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kirill [66]
3 years ago
13

Use the GCF to write an equivalent expression in factored form for the expression 21a + 28y

Mathematics
1 answer:
Finger [1]3 years ago
5 0

Answer:7

Step-by-step explanation:

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Elina [12.6K]

Hi

The Mean is 11.5

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A recipe uses 2 cups of sugar to make 32 brownies. How many cups of sugar are needed to make 72 brownies?
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Sarah thinks there will be 60 people at the party. show that the cost will be $1350
svetoff [14.1K]
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Or do you need to explain it?
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3 years ago
What is the equation of the line that passes through the points (15, 9) and (Negative 2, 9)? y =
Bad White [126]

\bf (\stackrel{x_1}{15}~,~\stackrel{y_1}{9})\qquad (\stackrel{x_2}{-2}~,~\stackrel{y_2}{9}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{9}-\stackrel{y1}{9}}}{\underset{run} {\underset{x_2}{-2}-\underset{x_1}{15}}}\implies \cfrac{0}{-17}\implies 0 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{9}=\stackrel{m}{0}(x-\stackrel{x_1}{15})\implies y-9=0\implies y=9

3 0
3 years ago
Read 2 more answers
When you would not need to use the quadratic formula
sergiy2304 [10]

Answer: When the quadratic equation  can be factored or solved by completing the square, you do not need to use the quadratic formula

Step-by-step explanation: In the form   ax² + bx + c

Whenever <em><u>a</u></em> is 1 (implied, no coefficient of x²) and the constant,  <u><em>c</em></u>, is a multiple of numbers whose sum or difference is equal to <u><em>b</em></u>, factoring is much quicker and easier than using the quadratic formula.

Even when there is a coefficient of x², there are procedures to find the factors and solve for x without resorting to the quadratic formula.

3 0
3 years ago
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