2 years ago

Simplify the expression: sin(7x/3)cos(5x/2) - cos(7x/3)sin(5x/2)

Mathematics

1 answer:

monitta2 years ago

3 0

Ok no need to worry

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A circle rolls once, without slipping, along the outside of a square with sides of length 4 inches, and returns to its starting

pentagon [3]

Answer:

16 inches

Step-by-step explanation:

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1 year ago

Laurel is a huge fan of hats, she likes all kinds of hats and recently started collecting them. She already owns 3 hats. She pla

horsena [70]

Answer:

y=3+x

Step-by-step explanation:

If you are ever unsure about how to proceed with a math problem, one thing I find very helpful is to imagine the scenario and sub in the numbers. That's always helped me

At the very beginning, when

x=0, Laurel hasn't bought any new hats yet, she owns 3 hats, so y=3.

After the first month, when x=1, laurel owns 3 hats, plus the 1 hat she just bought. She now owns y=3+1 hats.

After the second month, when

x=2, laurel owns 3 hats, plus the 2

new hats she bought after she started collecting hats. She now owns y=3+2

hats.

Now, we can write the function.

y=3+x

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1 year ago

What is the format of this proof? Given: ∠ABC is a right angle, ∠DBC is a straight angle Prove: ∠ABD is a right angle two-column

borishaifa [10]

Answer: Two column proof.

Explanation :

A two-column proof is one common way to organize a proof in geometry.Two-column proof always has two columns where one for statements and one for reasons.

Here,

$\angle ABC$ is a right angle and $\angle DBC$ is a straight angle( $180^{\circ}$ ) . (given)

Therefore, $\angle ABD$ must be right angle. ( because, $\angle ABD=\angle DBC-\angle ABC= 180^{\circ}-90^{\circ}=90^{\circ}$ )

Which is the required proof.

Since, In the above proof both statements and reasons both mentioned, therefore, it is the two column proof.

Note: We can also make a table which consist of two columns, in first we can mention 'statements' while in second column we can mention 'reasons'.

3 0

1 year ago

Read 2 more answers

Louis wants to carpet the rectangular floor of his basement the basement has an area of 864 square feet the width of the basemen

Irina18 [472]

Divide the 864 by three and multiply that answer by 2.

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1 year ago

Bob has some 10 lb weights and some 3 lb weights. Together, all his weights add up to 50 lbs. If x represents the number of 3 lb

Romashka [77]

Total weight = 50 lb
x = number of 3-lb weights
y = number of 10-lb weights

weight of 3-lb weights = 3x
weight of 10-lb weights = 10y
total weight = 3x + 10y

equation
3x + 10y = 50

8 0

1 year ago