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yKpoI14uk [10]
3 years ago
8

Helellpppp- BRAINIEST

Mathematics
1 answer:
fomenos3 years ago
8 0

Answer:

-8/3

Step-by-step explanation:

take the LCM and multiply by 8 both sides of the equation then u will get x+2x=-8 FINALLY X= -8/3 can be derived.

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What is the distance between the points (-30,10and(30,19) in the xy-plane
Alex787 [66]

Answer:

√3681

Step-by-step explanation:

D= √(30+30)^2+(19-10)^2

D= √60^2+9^2

D= √3600+81

D= 3681

5 0
3 years ago
Analyze the diagram below and complete the instructions that follow.
umka2103 [35]

Answer:

B. 4/5

Step-by-step explanation:

Sin = Opposite/Hypotenuse

Sin∠A = 8/10 = 4/5

8 0
3 years ago
Trigonometry help?? Thank you so much!!
liq [111]

Answer:

7) a = 60; b = 100

8) c = 20

9) d = 45

Step-by-step explanation:

7)

a + 120 = 180

a = 60

b + 80 = 180

b = 100

8)

5c + 4c = 180

9c = 180

c = 20

9)

3d + d = 180

4d = 180

d = 45

6 0
3 years ago
The time t required to drive a certain distance varies inversely with the speed r. If it takes 2 hours to drive the distance at
RUDIKE [14]
It is "C" about 1.71 hours
8 0
3 years ago
Brian correctly use a method of completing the square to solve the equation X a 2nd plus 7X -11 equals zero Brian‘s first step w
ArbitrLikvidat [17]

Answer:

(\frac{7}{2})^{2}

Step-by-step explanation:

Brain correctly use a method of completing the square to solve the equation:

x^2+7x-11=0

His First Step is to: Take the Constant Term to the Right Hand Side

x^2+7x=11

The Next Step Would be to:

  • Divide the Coefficient of x by 2
  • Square It
  • Add it to both Sides

In this case, the Coefficient of x  = 7

  • Divided by 2 = \frac{7}{2}
  • Squaring It, we have: (\frac{7}{2})^{2}

It is this number (\frac{7}{2})^{2} that is added to both sides in the manner below:

x^2+7x+(\frac{7}{2})^{2}=11+(\frac{7}{2})^{2}

6 0
4 years ago
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