3 years ago

Show work and answer #9

Mathematics

1 answer:

Kisachek [45]3 years ago

6 0

(4/5)-(3/8)=17/40 or 0.425 mile

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Elena L [17]

Answer:

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Step-by-step explanation:

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Tomtit [17]

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Len [333]

Answer:

$D=0$

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Step-by-step explanation:

Given a quadratic equation:

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3 years ago

Select the quadratic equation that has roots x=8 and x=-5

stellarik [79]

Step-by-step explanation:

Since, x=8 and x=-5 are the roots.

Therefore, (x - 8) & (x - 5) will be factors.

Hence, required quadratic equation can be given as:

$(x - 8)(x - 5) =0 \\ \\ \therefore {x}^{2} + ( - 8 - 5) x+ ( - 8) \times ( - 5) = 0 \\ \\ \therefore {x}^{2} + ( - 13) x+ 40= 0 \\ \\ \huge \red{ \boxed{ \therefore {x}^{2} - 13x+ 40= 0 }} \\ is \: the \: required \: quadratic \: equation.$

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2 years ago

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Dominik [7]

Answer:

x = 41/3

y = 199/3

Step-by-step explanation:

Solve using system of equations

x is smaller number, y is larger

eq1> y + 2 = 5x > y = 5x - 2

eq2> 80 = x + y > y = 80 - x

equate

80 - x = 5x - 2

Solving:

x = 41/3

y = 199/3

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2 years ago