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Stolb23 [73]
3 years ago
13

Solve ( 9 - r) ( 2 - 3r) using the FOIL method. QUICK PLEASE!

Mathematics
1 answer:
bazaltina [42]3 years ago
7 0

\huge\text{Hey there!}

\textsf{(9 - r)(2 - 3r)}

\textsf{= 9(2) + 9(-3r) + 2(-r) + (-r)(-3r)}

\mathsf{= 18 - 27r - 2r + 3r^2}

\mathsf{= 3r^2 + 18 - 27r - 2r}

\boxed{\large\text{COMBINE the LIKE TERMS}}

\mathsf{= 3r^2 + 18 + (-27r - 2r)}

\mathsf{= 3r^2 + 18 - 29r}

\mathsf{= 3r^2 - 29r + 18}

\boxed{\large\textsf{Therefore, your answer is: \large\boxed{\mathsf{3r^2 - 29r + 18}}}}\large\checkmark

\huge\text{Good luck on your assignment \& enjoy your day!}

~\frak{Amphitrite1040:)}

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8y-2d=0 5y+4d=26 1/4
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Answer:

y = 1

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Step-by-step explanation:

8y - 2d = 0 ---------------(I)

5y + 4d = 26 1/4

5y + 4d =  105/4  ------------------(II)

(I)*2      16y  - 4d = 0

(II)          <u>5y + 4d = 105/4</u>      {add (I) &(II)}

             21y        = 105/4

y = \frac{105}{5*21}\\\\y=\frac{105}{105}\\\\y = 1

Substitute y =1 in equation (I)

8*1 - 2d = 0

8 - 2d = 0

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      d = -8/-2

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