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hichkok12 [17]
3 years ago
8

NOW ASAP PLEASE NEED FAST ANSWERRRRRRRR

Mathematics
1 answer:
Elodia [21]3 years ago
5 0

Let's take any 2 points from the line.

1. (-4,-2)

2. (-2,-7)

slope  \\ =  \frac{Δy}{Δx}  \\  =  \frac{y_{2} - y_1}{x_{2} - x_1}  \\  =  \frac{ 7 - ( - 2)}{ - 2 - ( - 4)}  \\  =  \frac{5}{2}  \\ =  2  \frac{1}{2}   \\  = 2.5

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2) A box contains 9 red and 2 blue marbles and 3 yellow marbles. If you select oneat
Olin [163]

Answer:

red is more in value unlike the rest

8 0
3 years ago
What is the standard form of the equation of a line for which the length of the normal segment to the origin is 8 and the normal
jeka57 [31]
Slope of line = tan(120) = -tan(60) = - √3
Distance from origin = 8

Let equation be Ax+By+C=0
then -A/B=-√3, or
B=A/√3.
Equation becomes
Ax+(A/√3)y+C=0

Knowing that line is 8 units from origin, apply distance formula
8=abs((Ax+(A/√3)y+C)/sqrt(A^2+(A/√3)^2))
Substitute coordinates of origin (x,y)=(0,0)  =>
8=abs(C/sqrt(A^2+A^2/3))
Let A=1 (or any other arbitrary finite value)
solve for positive solution of C
8=C/√(4/3) => C=8*2/√3 = (16/3)√3

Therefore one solution is
x+(1/√3)+(16/3)√3=0
or equivalently
√3 x + y + 16 = 0

Check:
slope = -1/√3  .....ok
distance from origin
= (√3 * 0 + 0 + 16)/(sqrt(√3)^2+1^2)
=16/2
=8  ok.

Similarly C=-16 will satisfy the given conditions.

Answer  The required equations are
√3 x + y = ± 16 
in standard form.

You can conveniently convert to point-slope form if you wish.




4 0
4 years ago
Which number has two lines of symmetry?<br><br> 101<br> 619<br> 33<br> 18
7nadin3 [17]

33 in middle - and in between I

4 0
4 years ago
Malaya is standing directly between a 90-foot tall courthouse and a 54-foot tall bank. If the angle of elevation from the point
Alex

Answer:

Step-by-step explanation:

Draw a picture.

c and b are Malaya’s distance from the courthouse and bank, respectively.

tan(72°) = c/90

c = 90tan(72°)

tan(35°) = b/54

b = 54tan(35°)

Distance between courthouse and bank = c+b

= 90tan(72°) + 54tan(35°)

= 301.5 ft

3 0
3 years ago
A car travels 384 miles using 12 4/5
shepuryov [24]

Answer:

6/5 or 1.2

for this question

6 0
3 years ago
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