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3 years ago

14

What is the slope of a perpendicular line to 3.2 + 4y = 9?

1 answer:

inysia [295]3 years ago

5 0

The answer would be Undefined

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1. Type mmnn using exponents.

kompoz [17]

Step-by-step explanation:

$\bold{1.}\\\\\ mmnn=m^2n^2=(mn)^2\\\\\bold{2.}\\\\3x=5+7\\3x=12\qquad\text{divide both sides by 3}\\x=4\\\\\bold{3.}\\\\\dfrac{x}{3}=7\qquad\text{multiply both sides by 3}\\x=21\\\\\bold{4.}\\\\0.5x=12\qquad\text{multiply both sides by 2}\\1x=24\\x=24\\\\\bold{5.}\\\\4x-6=2x+4\qquad\text{add 6 to both sides}\\4x=2x+10\qquad\text{subtract 2x from both sides}\\2x=10\qquad\text{divide both sides by 2}\\x=5$

$\bold{6.}\\\\3x^2\ for\ x=6\ /\text{put x = 6 to the expression}/\\\\3(6)^2=3(36)=108\\\\\bold{7.}\\\\3y^2+2y\ for\ y=3\ /\text{put y = 3 to the expression}/\\\\3(3)^2+2(3)=3(9)+6=27+6=33$

7 0

3 years ago

Read 2 more answers

PLEASE HELP! I really need to get this right

Naily [24]

Answer:

27.3

Step-by-step explanation:

27.3

8 0

2 years ago

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Please answerr will mark the brainliest!!!!

Pachacha [2.7K]

Answer:

Octagon ; Regular

Step-by-step explanation:

The polygon has 8 sides and all the sides are of equal measurement.

Hope this helped you!!

Please mark as Brainliest!!

6 0

3 years ago

Ella is making a kite in the shape of a triangular prism, but with both ends open. Which net shows the faces that

olga nikolaevna [1]

Answer:

the net of a triangular prism?

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

The following is the frequency distribution for the speed of a sample of automobiles traveling on an interstate highway. Speed (

svlad2 [7]

Answer:

Standard Deviation is 18.57 .

Step-by-step explanation:

We are given the frequency distribution for the speed of a sample of automobiles traveling on an interstate highway;

Speed (mph) Frequency (f) X X*f X - $Xbar$ $(X-Xbar)^{2}$

50 - 54 4 52 208 52 - 65 = -13 169

55 - 59 3 57 171 57 - 65 = -8 64

60 - 64 2 62 124 62 - 65 = -3 9

65 - 69 5 67 335 67 - 65 = 2 4

70 - 74 2 72 144 72 - 65 = 7 49

75 - 79 <u> 5 </u> 77 <u> 385 </u> 77 - 65 = 12 144

<u> ∑f = 21 </u> ∑X*<u>f = 1367 </u>

Mean of the data, $Xbar$ = $\frac{\sum Xf}{\sum f}$

= $\frac{1367}{21}$ = 65.09 ≈ 65 .

Now, Standard deviation, s = $\sqrt{\frac{\sum f*(X-Xbar)^{2} }{n-1}}$

s = $\sqrt{\frac{(4*169)+(3*64)+(2*9)+(5*4)+(2*49)+(5*144)}{6-1} }$ = $\sqrt{\frac{1724}{5} }$ = 18.57

Therefore, standard deviation is 18.57 .

5 0

3 years ago