Use the Distributive Property to write an equivalent expression for the expression (a + b)(2 + y).

Mathematics

2 answers:

Dovator [93]3 years ago

5 0

Answer:

2a+ay+2b+by

We multiple the first number by the two numbers in the next parentheses

slavikrds [6]3 years ago

3 0

Answer:

$2a+2b+ay+ab$

Step-by-step explanation:

$(a+b)(2+y)\\(2a+ay+2b+by)\\(2a + 2b+ay+ab)$

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Can you show the steps of the answers too? pleaseeee

vaieri [72.5K]

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3(x+7) = 3·x + 3·7 = 3x + 21

5(2x+7) = 5·2x + 5·7 = 10x + 35

3 0

4 years ago

In a circle, a 90 degree sector has area of 36pi ftsqd. what is the radius of the circle?

lukranit [14]

$\bf \textit{area of a sector of a circle}\\\\
A=\cfrac{\theta \pi r^2}{360}\quad 
\begin{cases}
r=radius\\
\theta =angle~in\\
\qquad degrees\\
------\\
\theta =90\\
A=36\pi 
\end{cases}\implies 36\pi =\cfrac{90\pi r^2}{360}
\\\\\\
\cfrac{36\pi }{90\pi }=\cfrac{r^2}{360}\implies \cfrac{2}{5}=\cfrac{r^2}{360}\implies \cfrac{360\cdot 2}{5}=r^2\implies 144=r^2
\\\\\\
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4 0

4 years ago

Evaluate 12sigma n=3 -5n-1

mestny [16]

Answer:

-385

Step-by-step explanation:

Perhaps you want the sum of 10 terms of the arithmetic sequence ...

-16, -21, -26, ..., -61

The sum of any arithmetic sequence is the average term multiplied by the number of terms. The average term is the average of the first and last terms. Here, that is ...

((-16-61)/2)(10) = -385