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3 years ago

Hi guys a joke what does cow celebrate?

Mathematics

1 answer:

damaskus [11]3 years ago

3 0

Moo day? lol

Explain:

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5x increased by 120%

Vlad [161]

"Increased by" means to multiply.

First, change the percentage to a number.

% ⇒ # : %/100

120(%) (120 ÷ 100) = 1.2

Now, you multiply.

5x × 1.2 = 6x

So, your answer is 6x.

3 0

3 years ago

A theatre has 15 seats in the first row, 20 seats in the second row, 25 seats in the third row, and so on. Write the linear equa

viktelen [127]

Answer: The answer is (n = 5r + 10).

Step-by-step explanation: Given that in a theatre, there are 15 seats in the first row, 20 seats in the second row, 25 seats in the third row, etc.

We are to write the linear equation that represents the number of seats 'n' in each row 'r'.

Now,

Number of seats in the 1st row = 15 = 5 × 3 = 5 × (1+2),

number of seats in the 2nd row = 20 = 5 × 4 = 5 × (2+2),

number of seats in the 3rd row = 25 = 5 × 5 = 5 × (3+2), etc...

Therefore, number of seats 'n' in the r-th row is given by the following linear equation -

n = 5 × (r+2), i.e., n = 5r + 10.

Thus, the required linear equation is n = 5r + 10.

7 0

3 years ago

X/5 = 8/9 what is x

Gelneren [198K]

Answer:

4.444444

Step-by-step explanation:

6 0

3 years ago

Please help with these

Nookie1986 [14]

The values would be

sin2x = -3/5

cos2x = -4/5

tan2x = 3/4

What are double angles in trigonometry?

The double angle formulas are used to find the values of double angles of trigonometric functions using their single angle values. For example, the value of cos 30° can be used to find the value of cos 60°. Also, the double-angle formulas can be used to derive the triple-angle formulas.

Given: tanx = -3

Now as we know,

$sin2x=\frac{2tanx}{1+tan^2x}\\\\sin2x=\frac{2(-3)}{1+(-3)^2}\\\\sin2x=\frac{-6}{10}\\\\sin2x=\frac{-3}{5}$

Now

$cos2x=\frac{1-tan^2x}{1+tan^2x}\\\\cos2x=\frac{1-(-3)^2}{1+(-3)^2}\\\\cos2x=\frac{1-9}{1+9}\\\\cos2x=\frac{-8}{10}\\\\cos2x=\frac{-4}{5}$

And similarly, we can find the value of tan2x, as

tan2x = sin2x/cos2x

= (-3/5)/(-4/5)

= 3/4

Hence,

The values would be

sin2x = -3/5

cos2x = -4/5

tan2x = 3/4

To learn more about double angles in trigonometry, visit:

brainly.com/question/6277459

#SPJ1

6 0

1 year ago

(4x5)+6x4+(9-3) (5+6) show your work

Shkiper50 [21]

Answer:

110

Step-by-step explanation:

8 0

3 years ago