4 years ago

What is -x squared+7x-6

Mathematics

1 answer:

sleet_krkn [62]4 years ago

5 0

Answer:

$y = (x - \frac{7}{2} ) {}^{2} + \frac{25}{4}$

Step-by-step explanation:

vertex form

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Simplify 125×t-⁴/5-³×625×t-⁸

barxatty [35]

Answer:

Step-by-step explanation:

$\frac{a^{m}}{a^{n}}=a^{m-n}\\\\a^{m}*a^{n}=a^{m+n}\\\\\frac{125t^{-4}}{5^{-3}}*625*t^{-8}\\\\=\frac{5^{3}t^{-4}}{5^{-3}}*5^{4}*t^{-8}\\\\=5^{3-[-3]+4}*t^{-4-8}\\\\=5^{3+3+4}t^{-12}\\\\=5^{10}t^{-12}\\\\=\frac{5^{10}}{t^{12}}$

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3 years ago

A particle starts at the point P=(−1,1,3)P=(−1,1,3) and moves along a straight line toward Q=(−4,4,5)Q=(−4,4,5) at a speed of 7

zvonat [6]

Answer: (-1,1,-3) + 7 x t x (3,-2,-8)/ $\sqrt{77} \\$

Step-by-step explanation:

The parametric vector equation for the position of particle is given as:

We have P= (-1,1-3)

Q= (-4,4,5)

So PQ vector= (-1+4,1-3, -3-5)

PQ = (3,-2,-8)

Magnitude of this vector= $\sqrt{(3)^2+(-2)^2+(-8)^2}$

Magnitude= $\sqrt{77} \\$

So unit vector= (3, -2, -8)/ $\sqrt{77} \\$

Now the equation is as:

P + 7 x t x unit vector = (-1,1,-3) + 7 x t x (3,-2,-8)/ $\sqrt{77} \\$

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3 years ago

In a certain country, the true probability of a baby being a boy is 0.514. among the next nine randomly selected births in the

Vadim26 [7]

The probability of a baby being a boy is 0.514.

Nine baby births are selected and we have to find the probability that at last one of them is a girl.

P(At least one out of 9 is baby girl) = 1 - P(No baby girl)

= 1 - P(All 9 are baby boy)

= 1 - (0.514)^9

= 1 - 0.0025

= 0.9975

The probability that at least one out of 9 selected births is baby girl is 0.9975

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4 years ago

What is 30 tens minus 3 tens 3 tenths

Nesterboy [21]

The answer to thus problem is 269. 7

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3 years ago

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Solve the expression for a=12 , b=6 and c=3

Maslowich

Answer:

Step-by-step explanation:

Substitute.

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3 years ago

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