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3 years ago

Help me plz and merry Christmas

Mathematics

2 answers:

nataly862011 [7]3 years ago

8 0

Answer:

12.5h cm²

Step-by-step explanation:

Area of trapezoid

=h×(12+13)/2 cm²

=h×25/2 cm²

=12.5h cm² ( in algebraic way)

aleksandr82 [10.1K]3 years ago

4 0

Answer:

The answer is 12 times 23

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A triangle has two constant sides of length 5 feet and 7 feet. The angle between these two sides is increasing at a rate of 0.9

o-na [289]

Answer: $12.74 ft^2/s$

Step-by-step explanation:

Given

Two sides of triangle of sides 5 ft and 7 ft

and angle between them is increasing at a rate of 0.9 radians per second

let $\theta$ is the angle between them thus

Area of triangle when two sides and angle between them is given

$A=\frac{ab\sin C}{2}$

$A=\frac{5\times 7\times \sin \theta }{2}$

Differentiate w.r.t time

$\frac{\mathrm{d} A}{\mathrm{d} t}=\frac{35\cos theta }{2}\times \frac{\mathrm{d} \theta }{\mathrm{d} t}$

at $\theta =\frac{\pi }{5}$

$\frac{\mathrm{d} A}{\mathrm{d} t}=\frac{35\times cos(\frac{\pi }{5})}{2}\times 0.9$

$\frac{\mathrm{d} A}{\mathrm{d} t}=12.74 ft^2/s$

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4 years ago

At the beginning of the snowstorm, Olivia had 4 inches of snow on her lawn. The snow then began to fall at a constant rate of 1

Alekssandra [29.7K]

Answer:

For the first one It would be 8 but the second one id k

Step-by-step explanation:

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3 years ago

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Which values of a, b, and c correctly represent the answer in simplest form? 6 al- o a=1,0-5,0-9 a= 10,5= 18.0= 1 a=9,0-5,0- 1 a

kumpel [21]

Answer:

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Step-by-step explanation:

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3 years ago

PLEASE HURRY AND ANSWER THIS!

Shalnov [3]

Answer:

Translate the circles so they share a common center

point, and dilate circle Y by a scale factor of 3.

Step-by-step explanation:

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3 years ago

What are the coordinates of E??

Paraphin [41]

Answer:

(10, 1)

Step-by-step explanation:

It tells you that when you translate it you add 2 to the x-coordinate and subtract 7 from the y-coordinate. This means that the point E, (8, 8), would become (8 + 2, 8 - 7) or (10, 1).

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2 years ago

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