Find the zeros of r(x) = 8x2 + 4x +5.

Answer:

Below.

Step-by-step explanation:

The total number of marbles is 12.

Part A.

Prob(Red marble) = 5/12.

Part B.

Prob(pick 3 red marbles without replacement) = 5/12 * 4/11 * 3/10 = 1/22.

Part C.

The probability of the first being red is 5/12 because there are 5 red out of a total of 12 marbles. After that there are only 4 marbles and the total is 11 ( 1 marble less). Finally on the 3rd pick there are 3 red and a total of 10. WE then multiply these 3 probabilities.

Answer:

width of given rectangle = 6 cm

length of given rectangle =  4 cm

Step-by-step explanation:

Let the breadth be x cm

given that

The length of a rectangle is eight centimeters less than twice its width

length of rectangle in terms of x =  2(breadth ) - 8 =  2x - 8

we know perimeter of rectangle is given = 2(l + b)

thus, perimeter of given rectangle is = 2 ( x +  2x - 8) = 6x - 16

also given perimeter of the rectangle is 20 centimeters

thus,

6x - 16 = 20

6x = 20 + 16 = 36

x = 36/6 = 6

Thus,

width of given rectangle = 6 cm

length of given rectangle = 2*6 - 8 = 4 cm

Answer is C) y = 7x

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Answer:

the answer is 0.499 km I also used a calulator to double check.

Step-by-step explanation:

2x =15+5

2x =20

Divide by 2

X=10

Answer:

D, E

Step-by-step explanation:

2x-5=15,x=10

2x=20, x=5

2(x-5)=15, x=25/2

2x-20=0, X=10

4x-10=30, X=10

15=5-2x, X= -5

Answer:

A,D, and E

Step-by-step explanation:

The answers are A D and E

Answer:

10- 14 -4

Step-by-step explanation:

so practically what I was saying is 6 +4equals 10 and then 14minus10 equals 4

Answer:

x-6x=14-4

5x=10

X=10/5

X=2

Answer:

2.5*10^4

I hope this helps

Answer:

2.5 x 10^4

this is a filler. I hope this helps though :)))))

Answer:

The average change of temperature in one hour is -3

Step-by-step explanation:

You had to divide 36 by 12

Answer:

Dijonea have 8192  megabytes on her memory card

Step-by-step explanation:

Capacity of Tammy's memory card =  4-gigabyte

given that Dijonea buys a memory card with twice as much storage as Tammy’s

Thus,

Capacity of Dijonea's memory card =  2*Capacity of Tammy's memory card

Capacity of Dijonea's memory card =  2*4-gigabyte = 8-gigabyte

Given that

1 gigabyte = 1,024 megabytes

we have to find value of 8 gigabyte in terms of megabytes

for that we multiple both side in above equation by 8

1 *8 gigabyte = 1,024 *8 megabytes

8 gigabyte = 8192  megabytes

Thus, Dijonea have 8192  megabytes on her memory card

Answer:

D. d=6.9r

Step-by-step explanation:

Answer:

a,c,b

Step-by-step explanation:

Answer:

Acute Triangle

Step-by-step explanation:

Since all of the numbers are below 90 degrees, therefore, it makes it into an acute triangle.

Hope this helps! Stay safe!

Answer:

$0.68 per pound

Step-by-step explanation:

The price of sugar is $0.68 per pound.

A ratio indicates the number of times one number contains another.

Given that, the person paid $8.16 for 12 pounds of sugar.

Therefore, mathematically it can be written as:

12 pounds of sugar = $8.16

1 pound of sugar = $(8.16/12)

1 pound of sugar = $0.68

Hence, the price of sugar is $0.68 per pound.

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Answer:

4

Step-by-step explanation:

I am not 100% sure but it should be 4

The input values that corresponds to f(x) = 4 are -1 and 8.

The correct answers are A and G.

