Help I will Mark A Brainlist !!!! Its A Math Question Find the length of a.

Thank you ao much !!! I hope you have a good day!

Answer:

  21

Step-by-step explanation:

You want the value of the expression 2f(-3)-f(4), given that f(x) = 3x²-x+ 5.

A function is evaluated by putting the argument where the variable is, and simplifying the result. Polynomials are often easier to evaluate if they are written in Horner form.

  f(x) = 3x² -x +5

  f(x) = (3x -1)x +5

The values we need are ...

  f(-3) = (3(-3) -1)(-3) +5 = (-10)(-3) +5 = 35

  f(4) = (3(4) -1)(4) +5 = (11)(4) +5 = 49

Then the expression of interest has the value ...

  2f(-3) -f(4) = 2(35) -49 = 70 -49

  2f(-3) -f(4) = 21

The option that correctly ranks the three boys in order from lowest to highest average speed is:

The average speed calculated is obtained by dividing the total distance covered by the total time taken. That said, we will obtain the average speeds for each of the boys as follows:

Terri = 3.95 km/48 min

= 0.082 km/min

Aaron = 2.65 km/31 min

= 0.085 km/min

Jamal = 6.50 km/81 min

= 0.080 km/min

When the results are obtained from lovwest to highest we will have:

0.080, 0.082, 0.085 which represent the figures for Jamal, Terri, Aaron.

Complete Question:

Terri, Aaron, and Jamal all walked along straight paths. Terri walked 3.95 km north in 48 min. Aaron walked 2.65 km west in 31 min. Jamal walked 6.50 km south in 81 min. Which of the following correctly ranks the three boys in order from lowest to highest average speed?

Learn more about average speed here:

https://brainly.com/question/4931057

#SPJ4

Answer: 4==> D

Step-by-step explanation:

b=1

|2b-5|+1=

|2(1)-5|+1=

|2-5|+1=

|-3|+1=       ==> Absolute value equations are always positive: |-x|=x, not -x.

3+1=4==> D

Answer:

Step-by-step explanation:

D 4

Answer:

Ans 39

Step-by-step explanation:

3a² + 2b c² if a = 1, b = 2, and c = 3.The answer is 39

The value of x from the given line segment is 5

A line is defined as the shortest distance between two points. From the given line segment, the addition below is true;

NM + ML = NL

Given

NM = 9

ML = 2x-7

NL = x + 7

Substitute to have:

9 + 2x - 7 = x + 7

2x + 2 = x + 7

2x-x = 7 - 2

x = 5

Hence the value of x from the given line segment is 5

Learn more on addition postulate here: https://brainly.com/question/2134445

#SPJ1

According  to the given data the slope mpq of the secant line pq  for the following values of x are :

The slope is defined as the proportion of both the vertical difference of two points, known as the rise, towards the horizontal change between those same two points, known as the run.

Calculate the values of two line points. Determine the difference in y-coordinates between these two locations (rise). Calculate the x-coordinate distinction between these two locations (run). Divide the x-coordinate variation (rise/run or slope) by the y-coordinate difference.

Slope(m) = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]

so,

m for x

3.333333 for 2.9

3.030303 for 2.99

3.003003 for 2.999

3.00030003 for 2.9999

2.727272 for 3.1

2.90297 for 3.01

2.997002 for 3.001

2.999700 for 3.0001

this shows that the  slope m for the required x.

To learn more about slope visit:

https://brainly.com/question/12929041

#SPJ4

I understand that the question you are looking for is:

The point P(3, −3) lies on the curve y = 3/(2 − x).

If Q is the point (x, 3/(2 − x)), use your calculator to find the slope m PQ of the secant line PQ (correct to six decimal places) for the following values of x.

i. 2.9 =

ii 2.99 =

iii. 2.999 =

iv.2.9999 =

v. 731

vi. 3.01

vii. 3.001

viii. 3.0001

a. Using the results of part (a), guess the value of the slope m of the tangent line to the curve at P(3,-3)

b. Using the slope from part (b), find an equation of the tangent line to the curve at P(3,- 3).

