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2 years ago

If m equals x plus 4 squared and x equals -1 then m equals what

Mathematics

1 answer:

arsen [322]2 years ago

5 0

Answer:

15?

Step-by-step explanation:

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Jay wants to make a box, with no lid (or top), out of a 10" x 6" rectangular piece of cardboard. If Jay cuts squares with dimens

LiRa [457]

Answer:

a. $V(x)=x(10-2x)(6-2x)$

b. $S(x)=4(15-x^2)$

Step-by-step explanation:

Dimensions of rectangular piece of cardboard= $10\times 6$

According to question

Length of box,l=10-2x

Breadth of box,b=6-2x

Height of box,h=x

Volume of box= $l\times b\times h$

Substitute the values in the formula

Volume of box= $x(10-2x)(6-2x)$

$V(x)=x(10-2x)(6-2x)$

b.Surface area of box= $2(b+l)h+lb$

Because the box has no lid

Substitute the values in the formula

Surface area of box= $2(10-2x+6-2x)x+(10-2x)(6-2x)$

Surface area of box= $2(16-4x)x+60-20x-12x+4x^2$

Surface area of box= $32x-8x^2+60-32x+4x^2$

Surface area of box= $60-4x^2=4(15-x^2)$

Surface area of box, S(x)= $4(15-x^2)$

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2 years ago

If Lisa ran 50 yards and Kelly ran 51 meters, who ran farther?

melisa1 [442]

Answer:

kelly

Step-by-step explanation:

51 meters is longer

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2 years ago

Jane sold a radio costing sh.3800 at a profit of 20%.She earned a commission of 22 1/2% on the profit.Find the amount he earned

aalyn [17]

Answer:

20%=3800 => all of it is 19000

i didn't undrestand what do you want

sorry:)

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2 years ago

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2 years ago

Prove that for all natural numbers n 8n-3n is divisible by 5

sertanlavr [38]

8n-3n=n(8-3)=n(5)=5n=5 times n
5 is a factor of 5n so it is evenly divisible by 5
and since n is a natural number, it is the multiplier to make multipules of 5

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2 years ago

Read 2 more answers

If m equals x plus 4 squared and x equals -1 then m equals what​

If m equals x plus 4 squared and x equals -1 then m equals what