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3 years ago

Help pls ! Will mark brainliest

Mathematics

2 answers:

dedylja [7]3 years ago

7 0

Answer:

Step-by-step explanation:

AleksAgata [21]3 years ago

6 0

Answer:

I Believe that the answer is B

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What is 40/6 in simplest form?

svetoff [14.1K]

$Divide
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3 years ago

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Sin(18m-12)cos(7m+2)find the value of m

insens350 [35]

Answer:

m = -2/7 + π/14 + (π n_1)/7 for n_1 element Z

or m = 2/3 - (π n_2)/18 for n_2 element Z

Step-by-step explanation:

Solve for m:

-cos(7 m + 2) sin(12 - 18 m) = 0

Multiply both sides by -1:

cos(7 m + 2) sin(12 - 18 m) = 0

Split into two equations:

cos(7 m + 2) = 0 or sin(12 - 18 m) = 0

Take the inverse cosine of both sides:

7 m + 2 = π n_1 + π/2 for n_1 element Z

or sin(12 - 18 m) = 0

Subtract 2 from both sides:

7 m = -2 + π/2 + π n_1 for n_1 element Z

or sin(12 - 18 m) = 0

Divide both sides by 7:

m = -2/7 + π/14 + (π n_1)/7 for n_1 element Z

or sin(12 - 18 m) = 0

Take the inverse sine of both sides:

m = -2/7 + π/14 + (π n_1)/7 for n_1 element Z

or 12 - 18 m = π n_2 for n_2 element Z

Subtract 12 from both sides:

m = -2/7 + π/14 + (π n_1)/7 for n_1 element Z

or -18 m = π n_2 - 12 for n_2 element Z

Divide both sides by -18:

Answer: m = -2/7 + π/14 + (π n_1)/7 for n_1 element Z

or m = 2/3 - (π n_2)/18 for n_2 element Z

8 0

3 years ago

If triangle ABC is isosceles, what is the value of ∠A?<br>

Delvig [45]

×+102=180
-102=-102
×78

4 0

3 years ago

What is the circumference of the circle is 10 cm , to the nearest tenth of a centimeter

spin [16.1K]

Hope this helps you and good-luck

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3 years ago

A cylinderical container of height 28cm and diameter 18cm is filled with water. The water is then poured into another container

tiny-mole [99]

Answer:

h = 24 cm

Step-by-step explanation:

volume of water in the cylinder = volume of water in the rectangular base container

But ,

volume of cylinder = $\pi$ $r^{2}$ h

where: is the radius and h is the height.

volume of cuboid = length x width x height

= l x w x h

So that;

$\pi$ $r^{2}$ h = l x w x h

But, r = $\frac{diameter}{2}$ = $\frac{18}{2}$ = 9 cm, height of cylinder = 28 cm, length = 27 cm, width = 11 cm, $\pi$ = $\frac{22}{7}$ .

Thus,

$\frac{22}{7}$ x $(9)^{2}$ x 28 = 27 x 11 x h

$\frac{22}{7}$ x 81 x 28 = 27 x 11 x h

7128 = 297h

h = $\frac{7128}{297}$

= 24

h = 24 cm

The depth of the water in the container is 24 cm.

5 0

3 years ago