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3 years ago

Points a, b, c are collinear. Point b is between A and C. AC=3x+3, ab=-1+2x, and BC=11. solve x.

Mathematics

1 answer:

romanna [79]3 years ago

5 0

X is 7. Hope this helps! Photo above

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Please help me with this math question

Arturiano [62]

Answer:

145

Step-by-step explanation:

168-23 = 145

i hope this helps :)

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1 year ago

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Line p has an equation of y=4/9x-3. Perpendicular to line p is line q, which passes through the point (3,-8). What is the equati

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4 years ago

Based on the information provided in the net worth statement , what was the net worth of this person for 12/31/2012?

Paraphin [41]

The correct answer for this is D

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3 years ago

The maximum value of the function: f(x)= -5 x ^2 +30x-200 is?

VARVARA [1.3K]

Answer:

$\displaystyle - 155$

Step-by-step explanation:

we are given a quadratic function

$\displaystyle f(x) = - 5 {x}^{2} + 30x - 200$

we want to figure out the minimum value of the function

to do so we need to figure out the minimum value of x in the case we can consider the following formula:

$\displaystyle x _{ \rm min} = \frac{ - b}{2a}$

the given function is in the standard form i.e

$\displaystyle f(x) = a {x}^{2} + bx + c$

so we acquire:

b=30
a=-5

thus substitute:

$\displaystyle x _{ \rm min} = \frac{ - 30}{2. - 5}$

simplify multiplication:

$\displaystyle x _{ \rm min} = \frac{ - 30}{ - 10}$

simply division:

$\displaystyle x _{ \rm min} = 3$

plug in the value of minimum x to the given function:

$\displaystyle f (3)= - 5 {(3)}^{2} + 30.3 - 200$

simplify square:

$\displaystyle f (3)= - 5 {(9)}^{} + 30.3 - 200$

simplify multiplication:

$\displaystyle f (3)= - 45 + 90- 200$

simplify:

$\displaystyle f (3)= - 155$

hence,

the minimum value of the function is -155

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3 years ago

Helpppppppppppppppppppplp

DENIUS [597]

Help in what ? I cant see the photo

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3 years ago