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Lostsunrise [7]
3 years ago
10

I need help with this equation can someone please help me

Mathematics
1 answer:
Vanyuwa [196]3 years ago
6 0

Answer:

d= 24

Step-by-step explanation:

-2= d/3 - 10

-6= d-30

-d=-30+6

-d= -24

d= 24

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What is the value of x ? round your answer to the nearest tenth .
djverab [1.8K]

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Step-by-step explanation:

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3 years ago
Find the discriminant and determine the nature of the roots to the quadratic equation
Katen [24]
№17
x^{2} +6x-7=0 \\ D=6 ^{2} -4*(-7)=36+28=64=8 ^{2}  \\  \\  x_{1} = \frac{-6+8}{2} =1 \\  \\  x_{2} = \frac{-6-8}{2} =-7
Answer: x₁ = 1
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№18
2 x^{2} -3x+4=3 \\ 2 x^{2} -3x+4-3=0 \\ 2 x^{2} -3x+1=0 \\  \\ D= -3 ^{2} -4*2=9-8=1 \\  \\  x_{1} = \frac{3+1}{2*2} = \frac{4}{4} =1 \\  \\  x_{2} = \frac{3-1}{2*2} = \frac{2}{4} =0.5
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№19
2 x^{2} -4x-5=0 \\  D=-4 ^{2} -4*2*(-5)=16+40=56 \\  \\  x_{1}= \frac{4+ \sqrt{56} }{2*2}  = \frac{4}{4} + \sqrt{ \frac{56}{16} } =1+ \sqrt{3.5}  \\  \\  x_{2} = \frac{4- \sqrt{56} }{2*2} = \frac{4}{4} -  \sqrt{ \frac{56}{16} } =1- \sqrt{3.5} 

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3 0
3 years ago
Draw a dot plot for the set of data.<br><br> 2, 5, 0, 1, 3, 2, 0, 2, 4, 3, 1, 3, 4, 2, 0
GREYUIT [131]
The answer would be the first one that starts with 3 zeros and 2 ones
5 0
3 years ago
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Hunter-Best [27]

Answer:

Step-by-step explanation:

(-7, 8) (-8, 8)

(y2 - y1) / (x2 - x1)

(8 - 8) / (-8 + 7)

0 / -1

the slope is 0

you could also see this because the y value doesn't change

if the y value doesn't change the slope is 0, if the x value doesn't change the slope is undefined

3 0
2 years ago
Read 2 more answers
What is an equation in point-slope form of the line that passes through (-7,1) and (-3, 9)
Inga [223]

Step-by-step explanation:

let eqn be y - y1 = m(x - x1)

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sub (-7, 1):

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therefore, the equation is y - 1 = 2(x + 7)

Topic: coordinate geometry

If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!

6 0
3 years ago
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