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3 years ago

Sinxcosy = 1/2 (sin(x+y)+cos (x-y))

Mathematics

1 answer:

sasho [114]3 years ago

8 0

(1/2) [SIN(X-Y)-SIN(X+Y)]= COS(X)SIN(Y)

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PLEASE HELP AND FAST

NikAS [45]

Answer:

The answer is D

Step-by-step explanation:

The solution is in the file

3 0

3 years ago

Solve for x. Show each step please . Circle your final answer. 2(8-12x)+8x= -25x+52

Vera_Pavlovna [14]

Answer:

x = 4

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

2(8−12x)+8x=−25x+52

(2)(8)+(2)(−12x)+8x=−25x+52(Distribute)

16+−24x+8x=−25x+52

(−24x+8x)+(16)=−25x+52(Combine Like Terms)

−16x+16=−25x+52

Step 2: Add 25x to both sides.

−16x+16+25x=−25x+52+25x

9x+16=52

Step 3: Subtract 16 from both sides.

9x+16−16=52−16

9x=36

Step 4: Divide both sides by 9.

9x/9 = 36/9

x = 4

8 0

4 years ago

Max's shop sells stuffed teddy bears. Today, Max sold 7 teddy bears for a total of $122.50. Which equation can be used to find b

Viefleur [7K]

Answer: 17.50

Step-by-step explanation:

6 0

3 years ago

Factor completly 4x^2 +8x -5

DaniilM [7]

∑ Hey, jillianwagler ⊃

Answer:

$\left(2x-1\right)\left(2x+5\right)$

Step-by-step explanation:

║Given info║:

Factor completely: $4x^2 +8x -5$

Solution~:

Breaking the expression~: $\left(4x^2-2x\right)+\left(10x-5\right)$

Factor out 2x from 4x² -2x : 2x(2x-1)

Factor out 5 from 10x - 5 : 5(2x - 1)

Put together: $=2x\left(2x-1\right)+5\left(2x-1\right)$

Factor out 2x - 1: $=\left(2x-1\right)\left(2x+5\right)$

xcookiex12

8/19/2022

4 0

2 years ago

I forgot about how you do this and answer. Do you mind to also explain the steps?

photoshop1234 [79]

Answer:

Step-by-step explanation:

First, call the unknown angle x.

Use the Exterior Angle Theorem:

140 = 45 + x

x = 95°

7 0

3 years ago