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4 years ago

Is the polynomial 4t-7 in standard form?

Mathematics

1 answer:

liraira [26]4 years ago

5 0

Answer:

Hi there!

The correct answer to this question is: yes.

Step-by-step explanation:

standard form means that the terms are ordered from biggest exponent to lowest exponent.

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Select the two values of x that are roots of this equation. x + 2x - 6 = 0

VLD [36.1K]

For this case we must solve the following quadratic equation:

$x ^ 2 + 2x-6 = 0$

Where:

$a = 1\\b = 2\\c = -6$

The solution is given by:

$x = \frac {-b \pm \sqrt {b ^ 2-4 (a) (c)}} {2a}$

Substituting:

$x = \frac {-2 \pm \sqrt {2 ^ 2-4 (1) (- 6)}} {2 (1)}\\x = \frac {-2 \pm \sqrt {4 + 24}} {2}\\x = \frac {-2 \pm \sqrt {28}} {2}\\x = \frac {-2 \pm \sqrt {2 ^ 2 * 7}} {2}\\x = \frac {-2 \pm2 \sqrt {7}} {2}\\x = -1 \pm \sqrt {7}$

Thus, we have two roots:

$x_ {1} = - 1+ \sqrt {7}\\x_ {2} = - 1- \sqrt {7}$

ANswer:

$x_ {1} = - 1+ \sqrt {7}\\x_ {2} = - 1- \sqrt {7}$

8 0

4 years ago

Solve the system of equations -x-2y=0 and -x+y=6 by combining the equations

Elden [556K]

Answer:

x=-4 and y=10

Step-by-step explanation:

Use the second equation to make y=x+6

sub y=x+6 into the first equation

-x-2*(x+6)=0

-x-2x-12=0

-3x-12=0

3x=-12

x=-4

Now sub x=-4 into the second equation

-(-4)+y=6

y=6+4

y=10

3 0

3 years ago

You babysit to make a little extra money. You charge $12 an hour and earned $180 by the end of the month. How many hours did you

BabaBlast [244]

Answer:

The equation is 12x=180. You worked for 15 hours.

Step-by-step explanation:

Do 12x=180 then divide by 12. You get x=180/12. Then simplify

4 0

3 years ago

Read 2 more answers

On a trip Dylan sees 125 vehicles with Montana plates and 40 with non-Montana plates. On the trip back, what is the experimental

DaniilM [7]

There is a
$\frac{25}{33}$
chance tht is is a car from montana

7 0

4 years ago

Read 2 more answers

Maria is monitoring the temperature of two substances in her science lab. Substance A is currently 96.2 and rising 1.4 each minu

lilavasa [31]

It would take 1.045 minutes for both substances to be at the same temperature.

Substance A started at a temperature of 96.2 and is rising at 1.4 every minute. Assuming minutes were denoted as x, the relevant expression would be:

= Starting temperature + (Rate temperature is rising x number of minutes)

= 96.2 + 1.4x

Substance B is reducing in temperature:

= 98.5 - 0.8x

Equate both expressions:

96.2 + 1.4x = 98.5 - 0.8x

1.4x + 0.8x = 98.5 - 96.2

2.2x = 2.3

x = 2.3 / 2.2

= 1.045 minutes

It would therefore take 1.045 minutes for both substances to be at the same temperature.

Find out more at brainly.com/question/12012659.

6 0

2 years ago