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Harlamova29_29 [7]
3 years ago
8

Simplify cos2x tan2(-x)-1 / cos2x

Mathematics
1 answer:
PtichkaEL [24]3 years ago
6 0
-x sec(2) sin (2)cos(2x)-sec(2x)
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Consider the expression (3x+7)(3x+2)
Nastasia [14]

Answer:

a. shown below

b. 9x+14

Step-by-step explanation:

a. (on the bottom)

b. (3x+7)(3x+2)

multiply the terms:

9x+14

thats the area

6 0
4 years ago
Write the given trinomial if possible as a square of a binomial or as an expression opposite to a square of a binomial: 15ab-9a^
MrMuchimi

Answer:

- \bigg(3a -  \frac{5}{2} b) \bigg)^{2}

Step-by-step explanation:

15ab-9a^2-6  \frac{1}{4} b^2 \\  \\  = 15ab-(3a)^2-\frac{6 \times 4 + 1}{4} b^2 \\  \\ = 15ab-(3a)^2-\frac{24+ 1}{4} b^2 \\  \\ = 15ab-(3a)^2-\frac{25}{4} b^2 \\  \\   = 15ab- (3a)^2- \bigg(\frac{5}{2} b \bigg)^2  \\  \\ =  -  \{ - 15ab + (3a)^2 +  \bigg(\frac{5}{2} b \bigg)^2  \} \\  \\ =  -  \{ (3a)^2 +  \bigg(\frac{5}{2} b \bigg)^2 - 15ab  \} \\  \\  =   - \bigg(3a -  \frac{5}{2} b \bigg)^{2}

3 0
3 years ago
Triangle A″B″C″ is formed using the translation (x + 0, y + 2) and the dilation by a scale factor of 2 from the origin. Which eq
labwork [276]

Answer:

C.Segment AC=Segment A''C'' over 2

Step-by-step explanation:

We are given that

Dilation scale factor=2

A=(-3,3)

B=(1,-3)

C=(-3,-3)

We know that in dilation the size of figure change  

Ratio of length of new segment to the length of segment of original figure=Scale factor

\frac{A''C''}{AC}=2

AC=\frac{A''C"}{2}

Option C is true.

C.Segment AC=Segment A''C'' over 2

3 0
3 years ago
Read 2 more answers
What is the product of (y + 3) and (7y – 1)?
Lorico [155]

Answer: =7y^2+20y−3

Step-by-step explanation:

4 0
3 years ago
What is 5 x 2 + 3 to the power of 2
aleksley [76]
5*2 = 10

3^2 = 3*3 = 9

10 + 9 = 19

Answer: 19
5 0
3 years ago
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