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1 year ago

Evaluate 2b2 - 4a + 4a² for a = 3 and b = −8.

Mathematics

1 answer:

Vinvika [58]1 year ago

3 0

Answer:

152

Step-by-step explanation:

Let's evaluate your equation based on given information that a=3,b=−8

2(−8)^2−(4)(3)+4(3^2)

=152

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Simplify using order of operations 9 divided by 3 + 4 times 3 divided by 6

Alchen [17]

Answer:

$5$

Step-by-step explanation:

$1. \: 3 + 4 \times 3 \div 6 \\ 2. \: 3 + 12 \div 6 \\ 3. \: 3 + 2 \\ 4. \: 5$

7 0

2 years ago

I am running out of points!! Please help me!!

IceJOKER [234]

ANSWER

$165.6 \degree$

EXPLANATION

The measure of arc AC corresponds to 22% + 24%=46%

The complete angle of the circle is 360°.

Therefore the measure of arc AC is

$= \frac{46}{100} \times 360$

This simplifies to

$165.6 \degree$

The correct answer is A.

7 0

2 years ago

The position of a particle on the x-axis at time t, t > 0, is s(t) = ln(t) with t measured in seconds and s(t) measured in fe

Mrrafil [7]

Answer:

C.<em> </em><em>The quotient of the natural logarithm of 2 and e.</em>

Step-by-step explanation:

The position of a particle on the x-axis at time t, t > 0, is given by

$s(t) = \ln(t)$

with t is in seconds and s(t) is in feet.

The rate of change is,

= $\dfrac{f(b)-f(a)}{b-a}$

So rate of change of position or average velocity, for e ≤ t ≤ 2e will be,

$=\dfrac{\ln2e-\ln e}{2e-e}$

$=\dfrac{\ln2e-\ln e}{e}$

$=\dfrac{\ln\frac{2e}{e}}{e}$

$=\dfrac{\ln2}{e}$

Therefore, option C is the correct answer.

8 0

2 years ago

Read 2 more answers

5 The temperature on Janice's birthday is -10.6°C. Which absolute value equation BEST describes how many degrees below 0°C the t

il63 [147K]

None of them are the definite answer but D is the closest one. The other ones are completely wrong with or without the actual question. Brainliest pls

4 0

2 years ago

Find all the values of k so that the given points are 29 square units apart. (-5, 5) and (k,0).

Varvara68 [4.7K]

Distance formula between 2 points (x1,y1) and (x2,y2)

D= $\sqrt{(x1-x2)^{2}+(y1-y2)^{2}}$

D=29 and one point is (-5,5) and the other is (k,0)
sub

29= $\sqrt{(-5-k)^{2}+(5-0)^{2}}$
29= $\sqrt{(-5-k)^{2}+(5)^{2}}$
square both sides
841= $(-5-k)^{2}+(5)^{2}$
841= $(-5-k)^{2}+25$
minus 25 both sides
816= $(-5-k)^{2}$
square root both sides don't forget positive and negative roots
+/-4√51=-5-k
add 5 to both sides
5+/-4√51=-k
times -1 both sides
-5+/-4√51=k

the possible values for k are
k=-5+4√51 or k=-5-4√51

7 0

2 years ago