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3 years ago

1) 3х • 3х Can someone help please I don’t get this shiii

1 answer:

5 0

Take out the constants.
(
3
×
3
)
x
x
(3×3)xx

2 Simplify
3
×
3
3×3 to
9
9.
9
x
x
9xx

3 Use Product Rule:
x
a
x
b
=
x
a
+
b
x
a
x
b
=x
a+b
.
9
x
2
9x
2

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Please help i beg i never get these right

Anuta_ua [19.1K]

Answer:

$\sin(105) = \frac{\sqrt 2 + \sqrt 6}{4}$

Step-by-step explanation:

Given

$\sin(105^o)$

Required

Solve

Using sine rule, we have:

$\sin(A + B) = \sin(A)\cos(B) + \sin(B)\cos(A)$

This gives:

$\sin(105^o) = \sin(60 + 45)$

So, we have:

$\sin(60 + 45) = \sin(60)\cos(45) + \sin(45)\cos(60)$

In radical forms, we have:

$\sin(60 + 45) = \frac{\sqrt 3}{2} * \frac{\sqrt 2}{2} + \frac{\sqrt 2}{2} * \frac{1}{2}$

$\sin(60 + 45) = \frac{\sqrt 6}{4} + \frac{\sqrt 2}{4}$

Take LCM

$\sin(60 + 45) = \frac{\sqrt 6 + \sqrt 2}{4}$

Rewrite as:

$\sin(60 + 45) = \frac{\sqrt 2 + \sqrt 6}{4}$

Hence:

$\sin(105) = \frac{\sqrt 2 + \sqrt 6}{4}$

3 0

2 years ago

Simplify the expression. Thanks yall, I'll give brainliest to the right answer

Alik [6]

Answer:

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Step-by-step explanation:

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2 years ago

Need help with question number 2

USPshnik [31]

Answer:

BC=20

AE= 18

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Step-by-step explanation:

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3 years ago

Select the correct properties of slope below.

Alinara [238K]

A. Lines that go up from left to right should have a positive slope.
B. Lines that go down from left to right should have a negative slope.
D. The slope of a steep line should be bigger than the slope of a flat line.
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3 years ago

Which function models the area of a rectangle with side lengths of 2x – 4 units and x + 1 units? What is the area when x = 3?

Bingel [31]

Answer:

Step-by-step explanation:

Length = 2x-4

Width = x+1

Let x=3 and find the length and width

Length = 2*3-4 = 6-4 =2

Width = x+1= 3+1 =4

The area is given by

A = l*w = 2*4 = 8

7 0

2 years ago