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3 years ago

Simply the expression 9x+2y+6+9y+7

Mathematics

2 answers:

Diano4ka-milaya [45]3 years ago

5 0

9x+11y+13 Just add like terms

mestny [16]3 years ago

3 0

9y+11y+13 that’s the answer

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The line with equation a + 4b = 0 coincides with the terminal side of an angle θ in standard position and cos θ > 0. What is

ankoles [38]

Answer:

Option A. -( $\frac{\sqrt{17}}{17}$ )

Step-by-step explanation:

Equation of a given line is a + 4b = 0 or b = - $\frac{1}{4}a$

This in the form of y = mx + b, which is slope-intercept form.

Here slope of the line is ( $-\frac{1}{4}$ ).

Or tanθ = $\frac{(-1)}{4}$

This line coincides with the terminal side of the angle in standard position where cosθ > 0

Since tanθ = $\frac{\text{Height}}{\text{Base}}$

and sinθ = $\frac{\text{height}}{\txt{Hypotenuse}}$

Hypotenuse = $\sqrt{\text{height}^{2}+\text{Base}^{2}}$

= $\sqrt{(1^{2}+4^{2})}$

= $\sqrt{17}$

Since tanθ is negative and cosθ > 0 that means θ lie in fourth quadrant.

Therefore, sinθ will be negative.

[ $\frac{-sin\theta}{+cos\theta}=-tan\theta$ ]

sinθ = - $\frac{1}{\sqrt{17}}$

= - $\frac{1}{\sqrt{17}}\times \frac{\sqrt{17} }{\sqrt{17}} = -\frac{\sqrt{17}}{17}$

Answer will be option A.

6 0

4 years ago

If 2x+7 over 4 =5, what is the value of 6x

jekas [21]

Answer:

(2x+7)/4=5

2x+7 = 20

2x= 20-7

2x = 13

x = 13/2

6x =13/2×6

=13×3

=39

4 0

3 years ago

Pls answer asap, brainilest will be given to best answer, and best explanation.

juin [17]

Answer:

it should be D

Step-by-step explanation:

because A is going at y=30x, and B is slower than it. So there's only one choice that matches. which is y=15x

3 0

3 years ago

What is the answer to the question

N76 [4]

Answer:

180 cm squared

Step-by-step explanation:

Area Of A Rectangle is Length times Width, so 20 times 9, which equals 180.

8 0

2 years ago

27 in exponetial notation

docker41 [41]

Answer:

3^3

Step-by-step explanation:

3x3x3=27

7 0

3 years ago