Find the discriminant of the quadratic equation, and determine the number of real solutions of the equation.

2x2 + 6x + 9 = 0

The discriminant is _____
The number of real solutions of the equation is _____

Answer:

The answer is 8%

From the given information, the sample proportion is 18% and a margin of error is 4 percent.

Then, a 90% confidence interval to estimate the population proportion is

(18 +/- 4)

(18-4, 18+4)

(14%, 22%)

22-14 = 8

Answer:

19,324

Step-by-step explanation:

The original amount is 100% of the original amount since 100% means a whole amount.

A 21% increase means that the new amount will be 100% + 21% = 121% of the original amount.

Now we calculate 121% of 15,970.

To find a percent of a number, multiply the percent by the number. First, divide the percent by 100 to change it into a decimal.

121% of 15,970 =

= 121% * 15,970

= 1.21 * 15,970

= 19,323.7

Answer:

19,324

Answer:

1/12

1/2 x 1/6 = 1/12

half of the numbers are even and 1/6 o the numbers is 3.

Step-by-step explanation:

The probability of rolling an even number and then a 3 is,

⇒ 1 / 12

The term probability refers to the likelihood of an event occurring. Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.

Now, the probability of rolling an even number on the first roll.

Then, There are three even numbers 2, 4, and 6 out of the 6 possible outcomes,

so the probability of rolling an even number on the first roll is,

= 3/6,

= 1/2

And, For the probability of rolling a 3 on the second roll.

There is only one outcome that will result in a 3 out of the six possible outcomes,

so the probability of rolling a 3 on the second roll is 1/6.

Now we can multiply the two probabilities together to find the probability of rolling an even number on the first roll and then a 3 on the second roll:

1/2 x 1/6 = 1/12

Hence, the probability of rolling an even number and then a 3 is,

⇒ 1 / 12

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Answer:

Step-by-step explanation:

A line has a positive slope if it is slanting upward, toward the right. A line has a negative slope if it is slanting upward, toward the left.

Mark As Brainlist Plz

Step-by-step explanation:

The line would be going up because when the slope is positive that the amounts are increasing, meaning when the slope is positive it’s going up and the opposite of when the slope is negative.

Answer:

The center is 3.

It is symmetric

The spread is from 1 to 5.

There were 14 commercial breaks.

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.  

Please have a look at the attached photo.  

My answer:

Given the information:

Let analyse all the answers:

1/ The center is 3 True

2/The peak is 5 Wrong, the peak is 3

3/ There are no gaps. Wrong because the gap is at 4 and 2

4/ It is symmetric. Yes

5/ It is skewed right. Wrong because it is symmetric.

6/ The spread is from 1 to 5. True

7/ There were 14 commercial breaks. Yes because the total number of dots is 14

Hope it will find you well.

Answer:

The center is 3.

It is symmetric

The spread is from 1 to 5.

There were 14 commercial breaks.

Step-by-step explanation:

Answer:

$7

Step-by-step explanation:

58-7.50x4=30 58-30=28/4=7

Answer:

1.5

Step-by-step explanation:

Since an object submersed in a fluid displaces its volume in fluid, you can calculate the volume of the ring by measuring how much water it displaces. When the ring is dropped in, the length and width of the container stay the same, while the height increases by 0.25. 0.25*3*2=1.5 cubic inches. Hope this helps!

Answer:

A≈143.17

Step-by-step explanation:

(happy to help)

Answer: 143.17

Step-by-step explanation: A = 1/2(l*w)

A = 1/2(286.34)

A = 143.17

Answer:

y = 0.5 cosine (4 (x - pi/2)) - 2

Step-by-step explanation:

Answer:

72 nickels

Step-by-step explanation:

First find the total price

.65+ 1.95+.99 = 3.59

The total price is 3.59

A nickel is worth .05 of a dollar

Divide the price by .05

3.59/.05

71.8

Round up

She will need 72 nickels

Answer:

2nd answer choice

Step-by-step explanation:

One way of doing this problem is to switch over to fractional exponents first.

The given product can be thought of as a square:

the square of (fifth root of 4x^2)

= [ fifth root of 4x^2 ]^2, or

= [(4x^2)^(1/5) ]^2, or

= [ (4x^(2/5) ]^2, or

=  16x^(4/5)                 This is equal to the 2nd answer choice.

Answer:

28 were senior citizens

A common denominator between 9 and 5 is 45.

4  ·5  20               2  ·9  18

9  ·5  45               5  ·9  45

20/45 + 18/45 is 38/45

38/45=x/180

solve for x

38  ·4= 152

45  ·4= 180

152 out of the 180 visitors were NOT senior citizens.

180-152=28

28 visitors were senior citizens

Hope this helped :)

Answer:

Subtract

Step-by-step explanation:

There is nothing but a rectangular hole on the triangle. Therefore, subtracting away a piece of the triangle.

Answer:

Add the area of a rectangle

Step-by-step explanation:

You would add a rectangle to the area of the triangle to fill in the missing hole(i think)

The correct answer is: A. -1.3, -1.2, 0.8, 0.9. Hence the correct option is a.

Start by comparing the negative numbers:

Since -1.3 is a smaller number than -1.2, we know -1.3 comes first.

Compare the negative numbers with the positive numbers:

All negative numbers are less than any positive number. Therefore, both -1.3 and -1.2 come before 0.8 and 0.9.

Compare the positive numbers:

Finally, compare 0.8 and 0.9. Since 0.9 is larger, it comes last.

Therefore, the order from least to greatest is: -1.3, -1.2, 0.8, 0.9. This corresponds to option A.

