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3 years ago

What is the solution to the following equation x^2+5x+7=0

Mathematics

1 answer:

Nat2105 [25]3 years ago

6 0

Answer:

if ypu are looking for the minimum it is ( - 5/2 , 3/4) but if you are looking for the vertical intercept it is ( 0 , 7)

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What is the quotient of 8.7 & 0.6?

Stella [2.4K]

Answer:

Step-by-step explanation:

impossible to answer without knowing which is the divisor and which is the dividend.

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3 years ago

I’m totally confused can someone please help me!!!

german

The second answer is right

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3 years ago

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The height H of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 9

mariarad [96]

Answer:

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

Step-by-step explanation:

Statement is incorrect. Correct form is presented below:

The height $h(t)$ of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 feet per second is given by equation $h(t) = 3 +90\cdot t -16\cdot t^{2}$ , where $t$ is time in seconds. After how many seconds will the ball be 84 feet above the ground.

We equalize the kinematic formula to 84 feet and solve the resulting second-order polynomial by Quadratic Formula to determine the instants associated with such height:

$3+90\cdot t -16\cdot t^{2} = 84$

$16\cdot t^{2}-90\cdot t +81 = 0$ (1)

By Quadratic Formula:

$t_{1,2} = \frac{90\pm \sqrt{(-90)^{2}-4\cdot (16)\cdot (81)}}{2\cdot (16)}$

$t_{1} = 4.5\,s$ , $t_{2} = 1.125\,s$

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

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3 years ago

What is the GCF of 24a^3 b and 36ab^2? 2ab 4a^3b 12ab 72a^3b^2

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12ab will be the right answer.

Since 24a^3 = 12ab(2a^2)

And 36ab^2 = 12ab(3b)

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3 years ago

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Where are white blue and red boat in the Marina three fourths of the boats in the Marina are white for seventh of the remaining

xeze [42]

Answer:

Step-by-step explanation:

Here is the complete question used in answering this question :

Three-fourths of the boats in the marina are white. 4/7 of the remaining boats are blue , and the rest are red . If there are 9red boats, how many boats are in the marina?

We first have to determine the fraction of the boats that are red

1 - ( $\frac{3}{4}$ + $\frac{4}{7}$ )