2 years ago

Help me please!!!

Mathematics

1 answer:

34kurt2 years ago

3 0

Step-by-step explanation:

sin(2x) + cos(3x)

Use double angle formula sin(2x) = 2 sin x cos x.

Use triple angle formula cos(3x) = 4 cos³x − 3 cos x.

Substitute:

2 sin x cos x + 4 cos³x − 3 cos x

You might be interested in

The total cost for 8 bracelets,including shipping was $54. the shipping charge was $6.

nevsk [136]

Im pretty sure it would be 54÷ b- 6 if your looking for only the cost of the braclets nothing else.

4 0

2 years ago

Read 2 more answers

Find the slope of the line that passes through (9, 6) and (4, 5).

boyakko [2]

Answer:

slope = $\frac{1}{5}$

Step-by-step explanation:

calculate the slope m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (9, 6 ) and (x₂, y₂ ) = (4, 5 )

m = $\frac{5-6}{4-9}$ = $\frac{-1}{-5}$ = $\frac{1}{5}$

8 0

1 year ago

½(4k + 3r) ÷ 3^1 k = 9 r = 6 show work

vampirchik [111]

Answer:

The solution is given below:

Step-by-step explanation:

$\\ \frac{1}{2} (4k + 3r) \div {3}^{1}$

As we know the value of k and r so the equation will be

$\\ \frac{1}{2} (4 \times 9 + 3 \times 6) \div {3}^{1}$

$\\ = \frac{1}{2} (36 + 18) \div 3$

$\\ = \frac{1}{2} \times 54 \div 3$

$\\ = \frac{1}{2} \times 18$

$\\ = 9$

3 0

2 years ago

Read 2 more answers

ASAP ASAP ASAP ASAP ASAP

GarryVolchara [31]

Answer:

150 (D)

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Find the area of a triangle with a base of 18 feet and a height of 7 feet

amid [387]

.5*18*7=9*7=63 ft squared

4 0

2 years ago

Read 2 more answers