Use a proprtion to solve:

Cross Multiply: 480 · 14 = 4 · x
Divide both sides by 4:

1680 = x
Answer: she will need 1680 grams
Equilateral triangle: all sides are equal lengths, all angles are equal too
Scalene triangle: has three different sides, all angles are different
Isosceles triangle: 2 sides are equal, one isn’t, 2 angles are the same, one is different
Acute triangle: angles are less than 90 degrees
Obtuse triangle: angles are larger than 90 degrees
Right triangle: angle forms a 90 degree angle
Those are the triangles :)
Answer:
16.2$
Step-by-step explanation:
Price of the notebooks: 15$
Tax Rate: 8%
Tax: 15$ * 8% = 1.2$
Price after Tax: 15$ + 1.2$ = 16.2$
Answer:
2. domain: {3,4,5,6,7}; range: {2,3,4,5,6}
4. IS a function
Step-by-step explanation:
2. The <em>domain</em> is the list of first numbers of each pair.
The <em>range</em> is the list of second numbers.
4. If each value on the left only has <em>one arrow</em> coming from it, the relation <u>is</u> a function. That is the case here.
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Contrast that to the problem above (3.). In that one, the number 4 1/2 has two arrows coming from it. That relation is NOT a function.
Answer:
- correct answer is C
- Haley incorrectly applied the distributive property
Step-by-step explanation:
If you simplify the given equation, you find it matches choice C.

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Haley's error seems to be failing to distribute the 1/2 properly when she eliminated parentheses. Apparent, she incorrectly decided that ...
1/2(6 -x) ⇒ 3 -x . . . . instead of 3 -1/2x
Then when -x was added to +3x, she got 2x. Had she done it properly, she would have added -1/2x to +3x to get 5/2x.
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<em>Additional comment</em>
It is a common error to "distribute" the factor outside parentheses to the first term only, as Haley apparently did. Another common error is to fail to distribute minus signs properly. The distributive property requires you apply the outside factor to <em>all</em> of the terms inside parentheses.