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2 years ago

10

Is -1.2 a rational number

1 answer:

Taya2010 [7]2 years ago

5 0

Answer:

I don't think so

Step-by-step explanation:

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For the following right triangle, find the side length x.<br> Please help

Assoli18 [71]

Answer:

you have to time 15 ×8

Step-by-step explanation:

that is it

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3 years ago

65.4 x 2.3 SHOW WORK!!! plz

bagirrra123 [75]

Answer:

Hello so.

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Step-by-step explanation:

The Images I have attached show the work.

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2 years ago

Marianna just completed her findings in her investigation of the importance

Verizon [17]

Answer:

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Step-by-step explanation:

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3 years ago

Select the two values of x that are roots of this equation.<br> 2x+11x+15= 0

Amiraneli [1.4K]

Answer:

The roots of the equation are x=-3 and x=-2.5

Step-by-step explanation:

<u><em>The correct quadratic equation is</em></u>

2x^2+11x+15=0

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$ is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$2x^{2} +11x+15=0$

so

$a=2\\b=11\\c=15$

substitute in the formula

$x=\frac{-11(+/-)\sqrt{11^{2}-4(2)(15)}} {2(2)}$

$x=\frac{-11(+/-)\sqrt{121-120}} {4}$

$x=\frac{-11(+/-)\sqrt{1}} {4}$

$x=\frac{-11(+/-)1} {4}$

$x_1=\frac{-11(+)1}{4}=-2.5$

$x_2=\frac{-11(-)1}{4}=-3$

therefore

The roots of the equation are x=-3 and x=-2.5

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3 years ago

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NARA [144]

Answer:

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Step-by-step explanation:

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3 years ago