Complete and correct question:

Which of the following shows the numbers in order of least to greatest? 0.9, -1.2, -1.3, 0.8

A. -1.3, -1.2, 0.8, 0.9

B. -1.2, -1.3, 0.8, 0.9

C. 0.8, 0.9, -1.2, -1.3

D. 0.9, 0.8, -1.2, -1.3

Answer:

integer

Step-by-step explanation:

The answer is 3 which is a whole number so is also an integer and thus inturn a rational number.

An integer is the number zero, a positive natural number or a negative integer with a minus sign. The whole numbers are the numbers without fractions and it is a collection of positive integers and zero. rational numbers are numbers that can be represented as the quotient p/q of two integers such that q ≠ 0.

Given here, 15/5=3 and thus the number

3∈ whole numbers ∈Integers ∈rational numbers

Hence, The answer is 3 which is a whole number so is also an integer and thus inturn a rational number.

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To simplify the expression 5(2) x 5(5), we first calculate the result as 250. To rewrite this in the form 5n, we find a number n such that 5 times n equals 250, which is 50. Thus, the original expression can be written as 5(50).

The question asks to simplify the given mathematical expression. The expression is 5(2) x 5(5). When we multiply the numbers in each parenthesis with 5, it simplifies to 10 x 25, which equals 250 when multiplied together. This answer, however, is not in the form of 5n.

To rewrite the answer in form of 5n, we need to find a number that, multiplied by 5, equals to our answer, 250. This number is 50, because 5 times 50 equals 250.

Therefore, the expression 5(2) x 5(5) equals 250 and can be rewritten in the form of 5n as 5(50).

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Answer:

A & B)

Step-by-step explanation:

A)When you subtract the bottom equation from the top, x will be eliminated & you could found the value of y

B)When you add  the equations, y will be eliminated & you could find the value of x

Answer:

$24,580.12

Step-by-step explanation:

Lets use the compound interest formula to solve:

[tex]A=P(1+\frac{r}{n} )^{nt}[/tex]

P = initial balance

r = interest rate (decimal)

n = number of times compounded annually

t = time

First, change 14.8% into a decimal:

14.8% -> [tex]\frac{14.8}{100}[/tex] -> 0.148

Since the interest is compounded monthly, we will use 12 for n. Lets plug in the values now:

[tex]A=7,330(1+\frac{0.148}{12})^{12(10)}[/tex]

[tex]A=31,910.12[/tex]

Now subtract that number from our original amount invested:

[tex]31,910.12-7,330=24,580.12[/tex]

The dollars earned in interest is $24,580.12

Answer:

See the explanation for the answer.

Step-by-step explanation:

[tex]2x^2+7x+2=0[/tex]

[tex]x=\frac{-7\pm \sqrt{49-16}}{4}=\frac{-7\pm \sqrt{33}}{4}[/tex]

Hope this helps!

Answer:

x³ + x² + 4x + - 4

Step-by-step explanation:

Remove the parentheses and simplify.  Expand the negative sign for the second phrase in parentheses.

-x³ + 2x² - x + 2 + 2x³ + 5x - 1 - x² - 5

x³ + x² + 4x + - 4

Phytagoras Theorem :

b² = c² - a²

b² = 50² - 40²

b² = 2500 - 1600

b² = 900

b = √900

b = 30

So, the exact length of the third side is 30

Hope it helpful and useful :)

Explanation:

The volumes are in the ratio 3625:783 which reduces fully to 125:27 after dividing both parts by the GCF 29.

Both 125 and 27 are perfect cubes because 125 = 5^3 and 27 = 3^3

Therefore, the volume ratio 125:27 turns to the linear scale factor ratio 5:3

If you were to cube both sides of the linear ratio 5:3, you would get the volume ratio 125:27. Cube rooting both sides will have you go in reverse.

The measure of angle C is 38 degrees

Angles are the measure of space between intersecting lines or rays

The measure of the arc is given as:

Arc AB = 76 degrees

The angle at the center is half the angle at the circumference.

So, we have:

Angle C = 0.5 * 76 degrees

Angle C = 38 degrees

Hence, the measure of angle C is 38 degrees

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Answer:

A) 38

<C = 38

Step-by-step explanation:

Answer:

  see below

Step-by-step explanation:

Angles are named with the vertex listed in the middle of the three letters. For example, ∠AFB is formed by rays FA and FB. Point F is the vertex of the angle, where the rays meet.

Adjacent angles share a ray. Generally the shared ray will be the only ray between the other two rays identifying the angles. For example, ∠AFB and ∠BFC (or ∠CFB) are considered to be adjacent because shared ray FB is between rays FA and FC.

Given the names of two angles, you can look to see if any of the rays are shared.

Looking at the next answer choice, ∠AFB and ∠CFD we see that the rays involved in the first angle are FA and FB; in the second angle they are FC and FD. There are no common rays here, so these angles are not adjacent.

∠BFC and ∠CFD share ray FC. They are adjacent.

∠BFC and ∠DFE have no shared rays.

∠CFD and ∠DFE share ray FD. They are adjacent.

If we add pair D (6, 5) to the table, then it stops representing a function.

A relation is not a function if we can see that we have a input that is mapped into two (or more) different outputs.

Notice that in the table we already have an entry with the input x = 6, so we can't add another entry like:

(6, 5)

Because then, the table wouldn't be a function.

Then the correct option is D.

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Answer:

100 times as large

Step-by-step explanation:

If the base is 10, it is really easy to find this out.

First, what is the difference between 6 and 4? 2

Each higher exponent, the value multiplies by 10.

Remember that the the difference between the exponents is the number of zeros in the answer if the base number is 10.

2 zeros = 100

Answer:

The answer is B. hope this helps

Answer:

0.13 cents

Step-by-step explanation:

1.99 / 15 = 0.1326, rounded is 0.13

Answer:

this looks hard but x can mean area or other