11. When calculating the discriminant, Isabel got -4 as an answer. She checked her work and it came out to -4
again. What does she know about the roots of the Quadratic?

The many times that  the electricity used in 1950 is more than 1902 scientific notation is 7.131 x 10.

The scientific notation can be described as the notation that have the  form  a x 10^b.

Given:

The use of electricity in the US in 1902  = 6.03 x 10^9 killwatt-hours

The use of electricity in the US in 1950 = 4.3 x 10^11 kilowatt-hours.

to calculate the number of times that  the electricity used in 1950 more than 1902, then we can ,make the division of 4.3 x 10^11 kilowatt-hours.

by 6.03 x 10^9 killwatt-hours as : \(\frac{4.3 * 10^11}{6.03 * 10^9}\)

then if we simply this we can have   7.131 x 10.

Therefore, option D is correct.

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Using the pοlygοn tοοl a rectangle with length 5 unit and width 3 units has been drawn

A rectangle is a type οf quadrilateral that has its parallel sides equal tο each οther and all the fοur vertices are equal tο 90 degrees. Hence, it is alsο called an equiangular quadrilateral. Since, the οppοsite sides are equal and parallel, in rectangle, therefοre, it can alsο be termed as a parallelοgram.

Using the pοlygοn tοοl a rectangle with length 5 unit and width 3 units has been drawn

check the attachment given belοw tο understand.

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Answer:

$13 per movie

Step-by-step explanation:

Each movie costed $13 because if Jessica had $95 to spend on 6 movies, and she had $17 after buying all of them, the 6 movies costed a total of $78, and 78 divided by 6=$13 per movie. Hope it helps!

Answer:

13

Step-by-step explanation:

95-17 = 78.

then divide 78 by 6 which equals 13

Answer:

Step-by-step explanation:

We can solve by means of a system of equations:

let x register $ 10

let y register $ 50

Now, we have:

10 * x + 50 * y = 1080

x + y = 28 => <x = 28 - y

replacing:

10 * (28 - y) + 50 * y = 1080

280 - 10 * y + 50 * y = 1080

40 * y = 1080 - 280

y = 800/40

y = 20

now for x:

x = 28 - 20

x = 8

which means that in total there are 8 register of $ 10 and 20 register of $ 50

Answer:

dfgrWHTNWEeneyjaayaeyneyan

Step-by-step explanation:

Answer:

12.57

Step-by-step explanation:

A=πr2=π·22≈12.56637km²

Answer:

Step-by-step explanation:

Vitamin c=3/4×cup of orange juice

EXPLANATION:

Given that :

R ={ (x-1),(x-2) ,x = (2,3,4,5)}

Put x = 2 then (2-1),(2-2) = (1,0)

Put x = 3 then (3-1),(3-2) = (2,1)

Put x = 4 then (4-1),(4-2) = (3,2)

Put x = 5 then (5-1),(5-2) = (4,3)

R = { (1,0),(2,1),(3,2),(4,3)}

Domain = {1,2,3,4}

Range = {0,1,2,3}

Answer:

123456

Step-by-step explanation:

it is pie 3.14 because it is

The true statement about the right rectangular prisms include:

It should be noted that a prism simply means a shape that has two identical shapes that face each other.

Here, the angles in the smaller prism measure 90 degrees and the perimeter of the rectangular bases changes by a factor of 2.

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Answer:

1,2, and 5

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

28 x 4=112

112 x 12= 1344

1344-875-330-130=9

Answer:

he will have $9 left over

Answer: B i think

Step-by-step explanation:

A term can be a number, a variable, product of two or more variables or product of a number and a variable. An algebraic expression is formed by a single term or by a group of terms.

9514 1404 393

Answer:

  (b)  all real numbers x ≥ 2

Step-by-step explanation:

The square root function is only defined for non-negative numbers. Then the domain of

  \(\sqrt{x-2}\)

will be x such that ...

  x -2 ≥ 0

  x ≥ 2 . . . . . . . . add 2

The domain is all real numbers x ≥ 2.

Answer:

Step-by-step explanation:

You want to know the number of pounds of each of Earl Gray and Orange Pekoe tea to make 600 pounds of mix that is valued at $4.50 per pound, if Earl Gray costs $5 per pound and Orange Pekoe costs $3 per pound.

Let x represent the number of pounds of Earl Gray tea in the mix. Then the value of the mix is ...

  5x +3(600 -x) = 4.50(600)

Simplifying, we have ...

  2x +1800 = 2700

  2x = 900 . . . . . . . . . subtract 1800

  x = 450 . . . . . . . . . divide by 2

  600 -x = 150 . . . find pounds of Orange Pekoe

The blend will consist of 450 pounds of Earl Gray, and 150 pounds of Orange Pekoe tea.

<95141404393>

Answer:

Step-by-step explanation:

x+2y=23

2x+3y=39

y = -1/2x + 23/2

y = -3/2x + 13

Add/Elimin method

-2x - 4y = -46

2x + 3y = 39

-y = -7

y = $7 student/child ticket

x +2(7)= 23

x + 14 = 23

x = $9 adult ticket

x= $9 adult ticket

y = $7 student/child ticket

Answer:

6+ 6+6+6

or

4+4+4+4+4+4

Step-by-step explanation:

6 (4 times)

4 (6times)

(brainlist please):D

Answer:

6+6+6+6   or 4+4+4+4+4+4

Step-by-step explanation:

You can add them out

We can conclude that with 95 percent confidence, the sample means will fall within the interval of approximately (0.9534, 0.9566).