A relation between a collection of inputs and outputs is known as a function. A function is a connection between inputs in which each input is connected to precisely one output. Each function has a range, co-domain, and domain.

Given function:

f(x) = 4

To find the input value of x;

Let the function,

y = f(x)

4 = f(x)

That means, y = 4.

From the attached graph;

We interpreted two values

x = -1 and 9 where  f(x) = 4

Therefore, -1 and 9 are the values.

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Letters that have lines of symmetry is : I

Consider a plane. Let a design or shape on that plane. Now consider an axis. If we think of that axis as a mirror, and on the opposite side of that axis create the image of the shape, then if the shape's image looks exactly as the shape itself, then that shape is called to have a reflectional symmetry.

The lines of symmetry can be found as vertical or horizontal. Letters O, H, I. X have 2 lines of symmetry and other have 1.

At least one line of symmetry have letters:

A, B, C, D, E, H, I, M, O, T, U, V, W, X, Y ( you can choose one ).

The letter G has a no axis of symmetry and letter L has a horizontal axis of symmetry.

The letter I is the right one because it is a half and both look the same.

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Answer:

8

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

-7 squared is -49, -49 plus 49 is 0.

Answer: does, each input has two outputs

Step-by-step explanation:

Answer:

does represent a function because it intersects at more than one point, the relation is a function.

Step-by-step explanation:

You can tell whether a relation is a function by plotting the numbers on a graph and applying the vertical line test. If no vertical line passing through the graph intersects it at more than one point, the relation is a function.

Answer:

49

Step-by-step explanation:

a+87=136

a=136-87

a=49

Answer:

f(x) = x² - 5x + 6

Step-by-step explanation:

Given a root of a polynomial x = a then the factor is (x - a)

Here the roots are x = 3 and x = 2 , thus the corresponding factors are

(x - 3) and (x - 2)

The polynomial is then the product of the factors, that is

f(x) = (x - 3)(x - 2) ← expand using FOIL

      = x² - 5x + 6

Answer:

0>-7

true for all X

aka (-infinite, infinite)

Answer:

Values of y are:

2 1 -1

2 -1 -4

Answer:

243

Step-by-step explanation:

the reason why it's 243 is because 3 x 3 = 9, 9 x 3 = 27, and 81 x 3 = 243.

Answer: Step-by-step explanation: 243

Lets look at the difference between the first two numbers (3 and 9). to get from 3 to 9, we either have to multiply by 3, or add 6.

Next, let's look at the difference between 9 and 27. to get from 9 to 27, you have to multilpy by 3, or add 18.

If we conitnue to multiply the previous by 3, we get the following number, therefore we know the answer is to multiply by 3.

if we multiply 81 by 3, we get 243

Answer:

<2, <3, <6, and <7

Step-by-step explanation:

*Remember <4 and <8 are coungruent to each other since they are corresponding angles*

The solution is: in the expression (5w+3) the value of w is: w = -3/5.

Here, we have,

given that,

the expression is: (5w+3)

now, we have to find the value of w

so, we get,

we can find the value of w by making it equal to 0:

5w+3 = 0

<- subtract 3 from both sides

5w = -3  

<- divide 5 from both sides

5w/5 = -3/5

so, we have,

w = -3/5 is the final answer.

Hence, The solution is: in the expression (5w+3) the value of w is: w = -3/5.

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Answer:3

Step-by-step explanation:

Answer:

7.5 or 15/2 or 7 1/2 miles per hour

Step-by-step explanation:

If she runs 3/4 miles in 6 minutes, and six times ten is 60 minutes in in hour, then 3/4 times 10 would be 30/4 = 15/2 = 7 1/2 = 7.5

Answer:

The 3 in 743,857 is 27,000 less than the 3 in 735,957.

Step-by-step explanation:

in 743,857 the 3 is 3,000

in 735,957 the 3 is 30,000

30,000 - 3,000 = 27,000