radii forms the sector of a circle while the arc is in between these two radii.

Area of sector is given by:

Area of sector=\frac{mXY}{360^{0} }.лr^{2}

Substituting the given value in the formula of area of sector:

Area of sector is=\frac{90}{360}\times pie\times r^{2}

We get after solving,

Area of sector= 64 pie cm^2

So from the given options, option 4 is correct.

Hence the area of the sector is 64 pie cm^2

To know more about Area of the sector:

brainly.com/question/22972014

#SPJ9

6 0
1 year ago
Consider the graph showing two functions.
Black_prince [1.1K]
The answer is C. hope i helped
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2 years ago
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