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3 years ago

If the length and width of a rectangle each doubled what happens to the area of the rectangle

1 answer:

3 0

It would quadruple.

Basically, it will quadruple because you are multiplying, which doesn't make much sense actually.

An example is with a 2 by 2 figure, you would get 4 squared as the area, but if you double both sides, 4 by 4, you would get 16 squared as the area.

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The general equation for the geometric sequence -1, -2, -4, ... is a n = -1 · 2 n - 1 .

katrin2010 [14]

$\text{First term,}~ a = -1\\\\\text{Common ratio,}~ r = 2\\\\\text{Nth term} = ar^{n-1}=-1\cdot 2^{n-1}\\$

4 0

2 years ago

I) CD and EF are parallel lines.

Elodia [21]

Answer:

1. J because it's a straight line

2. 225

however I only got 4 marks not 5.

Step-by-step explanation:

4 0

2 years ago

I need help ASAP!!!!

mrs_skeptik [129]

Answer:

Step-by-step explanation:

the shape is made up of 2 circles and one box add the 3 areas up

circle area = $\pi$ $r^{2}$

3.14* $4^{2}$ = 50.24

50.24*2 =100.48

box, box, pit now :P ooh I was thinking formula one racing, ( i've been watching that lately) anyway

box = 8*8 = 64

total = 164.48 is that an option? hmm, yes the bottom two choices.. now the perimeter . the perimeter is made up of the 2 circles

the circumference of a circle is 2 $\pi$ r

2* $\pi$ *r

2* $\pi$ *4 =25.1327 that's one whole circle , multiplied by 2 , I can see , by math in my head that's about 50.26

sooo

the 3rd choice looks good :)

5 0

3 years ago

Daniel guesses that he scored a 95 on his science test.His actual score is 91. What is the percent error in Daniel's guess? Roun

Kamila [148]

1) Formula for the percent of error:

                               [estimated measure - real measure]
Percent of error = ---------------------------------------------------- x 100
                                            real measure

2) Calculations:

                             [95 - 91]
Percent error = --------------- x 100 = 4.4 %
                                 91

Answer: 4.4%

3 0

3 years ago

Which of the following is the best estimate of the square root of 160

Virty [35]

Answer:

12-13

Step-by-step explanation:

the actual number is 12.64 whether your round up or down is up to you

6 0

3 years ago

Read 2 more answers