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3 years ago

Select the correct answer. 50 points better hurry and brainlyest for the one that answers first

Mathematics

2 answers:

Flauer [41]3 years ago

5 0

Answer:A point U

Step-by-step explanation:

Bad White [126]3 years ago

5 0

Answer:

Step-by-step explanation:

Under a reflection in the x- axis

a point (x, y) → (x, - y)

Under a reflection in the y- axis

a point (x, y) → (- x, y)

Hence

U(- 6.5, 1 ) → W(- 6.5, - 1) ← reflection in x- axis

W(- 6.5, 1) → V(6.5, -1) ← reflection in y- axis

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Someone please help

OLEGan [10]

Answer:

e= -2

Step-by-step explanation:

1) distribute so you get 6+0.75e=2-1.25e

2) move the variable to one side so you get 6+2e=2

3) subtract the 6: 2e=-4

4) divide by 2: e= -2

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3 years ago

The mean of a data set is 16. What is the absolute deviation of a data point at 19?

S_A_V [24]

Answer:

i need a set of numbers to do this

Step-by-step explanation:

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3 years ago

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Three security cameras were mounted at the corners of a triangles parking lot. Camera 1 was 110 ft from camera 2, which was 137

Nata [24]

Answer:

<em>Camera 2nd has to cover the maximum angle, i.e. </em> $78.70^\circ$ .

Step-by-step explanation:

Please have a look at the triangular park represented as a triangle $\triangle ABC$ with sides

a = 110 ft

b = 158 ft

c = 137 ft

1st camera is located at point C, 2nd camera at point B and 3rd camera at point A respectively.

We can use law of cosines here, to find out the angles $\angle A, \angle B, \angle C$

As per Law of cosine:

$cos C = \dfrac{a^{2}+b^2-c^2 }{2ab}\\cos B = \dfrac{a^{2}+c^2-b^2 }{2ac}\\cos A = \dfrac{b^{2}+c^2-a^2 }{2bc}$

Putting the values of a,b and c to find out angles $\angle A, \angle B, \angle C$ .

$cos C = \dfrac{110^{2}+158^2-137^2 }{2\times 110 \times 158}\\\Rightarrow cos C = \dfrac{12100+24964-18769 }{24760}\\\Rightarrow cos C =0.526\\\Rightarrow C = 58.24^\circ$

$cos B = \dfrac{110^{2}+137^2-158^2 }{2\times 110 \times 137}\\\Rightarrow cos B = \dfrac{12100+18769 -24964}{30140}\\\Rightarrow cos B = \dfrac{5905}{30140}\\\Rightarrow cos B =0.196\\\Rightarrow B = 78.70^\circ$

$cos A = \dfrac{158^{2}+137^2-110^2 }{2\times 158 \times 137}\\\Rightarrow cos A = \dfrac{24964+18769-12100}{43292}\\\Rightarrow cos A = \dfrac{31633}{43292}\\\Rightarrow cos A = 0.731\\\Rightarrow A = 43.05^\circ$

<em>Camera 2nd has to cover the maximum angle</em>, i.e. $78.70^\circ$ .

6 0

3 years ago

Plz help need helppppppp

e-lub [12.9K]

X+60 + 70 = 180 (straight line)
x+130=180
x= 180 -130
x=50

7 0

3 years ago

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The towns of Franklin and Chester post their populations on signs just outside of their towns. The signs are

Andre45 [30]

Answer:

year 13

Step-by-step explanation:

franklin's population is growing by 1000 people per year(5% of 20000 is 1000) and Chester is growing by 500 per year so at year 13 franklin will be at 32000 while Chester is at 31500

4 0

3 years ago