3 years ago

2x+1y=-9 Please help

Mathematics

1 answer:

xenn [34]3 years ago

5 0

Answer:

x=-(9+1y)/2

y=-2x-9

Step-by-step explanation:

2x=-9-1y

x=-(9+1y)/2

-1y=2x+9

y=-2x-9

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Sandra used partial products to find the product of 438 × 17 by multiplying 438 by 1 and 438 by 7 to get 3,066. Find the product

boyakko [2]

Let us determine the product of 438 and 17 by partial products.

Consider $438 = 400+30+8$

and $17 = 10+7$

So, $438 \times 17 = (400+30+8) \times (10+7)$

$438 \times 17 = (400\times 10)+(30 \times 10)+(8 \times 10) +(400 \times 7)+(30 \times 7)+(8 \times 7)$

= $438 \times 17 = (4000+300+80+2800+210+56)$

= 7446

Therefore, the product of 438 and 17 is 7446.

No, Sandra's answer is not correct.

Because she should have expressed 17 as (10+7), then if she multiplied (438 by 10) and (438 by 7). And, then added the results.Then her answer would be correct.

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Dorothy and Thelma both host book clubs. The box and whisker plots represented the attendance of their book clubs. The scale rep

viktelen [127]

Answer:

A. True

B. False

C. True

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Difference in median and maximum of Dorothy's: 6

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