Please answer URGENT area of shapes THANKS !!!!!!!!!!!

Mathematics

1 answer:

Vinil7 [7]3 years ago

4 0

Answer:

Hope 292.5 is right.

Step-by-step explanation:

First thing, multiply the triangles base and height which will give you 143 then divide it by two which is 71.5. Then to the parallelogram which is base times height which is 117. Moving on to the trapezoid, meanin one-hal times height times first base plus second base giving you 104. Finally, add'em up, giving you a total of 292.5.

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If D varies directly with t and D is 105 when t is 3, find D when t is 8.<br><br> 35<br> 280<br> 840

drek231 [11]

Answer:

280

Step-by-step explanation:

D = kt

105 = 3k

k = 35

D = 35t

D = 35(8) = 280

5 0

4 years ago

Read 2 more answers

Simplify negative 3 over 2 / 9 over 6

Temka [501]

$\mathrm{Simplify} -\frac{3}2\div\frac{9}6.$

Dividing by a fraction is the same as multiplying by its reciprocal. (flipped version)

$-\frac{3}2\div\frac{9}6=-\frac{3}2\times\frac{6}{9}$

6 and 9 are both divisible by 3, so we can simplify 6/9 = 2/3.

$-\frac{3}2\times\frac{2}3$

We can multiply across right now, but we might as well cross cancel.
Look at the numbers diagonal from one another...-3 and 3 are both divisible by 3, so we can change them to -1 and 1...2 and 2 are both divisible by 2, so we can change them to 1 and 1...

$-\frac{1}1\times\frac{1}1$

Any fraction over 1 can just be expressed as a whole number.

$-1\times1$

Our final answer... $-\frac{3}2\div\frac{9}6=\boxed{-1}$

If you were to multiply across, (maybe you don't like cross cancelling, idk?) you'd get the same answer, of course.

$-\frac{3}2\times\frac{2}3=-\frac{6}6=\boxed{-1}$

6 0

3 years ago

Read 2 more answers

An object is taken out of a 21 degree C room and placed outside where the temperature is 4 degree C. Twenty-five minutes later t

kirza4 [7]

Answer: The temperature of the object after one hour is 12.9°C to the nearest tenth of a degree

Step-by-step explanation:

Please see the attachments below