Answer:

Equation: 0.11x + 0.05(10500 - x) = 945

$7000 was invested at 11% and

$3,500 was invested at 5%

Step-by-step explanation:

There are two equations needed

Let x = amount of money invested at 11%
11% = 11/100 = 0.11 in decimal
Interest at 11% for 1 year = 0.11x

Amount of money invested at 5% interest. 5% = 0.05

= 10500 - amount invested at 11%= 10500 - x

Interest from this amount after 1 year = 0.05(10500 - x)

Total of these two = 945

So 0.11x + 0.05(10500 - x) = 945

The equation based on the information as it is given:

0.11x + 0.05(10500 - x) = 945

We know the total interest obtained was $945 so we have the equation
0.11x + 0.05(10500- 5x) = 945

Simplify

0.11x  + (525 - 0.05x) = 945
==>0.11x + 525 - 0.05x = 945

==> 0.06x = 945 - 525

==> 0.06x = 420

==> x = 420/0/06 = $7000

Amount invested at 11% interest is $7,000

Amount invested at 5% interest = 10,500 - 7,000 = $3,500

Clyde and Mason are 432 mi apart from each other in distance.

We are given that:

Clyde and mason can each leave a rest area on the Florida turnpike.

Clyde travels north whereas Mason travels south.

After 4 hr., we get that Clyde has gone 248 mi and Mason, due to the heavy traffic he got , traveled only 184 mi.

We need to tell how far are they from each other.

We will do this by addition.

Distance = 248 mi + 184 mi

Distance = 432 mi.

Therefore, we get that, Clyde and Mason are 432 mi apart from each other in distance.

Learn more about addition here:

https://brainly.com/question/25421984

#SPJ9

The numerical value in this sentence, "the average price of a house in the new subdivision is $257,000" describes a Population Parameter.

A population parameter is a figure that describes a fact about a whole population. In this sentence, we can see that the figure quoted is representative of an entire population. A sample statistic, on the other hand, describes something about a part of a population.

So, for the statement above, we can see that the average price is representative of all the houses in the new subdivision. Thus, the figure is a population parameter.

Learn more about population parameters here:

https://brainly.com/question/2292917

#SPJ4

[tex]4x - 29 = 13 + 6 + 2x - 18 \\ 4x - 2x = 13 + 6 - 18 + 29 \\ 2x = 30 \\ x = \frac{30}{2} \\ x = 15[/tex]

Answer:

Step-by-step explanation:

13 + 6 + 2x - 18 = 4x - 29

2x + 1 = 4x - 29

1 = 2x - 29

30 = 2x

15 = x

Answer:

the side of a cube is 5 cm.

Total surface area of cube =6× (side)

2

=6×5×5

=150

∴ The total surface area of cube is 150 cm

2

Step-by-step explanation:

Sorry I I don't have much time to answer the rest

Answer:

1/2

Step-by-step explanation:

x - 2y = 4

2y = x - 4

y = 1/2x - 2

If two lines are parallel, their slopes are equal => slope will be 1/2

Answer: 1/2

Step-by-step explanation:

i had this equation and it gave me this answer. i got y’all trust

Answer:

29

Step-by-step explanation:

6C - B substitute in 6 for C and 7 for B

6(6) - 7

36 - 7

29

For a real number a, a + 0 = a: TRUE

For a real number a, a + 0 = a:

Therefore, the statement "for a real number a, a + 0 = a" is TRUE.

Know more about real numbers here:

https://brainly.com/question/2515651

#SPJ1

Answer:

Step-by-step explanation:

96 strikeouts in 80 innings

Answer: x=6

Step-by-step explanation: (x+54)+5x=90 -> 6x+54=90 -> 6x=36 -> x=6

you know it equals 90 because it's on a 180 and there's a right angle.

simplify the equation to 6x+54=90, subtract 54 from 90, and divide by 6 to isolate x.

-25 is an integer and a rational number.

Now,

Hence, -25 is an integer and a rational number.

To learn more about number system, refer to the link: https://brainly.com/question/13162939

#SPJ4

The digit 8 in Carla’s number represents 10 times of what the digit 8 represents in Travis’ number.

The number written by Carla = 814,247

The number written by Travis = 683,571

The place value of digits starting from left is ones, ten's, hundreds, thousands, ten thousand, hundred thousand and so on.

As per this sequence of values, we can see that digit 8 in Carla's number is at hundred thousand place value. Also, digit 8 in Travis' number is at ten thousand place value. So, representing these place value in numeral form and finding the number of times one is greater than other.  

Digit 8 in Carla's number: 100,000

Digit 8 in Travis' number: 10,000

Finding the answer -

Value = 100,000 ÷ 10,000

Cancelling common zeroes from numerator and denominator

Value = 10

Hence, digit 8 in Carla’s number represents 10 times of what the digit 8 represents in Travis’ number.

Learn more about place value -

https://brainly.com/question/24170327

#SPJ4

The correct question is -

Carla wrote this number: 814,247

Travis wrote this number: 683, 571

The digit 8 in Carla’s number represents how many times what the digit 8 represents in Travis’ number?

