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3 years ago

15

keisha weighs 100 pounds and gains 5 pounds per month. kyra weighs 130 and loses 2 pounds per month. after how many months will

they weigh the same weight

1 answer:

stira [4]3 years ago

4 0

Answer:?

Step-by-step explanation:

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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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A train moves at a constant speed. The train travels 13

Grace [21]

Answer:

1.86 Miles per hour

Step-by-step explanation:

13/7

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Alexeev081 [22]

Answer:

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The measure of central angle YCZ is 80 degrees

Vera_Pavlovna [14]

Answer:

The answer is 36 units2

Step-by-step explanation:

I took the test so I’m right

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Use function notation that describes the value of the function m at x

mr_godi [17]

Answer:

A function is a relation in which each possible input value leads to exactly one output value. We say “the output is a function of the input.”

The input values make up the domain, and the output values make up the range.

Step-by-step explanation:

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3 years ago