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3 years ago

SOLVE IT...........✌✌✌✌✌✌

Mathematics

1 answer:

dalvyx [7]3 years ago

4 0

Answer:

Step-by-step explanation:

(cos x+cos y)²+(sin x-sin y)²

=cos²x+cos²y+2 cos x cos y+sin²x+sin²y-2 sin x sin y

=(cos ²x+sin ²x)+(cos ²y+sin ²y)+2(cos xcos y-sin x sin y)

=1+1+2cos(x+y)

=2+2 cos (x+y)

=2[1+cos (x+y)]

=2 *2cos²((x+y)/2)

$=4 cos^2(\frac{x+y}{2} )$

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Five more than three-fourths a number is -19

gogolik [260]

Answer:

5 + 3/4x = -19

Step-by-step explanation:

more than means adding

3 0

3 years ago

8-37 better than or equal to 29

Zina [86]

The statement that 8-37 greater than or equal to 29 is false and the correct statement is 8 - 27 is less than 29

<h3>What is an inequality?</h3>

An inequality can be defined as a relation which makes an unequal comparison between two numbers or mathematical expressions.

It is used most often to compare two numbers on the number line by their size

The information given be represented as;

$8 - 37\geq 29$

Now, let's find the difference from the left side

We have;

$- 29\geq 29$

From this, we can see that the statement is wrong as - 29 is neither greater than or equal to 29

The correct statement should be; 8 - 27 is less than 29

Thus, the statement that 8-37 greater than or equal to 29 is false and the correct statement is 8 - 27 is less than 29

Learn more about inequalities here:

brainly.com/question/24372553

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5 0

2 years ago

If 60 marks is 40% what is the full marks

alina1380 [7]

Let the full marks = x

Then, it would be: x*40/100 = 60

x = 6000/40

x = 150

Full marks will be 150

8 0

4 years ago

Read 2 more answers

I need 33. B) find the exact time when the radius reaches 10 inches<br><br> 100 points! Plz help

stealth61 [152]

Step-by-step explanation:

You have found a function r(V(t)). We can see that this function is a one variable function. The variable is time.

So in this specific function we can call r(v(t)), r(t).

So:

$r(t) = \sqrt[3]{ \frac{3 \times (10 + 20t)}{4\pi} }$

If α is the moment that the radius is 10 inches and since the function above gives radius in inches we have to solve the equation:

$r( \alpha ) = 10$

Which is the same as:

$\sqrt[3]{ \frac{3 \times (10 + 20 \alpha )}{4\pi} } = 10 \\ \frac{3 \times (10 + 20 \alpha )}{4\pi} = 1000 \\ (10 + 20 \alpha ) = \frac{4000\pi}{3} \\ 20 \alpha = \frac{(4000\pi - 30)}{3} \\ \alpha = \frac{(4000\pi - 30)}{60}$

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3 years ago

A rectangular swimming pool is 15 meters long, 10/1/2 meters wide and 2/1/2 meters deep.What is its volume

Alexus [3.1K]

The equation to find the Volume of something is length*Width*height
therefore:
(I'm confused as to what <span>10/1/2 means so)
</span>
•on the assumption that 10/1/2 means 10 and a half - 10.5
then it would be - 15*10.5*2.5 = 393.75m^3

<span>•on the assumption that 10/1/2 means 10 divided by 1/2 then it would be:
</span>15*20*4 = 1200m^3

8 0

3 years ago

Read 2 more answers

SOLVE IT...........✌✌✌✌✌✌​

SOLVE IT...........✌✌✌✌✌✌