he line of symmetry for the quadratic equation y = ax 2 - 8x - 3 is x = 2. What is the value of "a"?

A. -2
B. -1
C. 2

Answer:The answer is B, step two

Step-by-step explanation:5x-6x equals to -1x

Answer:

The polynomial is  2 x² - 2x + 7

Step-by-step explanation:

Given polynomial

                   (8 x² + 9 ) - (6x² +2x +2)

           =   8 x² +9 - 6x² - 2x -2

          =    8x² - 6x² - 2x + 9-2

         =    2 x² - 2x + 7

The polynomial is   2 x² - 2x + 7

Answer:

y = 2x-7

Step-by-step explanation:

Point-slope equation for line of slope m that passes through (x₀,y₀):

y-y₀ = m(x-x₀)

y-1 = 2(x-4)

Put into slope-intercept form:

y = 2(x-4) + 1

y = 2x - 7

Answer:

about $3.00

Step-by-step explanation:

14.99 x 1/5 = 2.998

round it

3.00

Answer:

you would have 3.00

Step-by-step explanation:

round  it up

Answer:

48 square feet

Step-by-step explanation:

Given

Before expansion

[tex]A_1 = \frac{1}{2}bh[/tex] --- area of a triangle

[tex]A_1 = 16ft^2[/tex] --- value of the area

After the base and height were expanded, the area becomes:

[tex]A_2 = \frac{1}{2}BH[/tex]

Where

[tex]B = 2b[/tex]

[tex]H = 2h[/tex]

Substitute 2b for B and 2h for H in [tex]A_2 = \frac{1}{2}BH[/tex]

[tex]A_2 = \frac{1}{2} * 2b * 2h[/tex]

[tex]A_2 = \frac{1}{2} * 2*2*b*h[/tex]

[tex]A_2 = \frac{1}{2} * 4*b*h[/tex]

Rewrite as:

[tex]A_2 = 4 * \frac{1}{2} *b*h[/tex]

[tex]A_2 = 4 * \frac{1}{2}bh[/tex]

Recall that: [tex]A_1 = \frac{1}{2}bh[/tex]

So, we have:

[tex]A_2 = 4 * A_1[/tex]

Substitute 16 for [tex]A_1[/tex]

[tex]A_2 = 4 * 16[/tex]

[tex]A_2 = 64[/tex]

So, the area is [tex]64ft^2[/tex] after the dimensions were expanded

The area increased by:

[tex]Increment = A_2 - A_1[/tex]

[tex]Increment = 64 - 16[/tex]

[tex]Increment = 48[/tex]

It increased by [tex]48ft^2[/tex]

Answer:

50°

Step-by-step explanation:

the angles should add up to 180. there is a 90° angle abd a 40° angle which adds up to 130. 180-130 gives you rour missing angle if 50°.

Answer:

36 minutes

Step-by-step explanation:

360/10=36 (percent is division of the number)

Answer

she worked 1 week and 1 day

Step-by-step explanation

The FitnessGram PACER Test is a multistage aerobic capacity test that progressively gets more difficult as it continues.

Answer:

Step-by-step explanation:

Answer:

3/24 + 4/24 = 7/24

Step-by-step explanation:

Find a common denominator then multiply the numerator by how many times you multiplied the denominator and add them to get your answer and you may simplify.

Step-by-step explanation:

this is the answer of given question

Answer:

nsksnekwksnskswkwksks

Answer:

86 pieces

Step-by-step explanation:

Given

[tex]Pole = 500cm[/tex]

[tex]Pieces = 5.8cm[/tex]

Required

Determine the largest number of rods

To do this, we simply divide the length of the pole by the length of each piece.

[tex]Number = \frac{Pole}{Pieces}[/tex]

[tex]Number = \frac{500cm}{5.8cm}[/tex]

[tex]Number = \frac{500}{5.8}[/tex]

[tex]Number = 86.2068965517[/tex]

Round down

[tex]Number = 86[/tex]

With the knowledge that m∠1 = 81°, let's use these relationships to find the rest of the angles:

Answer:

Please find the ER model in the attachment file.