A. 10

B. 100

C. 1000

D. 1/10

Answer: GoodMorning: )✨Ok so We should Know that The top number in a fraction is always considered a numerator, and that It shows the number of parts we have. The bottom number in a fraction is considered a denominator. It shows the total number of parts into which anything is divided. For example, in the fraction 8/7, 8 is the numerator and 7 is the denominator.

Step-by-step explanation:  Like In this fraction 7/3, 7 is the numerator and 3 is the denominator. In the fraction 9/7, 9 is the numerator and 7 is the denominator.The value placed above the horizontal line in a fraction is called a numerator. It signifies the number of parts taken out of the whole. The numeric value below the vinculum of a fraction is called the denominator. It represents the total number of equal parts as a whole. Hope this helps: )

Have A Nice Day: )

Answer:

A numerator is a value on the upper character set of a rational or fraction value and a denominator is the downer

[tex]{ \rm{fraction = \frac{numerator}{denominator} }} \\ [/tex]

For example;

Three quarters

[tex]{ \rm{ = \frac{3}{4} }} \\ [/tex]

3 is numerator and 4 is denominator

Answer:

all real numbers

Step-by-step explanation:

the arrows show that it is continuing therefore it is all real numbers

The probability that a set of all bulbs work is 0.88.

The total probability rule (also known as the Law of Total Probability) divides probability calculations into discrete steps.

Now, as per the question;

The total number of bulbs be 120 and each bulb is working as independent event.

The reliability of each bulb is 99.9% = 0.999

Let 'p' the probability the bulb will work.

The probability that all will work = p¹²⁰

The probability that all will work = (0.999)¹²⁰ = 0.886

Thus, the probability that all bulb will work is 88.6%.

To know more about independent event, here

https://brainly.com/question/1374659

#SPJ4

The prediction method Linear Extrapolation is the method used to estimate a point on a line when the point does not lie between the given points.

Using the equation of a line to obtain a new data point based on an existing collection of data points is known as linear interpolation in mathematics.

Now,

Since it employs a linear model to forecast the necessary point that does not reside between the given locations, this prediction technique is known as linear extrapolation.

Hence, The prediction method Linear Extrapolation is the method used to estimate a point on a line when the point does not lie between the given points.

To learn more about linear extrapolation, refer to the link:

https://brainly.com/question/16171310

#SPJ4

Answer:

crying -adjective. mending -noun. envying -verb.

Step-by-step explanation:

since an adjective is a word naming an attribute of a noun, the word cry is a noun and so the action being carried out "crying" is an adjective.

a noun is a word used in identifying a person, place or thing. and mending is a... you get the idea?

Batting common is the the wide variety of runs scored via way of means of the batsman withinside the wide variety of fits performed via way of means of him in that supply weeks Walk to strike out is the wide variety of wickets taken via way of means of the sports activities character withinside the wide variety of fits performed via way of means of him in that week Home runs are the house run hit via way of means of that participant in that 5 weeks throughout which the sports activities creator cited these types of happenings

The number of hits A got is 186 hits.

​A player's batting average is calculated by dividing the number of hits by the number of at-bats.

Player A batting average =  0.312

Number of at-bats A did =  596

We have to find the number of hits A got.

0.312 = Number of hits / 596

Number of hits = 0.312 x 596

                        = 185.952 hits.

Rounding to a whole number we get,

= 186 hits

Thus, the number of hits A got is 186 hits.

To know more about hits , visit :

https://brainly.com/question/12147247

#SPJ4

The graph of the given linear function can be seen in the image below.

Here we want to graph the line:

y = 3x - 2  (I think this is the line, the image is really blurry).

To graph this line (or any line, actually) what you need to do is find two points on the line.

To do so, you need to evaluate the function.

If we use x = 0, then:

y = 3*0 - 2 = -2

So we have the point (0, -2)

If we use x = 1, then:

y = 3*1 - 2 = 1

So we have the point (1, 1)

Now just graph these two points, and then draw a line that passes through both of them, you should get something like the image below.

If you want to learn more about linear functions:

https://brainly.com/question/4025726

#SPJ1

Answer:

No solution

Step-by-step explanation:

You can solve this in a few ways. One way is to graph the equation, and the solution is the x-value of the point of intersection. Another way would be to factor, which is more difficult to complete with a square bigger than 2.

By graphing, you can see a parabola that never touches that x-axis, which means no solution.

Answer:

y = 1/3x + 3

please correct me if I'm wrong

Answer:

Step-by-step explanation:

200/250 =0.8

25.5x0.8 =20.4

answer=20.4