To determine the interval within which 95 percent of the sample means will fall, we need to calculate the margin of error using the standard deviation and the desired level of confidence.

The formula to calculate the margin of error is given by:

Margin of Error = Z * (Standard Deviation / √n)

Where:

Z is the critical value corresponding to the desired level of confidence

Standard Deviation is the standard deviation of the population

n is the sample size

Since the sample size is 41 and we want to find the interval at a 95 percent confidence level, we need to find the critical value corresponding to a 95 percent confidence level.

The critical value can be found using a standard normal distribution table or a calculator. For a 95 percent confidence level, the critical value is approximately 1.96.

Now we can calculate the margin of error:

Margin of Error = 1.96 * (0.0050 / √41)

Calculating this, we find:

Margin of Error ≈ 0.001624

To find the interval within which 95 percent of the sample means will fall, we need to subtract and add the margin of error to the true mean:

Interval = True Mean ± Margin of Error

Interval = 0.9550 ± 0.001624

Calculating this, we find:

Interval ≈ (0.9534, 0.9566)

Therefore, we can conclude that with 95 percent confidence, the sample means will fall within the interval of approximately (0.9534, 0.9566).

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Answer: x < -18

Step-by-step explanation:

Simply multiply both sides by three to get x < -18

Step-by-step explanation:

x/3 < - 6

x < - 18

This should be the answer

Answer:

6 red tiles in the box

Step-by-step explanation:

Let's represent the red tiles as "R" and the blue tiles as "B". According to the given information, the ratio of red tiles to blue tiles is 3:5, which means for every 3 red tiles, there are 5 blue tiles.

Let's use a tape diagram to represent this situation:

R R R B B B B B

This represents 3 red tiles and 5 blue tiles, as per the given ratio.

It is also given that there are 12 more blue tiles than red tiles. So, we can add 12 more blue tiles in the tape diagram:

R R R B B B B B B B B B

Now, we can see that the difference between the number of blue tiles and red tiles is 12. Since the ratio of red tiles to blue tiles is 3:5, the difference between the two should be 2 (5 - 3 = 2). Therefore, 2 represents 12 tiles in the tape diagram.

Now, to find out how many red tiles are there, we can divide 12 by 2 (since the difference between the ratio is 2).

12 ÷ 2 = 6

So, there are 6 red tiles in the box.

Step-by-step explanation:

-2a + 2a + 7 = 8

Solving like terms

7 = 8

= 8 - 7 = 1

Has one solution

The value of y is 4√3

Similar triangles have the same corresponding angle measures and proportional side lengths. The corresponding angles of similar triangles are congruent or equal.

Also , the ratio of corresponding sides of similar triangles are equal.

There are two triangles that are similar

Therefore;

y /16 = 4/y

y² = 48

y = √48

y = √16 × √ 3

y = 4√3

Therefore, the value of y is 4√3

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Answer:

B

Step-by-step explanation:

the options A and B are the ones that make sense

to get rid of one of the options, you have to substitute.

lets try 6

5+ 3.5(6)= 5+21= 26

3+ 4(6)= 3+24 = 27

in that example, the Bowling Pin is the best deal for Tina

Now we can see that our fraction is 30/100, which means that 12/40 as a percentage is 30%.

hope this helps if so then please mark em brainliest

If not then i am very sorry

Answer:

447

Step-by-step explanation:

44+45+46+47+132+133

Answer:

x = (v - u) / a

Step-by-step explanation:

v = u + ax.

subtract u from both sides:

v - u = ax.

divide both sides by a:

(v - u) / a = x.

so x = (v - u) / a.

this can also be written v/a - u/a

Answer:

(0, 7), (1, 11), (2, 15)

Step-by-step explanation:

to find the y values, plug in the given x values into the equation y= 4x+7

when x = 0

y = 4(0) + 7

y = 0 + 7

y = 7

so the y value that corresponds to the x value 0 is 7 which is also written as (0,7)

when x = 1

y = 4(1) + 7

y = 4 + 7

y = 11

so the y value that corresponds to the x value 1 is 11; also written as (1, 11)

when x = 2

y = 4(2) + 7

y = 8 + 7

y = 15

so the x value 2 corresponds to the y value 15; also written as (2 , 15)

hope this helps

Answer:(0, 7), (1, 11), (2, 15)

Step-by-step explanation:

Answer:

\(Difference = \frac{13}{40}\)

Step-by-step explanation:

Given

\(Thursday = \frac{3}{8}\ mile\)

\(Tuesday = \frac{7}{10}\ mile\)

Required

How much farther is she on Tuesday

To do this, we simply calculate the difference between distance covered on both days.

\(Difference = Tuesday-Thursday\)

\(Difference = \frac{7}{10} - \frac{3}{8}\)

Take LCM

\(Difference = \frac{28- 15}{40}\)

\(Difference = \frac{13}{40}\)

Hence, she ran 13/40 mile farther on Tuesday

The author of the review is disappointed with the meatball sub casserole recipe posted on Recipe Masters, which did not turn out well despite following the recipe.

The author recommends that others should not attempt to make the recipe and believes that Recipe Masters should ensure that their posted recipes are reliable and thoroughly tested. The author also implies that the quality of the recipes on Recipe Masters is not as advertised, which could potentially lead subscribers to lose faith in the service and seek out free recipe sites instead.

Therefore, a suitable summary of the author's point of view would be: The author is dissatisfied with the meatball sub casserole recipe on Recipe Masters, which did not work out well and believes that Recipe Masters should provide reliable, thoroughly tested recipes as advertised.

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