Step-by-step explanation:

Answer:

4/9

Step-by-step explanation:

it is parallel to it ;)

Answer:

(x+11)(x-11)

Step-by-step explanation:

(x+11)(x-11)

Answer:

(x+11)(x-11)

Step-by-step explanation:

If you factor it out, it works.

Answer:

The center is 4 because 4 is the value in the middle when all of the values are ordered from least to greatest.

Step-by-step explanation:

The center point lies in the middle of the data. This is the point where the midpoint of data set is located. In the given dot plot the data is in descending order and when the data is observed the middle value is 4. The middle value can be between 4 and 5 in case if the data set was observed according to class preference and frequency would have been given separately.

7(2)+7(5) {using distributive property}

14+35 {7 multiplied by 2 gives 14 and 7 multiplied by 5 gives 35}

49 {therefore 35+14 gives 49}

Answer:

We conclude that:

Step-by-step explanation:

Given the right-angled triangle ΔUWV, it is clear that

Using the trigonometric ratio, we know that

sin Ф = opposite / hypotenuse

cosecant Ф = 1/ sin Ф

Thus,

cosecant Ф = hypotenuse / opposite

substituting Ф = U,  hypotenuse = 26 and opposite = 24

cosecant (U) = 26 / 24

cosecant (U) = 13/12

Therefore, we conclude that:

Answer:

Median is 3

Mean is 2.8

Im 95% sure this is correct, though if you want to double check

To find the median you would line all the numbers in order from least to greatest, then usually I would draw lines connecting the first to the last until each is paired, if it is a single digit left over then it the median is that digit, it its two left then you add them together and divide by two for the median.

For the mean add all the numbers together and divide by the total number of numbers.

Step-by-step explanation: In your problem, we're finding the mean and median. Let's do it step-by-step.

1. To find the Median, we arrange the data in an ascending order and it's middle value. If the numbers of values is an even number (2, 4, 6, 8, 10), the median will be the average of the 2 middle numbers.

Therefore, the Median is 3.

2. The Mean is the set of numbers of the sum divided by the number of terms.

Therefore, the Mean is 2.8.

Answer:

Picture pls

Step-by-step explanation:

Answer:

Need more

Step-by-step explanation:

Answer:

Step-by-step explanation:

8.5x16=136

The question is incomplete. Here is the complete question.

Polygon LMNPQ is shown on the coordinate grid. What is the perimeter of polygon LMNPQ?

A. [tex]2+12\sqrt{2}[/tex] units

B. [tex]7+2\sqrt{2}[/tex] units

C. [tex]10+4\sqrt{2}[/tex] units

D. [tex]12+2\sqrt{2}[/tex] units

E. [tex]12+4\sqrt{2}[/tex] units

Answer: E. [tex]12+4\sqrt{2}[/tex] units

Step-by-step explanation: Perimeter of a figure is the sum of all of its sides.

The polygon is drawn on a plane. The distance between a pair of points will give that side its measure.

Distance of two points is calculated as

[tex]d=\sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}[/tex]

Segment MN:

Coordinates: M (2,4) and N (5,8)

[tex]d=\sqrt{(5-2)^{2}+(8-4)^{2}}[/tex]

d = 5

Segment ML:

Coordinates: M (2,4) and L (4,2)

[tex]d=\sqrt{(2-4)^{2}+(4-2)^{2}}[/tex]

[tex]d=2\sqrt{2}[/tex]

Segment NP:

Coordinates: N (5,8) and P (8,4)

[tex]d=\sqrt{(5-8)^{2}+(8-4)^{2}}[/tex]

d = 5

Segment PQ:

Coordinates: P (8,4) and Q (6,2)

[tex]d=\sqrt{(8-6)^{2}+(4-2)^{2}}[/tex]

[tex]d=2\sqrt{2}[/tex]

Segment LQ:

Coordinates: L (4,2) and Q (6,2)

[tex]d=\sqrt{(6-4)^{2}+(2-2)^{2}}[/tex]

d = 2

Calculating perimeter (P):

P = MN + ML + NP + PQ + LQ

P = [tex]5+2\sqrt{2}+5+2\sqrt{2}+2[/tex]

P = [tex]12+4\sqrt{2}[/tex]

Perimeter of polygon LMNPQ is [tex]12+4\sqrt{2}[/tex] units

Answer:

13

Step-by-step explanation:

Have a good day