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3 years ago

Complete this equation Sin(x+y)/sin(x-y)=

Mathematics

1 answer:

Bingel [31]3 years ago

8 0

Answer:

Step-by-step explanation:

sin(x+y)/sin(x-y)

here sin ans sin gets cancel so the final answer is

x+y/x-y

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To mix plaster for a dental model, 35 mL of water is used for 100g of plaster. How many mL of water should be used for 250g of p

laila [671]

Okay, here we have this:

Considering the provided information, we are going to calculate the requested value, so we obtain the following rule of three:

$\begin{gathered} \frac{x}{35mL\text{ of water}}=\frac{250g\text{ of plaster}}{100g\text{ of plaster}} \\ x=\frac{250g\text{ of plaster}}{100g\text{ of plaster}}\cdot35mL\text{ of water} \end{gathered}$

Solving for x:

$\begin{gathered} x=2.5\cdot35mL\text{ of water} \\ x=87.5mL\text{ of water} \end{gathered}$

Finally we obtain that 87.5mL of water should be used for 250g of plaster.

3 0

9 months ago

In △ABC, BM is a median, △BMC is equilateral and MC = 3cm. Through M is drawn line l∥AB that intersects CB at point N. Find:

ruslelena [56]

Answer:

m∠ABC = 60°

The distance from C to AB = 3 cm

The distance from l to AB = 1.5 cm

Step-by-step explanation:

The median of ΔABC = BM

The length of MC = 3 cm

Type of triangle given as ΔBMC = Equilateral triangle

Line MN is parallel to AB and passes through M intersecting CB at N

Given that BM is a median, we have;

MC = AM = 3 cm

BM = MC = CB = 3 cm, from ΔBMC = Equilateral triangle

CN = NB by midpoint theorem

∴ CB = CN + NB = 2·CN = 3 cm

The distance from C to AB = CB = 3 cm

The distance from C to AB = 3 cm

CN = 3/2 = 1.5

CN = NB = 1.5

The distance from l to AB = CN = 1.5 cm

The distance from l to AB = 1.5 cm

m∠ABC = m∠BMC = m∠MBC = 60° Interior angles of an equilateral triangle.

m∠ABC = 60°

6 0

2 years ago

Write the polynomial in standard form: x^2+4-3x

Sonbull [250]

Answer:

x^2-3x+4

Step-by-step explanation:

6 0

3 years ago

A girl stands on a carousel and rotated around the ride 6 times if the distance between the girl and the center of the carousel

Lesechka [4]

Answer:

301.74 feet

Step-by-step explanation:

Given:

A girl stands on a carousel and rotated around the ride 6 times.

The distance between the girl and the center of the carousel is 8.

It means radius, r = 8 feet

Question asked:

How many feet did the little girl travel ?

Solution:

As here asked that how many feet the little girl traveled during rotation around the ride 6 times, we will find circumference of the circle.

$Circumference\ of \ circle =2\pi r$

$=2\times\frac{22}{7} \times8\\ =\frac{352}{7} \\ =50.29\ feet$

Now, we will multiply this by 6 as she rotated around the ride 6 times.

$6\times50.29=301.74\ feet$

Thus, the little girl traveled 301.74 feet during this ride.

8 0

3 years ago

Please hep I am struggling and this dang hw is due by 9!

olganol [36]

Answer:

18x^3+8x^2

Ya know you don't have to post the same question three times

3 0

3 years ago