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3 years ago

Please help me its for math ;-;

Mathematics

2 answers:

svetlana [45]3 years ago

6 0

Answer:

first one is C second one is A third one is A

Step-by-step explanation:

PLS MARK ME AS BRAINLY

anastassius [24]3 years ago

6 0

Answer:

First picture: D

$height = \sqrt{ {(7.5)}^{2} + {(6.2)}^{2} } \\ height = \sqrt{94.69} \\ height = 9.7 \: m$

Second picture: C

$distance = \sqrt{ {(2)}^{2} + {(3)}^{2} } \\ distance = \sqrt{13} \\ distance = 3.6\: miles$

Third picture: B

$= \sqrt{ {5}^{2} + {12}^{2} } \\ = \sqrt{169} \\ = 13 \: cm$

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3 years ago

Two bicyclists are 200 miles apart when they start racing towards one another. If their speeds are 12 mph and 6 mph respectively

Vladimir79 [104]

Answer:

10 hours.

Step-by-step explanation:

Two bicyclists are 200 miles apart when they start racing towards one another.

Their speeds are 12 mph and 6 mph respectively.

Distance = speed × time

Let the time taken by bicyclists = t

We have to calculate the time when they 20 miles apart this means they have covered the distance of 200 - 20 = 180 miles

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3 years ago

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Find the area of the shaded region in the graph y=x^2-2

Artist 52 [7]

By applying the concept of <em>definite</em> integral and the given restrictions, we conclude that the area of the <em>shaded</em> region in the graph is - 11/12.

<h3>How to find the area of the shaded region in the graph y = x² - 2</h3>

The area below the curve can be found by using <em>definite</em> integrals, which is defined here in this form:

$I = \int\limits^{1.5}_{0.5} {x^{2}-2} \, dx$ (1)

Now we proceed to calculate the area:

$I = \int\limits^{1.5}_{0.5} {x^{2}} \, dx - 2 \int\limits^{1.5}_{0.5}\, dx$

$I = \frac{x^{3}}{3}|_{0.5}^{1.5} - 2 \cdot x |_{0.5}^{1.5}$

$I = \frac{1.5^{3}-0.5^{3}}{3} - 2 \cdot (1.5 - 0.5)$

$I = -\frac{11}{12}$

By applying the concept of <em>definite</em> integral and the given restrictions, we conclude that the area of the <em>shaded</em> region in the graph is - 11/12.

<h3>Remark</h3>

The statement is incomplete. Complete form is shown below:

Find the area of the shaded region in the graph y = x² - 2, between x = 0.5 and x = 1.5

To learn more on definite integrals: brainly.com/question/14279102

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2 years ago

Can someone help me with this problem? Thank you!

ser-zykov [4K]

In order to find the answer, we need to multiply 15 x 12 then find the exponent based on the object shape (2D/3D).

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If the object is 2D, the exponent is 2 (squared). If the object is 3D, the exponent is 3 (cubed). We can tell that the object is 2D, so the exponent is 2.

The answer is 180^2, or 180 squared.

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