Brandon buys a radio for $45.87 in a state where the sales tax is 7%.How much does he pay in taxes? If necessary, round to the nearest cent.

Answer:

[tex]k = 4[/tex]

Step-by-step explanation:

Given

[tex]4x^2 - 8x + k[/tex]

Required

Determine k if the expression is a perfect square

A quadratic is of the form;

[tex]ax^2 + bx + c[/tex]

Where (by comparison):

[tex]a = 4[/tex]     [tex]b = 8[/tex]     [tex]c = k[/tex]

If the above is a perfect square, then

[tex]k = \frac{b^2}{4a}[/tex]

Substitute values for a, b and c

[tex]k = \frac{8^2}{4*4}[/tex]

[tex]k = \frac{64}{16}[/tex]

[tex]k = 4[/tex]

Hence, k = 4

Answer:

2.5%

Step-by-step explanation:

The percentage of people taking the test who are above 698 is ___%

Empirical rule formula states:

95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ

From the question, we have:

Mean of 514 and a Standard deviation of 92

Hence:

μ ± xσ

514 ± 92x = 698

514 + 92x = 698

92x = 698 - 514

92x = 184

x = 184/92

x = 2

Hence, the data is correct and it is 2 standard deviation from the mean. Therefore, 95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ .

The question is asking us to find the percentage of people taking the test who are above 698 is calculated as:

100 - 95% /2

= 5/2

= 2.5%

The percentage of people taking the test who are above 698 is 2.5%

Answer:

The answer is 16 or 16.5

Step-by-step explanation:

To find the mean Add up all data values to get the sum.

Count the number of values in your data set.

Divide the sum by the count.

Answer:

Answer is : 16

Step-by-step explanation:

18+12+23+15+12=80

80 On the number of divided numbers

80/5=16

Answer:

352/9

Step-by-step explanation:

Answer:

x= -3

Step-by-step explanation:

you stupid

Answer:

x= -3

Step-by-step explanation:

its a bit easy..........................

Answer:

55 points

Step-by-step explanation:

If she scored 33 points in 3 games then she is scoring 11 points per game. If you multiply 11 and 5 you will get 55

Answer:

its pretty easy do it urself

Step-by-step explanation:

u just divided and mutiply

Answer:

b. expository

Step-by-step explanation:

Answer:

c. expository

Step-by-step explanation:

Answer:

A. 22.75 divided by 7 which would equal 3.25 B. the answer would be 3.25 for each cat toy

Step-by-step explanation:

If the volume is 804 yd^3 then the side length is 9.3m

Answer:

3.36 quarts of paint

Step-by-step explanation:

In this question, we're trying to find how much paint she will need to cover the night stand.

First, we need to find the area.

Solve for the area (rectangle = l * w):

42 · 28 = 1176

Now, we know that 1 quart of paint covers 350 square inches.

To find how much paint she needs, divide 1176 by 350:

1176/350 = 3.36

This means that she needs 3.36 quarts of paint to cover her whole nightstand.

3(x - 9) = 3

3x - 27 = 3

3x = 3 + 27

3x = 30

x = 30/3

x = 10

Answer:

Answer below. Hope this helped, Have a Great Day!!

Step-by-step explanation:

flip the 2x to the other side of the ( = )

y=8-2x

Divide by Y

y=-2x+8

slope: -2x

y-intercept: 8

Answer:

the allele for unattached earlobes is dominant over the allele for attached earlobes. In a population if “500 individuals”, 25 percent show the recessive phenotype. How many individuals would you expect to be heterozygous for this trait?

possible answers:

• 75

•125

•200

•25

Step-by-step explanation:

please mark me as brainliest

Answer:

what is brainwnnkj?

Step-by-step explanation:

Answer: Because we are finding the probability of selecting a number less than three, you are left with two options.   The answer would be either one, or two.

If you were to also use three it wouldn´t be correct because three is equivalent to three.

Step-by-step explanation:

Answer: 27, 60, 900, 987

Step-by-step explanation:

329

*   3

----------

   27

   60

900

--------.

987

Answer:

A) 55 + x ≤ 100

B) 55 + x ≤ 70

Step-by-step explanation:

A Explanation - Inequalities use signs < , > , ≤ , and ≥. We also know you have 100 seconds to beat the level, so you have to solve it in 100 or less, which tells us the 55 + the time left (x) must be less than or equal to 100. Solved will be attached.

B Explaination -

Like A, you can use the same setup, but switching a value. You already have the 55, you need 70. Or less points to ≤, same as before, so you can keep it the same, except with the 70 instead of the 100. Solved attached.

Answer:

the answer would be 0.9

Step-by-step explanation:

when rounding anything under 5 remains the same and anything over 5 rounds up to the next number. in this case three is less than five so the 9 would remain the same

Answer:

f(2.5)=3.5

Step-by-step explanation:

f(x)=2×2-3x+7

So,

f(2.5)=2×2-3×2.5+7

=4-7.5+7

=11-7.5

=3.5

Hope it will help you

Answer:

x= -9

Step-by-step explanation:

Answer:

The Answer is D

Step-by-step explanation:

12x + 10

Answer:

sorry I didn't know the answer

y =3

After you set each equation to terms where you can cancel out the x

you are left with:

14y = 42

y = 3

** sorry

Answer:

5

y

−

2.5

z

−

8

Step-by-step explanation:

−

6

z

−

5.5

+

3.5

z

+

5

y

−

2.5

Add  

−

6

z

and  

3.5

z

.

−

2.5

z

−

5.5

+

5

y

−

2.5

Answer:

− 25z+5y−8

Step-by-step explanation:

DIFFERENTIATE W.R.T. Z

−2.5

Answer:

X = 0 or X = -4

Step-by-step explanation:

4X(X + 4) = 0​

4 = 0 or X = 0 or X + 4 = 0

Since 4 = 0 is false, we eliminate that equation.

X = 0 or X + 4 = 0

X = 0 or X = -4

Answer:

1.17

Step-by-step explanation:

0.4+0.77 = 1.17

Answer:

B. negative

Step-by-step explanation:

it is on the negative side of the graph

Answer:

C.

Step-by-step explanation:

its c, undefined. remember that zero will be horizontal and undefined will be vertical like in this picture. hope this helped