HELP! Consider the quadratic equation x2+7x+8=0 . Which of the following is the correct form after substituting a, b, and c into the Quadratic Formula? Responses x=−7 ±(7)2−(1)(8)√2(1) x=−7 ±(7)2−(1)(8)√2(1) x=−7 ±(7)2−4(1)(8)√2(1) x=−7 ±(7)2−4(1)(8)√2(1) x=7 ±(7)2−4(1)(8)√2(1) x=7 ±(7)2−4(1)(8)√2(1) x=(7)2−4(1)(8)√2(1) 100 points!!

Answer:

73.75

Step-by-step explanation:

\(\mathrm{Multiply\:the\:numerator\:and\:denominator\:by:}\:1000\)

\(\frac{57820}{784}\)
\(\begin{matrix}\:\:\:\:\:\:\:\:\:\:\:\:\:\:\emptyspace7\:\:\:\:\:\:\:\:\:\:\:\:\:\:\\ 784\overline{|\smallspace57820}\:\:\:\:\:\:\:\:\:\:\:\:\\ \:\:\:\:\:\:\:\:\underline{\emptyspace5\emptyspace4\emptyspace8\emptyspace8}\:\:\:\:\:\:\:\:\:\:\:\:\:\:\\ \:\:\:\:\:\:\:\:\:\:\emptyspace2\emptyspace9\emptyspace4\emptyspace0\:\:\:\:\:\:\:\:\:\:\:\:\end{matrix}\)

\(\mathrm{The\:solution\:for\:Long\:Division\:of}\:\frac{57.82}{0.784}\:\mathrm{is}\:73.75\)

Hence, the correct answer is 73.75

Answer:

625.8

Step-by-step explanation:

your welcome

Answer:

625.8

Step-by-step explanation:

a tenth is the first decimal place after the decimal, if there's a five next to it then you can add a number to that place, but since both of the numbers next to the tenth are under 5, we don't add an extra number to it, making the answer 625.8

Answer:

Step-by-step explanation:

hello :

if x1 and x2 this zero for ax²+bx+c  you have : x1 = 1 /x2  means :x1 × x2 =1

but : x1 × x2 = c /a

in this exercice : a =8  and b = -13  and c = - 4k

so : c/a =-4k/8

so : -4k/8 = 1

-4k = 8        k = 8/-4      k = -2  

this polynomial is : 8x²-13x +8

Answer:

Step-by-step explanation:

i = prt (interest = principal x rate x time)

i = 2500 x 0.061 x 10

i = $1525 interest

balance = principle + interest

balance = 2500 + 1525

balance = $4025 balance

Answer:

3 1/5 inches

Step by Step Explanation:

4/5 * 4 = 16/5

16/5 as a mixed number is 3 1/5.

The answer is 3 1/5 inches hope this helps!!

Answer:

i would say 3  1/5

Step-by-step explanation

Answer:

x = -1

Step-by-step explanation:

3(x + 2) = 2x + 5

Use the distributive property on the left side.

3x + 6 = 2x + 5

Subtract 2x from both sides. Subtraction property of equality.

x + 6 = 5

Subtract 6 from both sides. Subtraction property of equality.

x = -1

Answer: 1

Step-by-step explanation: 3(x+2)=2x+5

                                               3x+6=2x+5

                                                -3x   -3x

                                                    6=1x+5

                                                     -5     -5

                                                       1=1x

The sales tax rate in Sacramento, California is 8.5%

sales tax can be found using the formula:

sales tax = Tax / Subtotal x 100%

Solving gives:

sales tax = 0.85 / 10 x 100%

sales tax = 8.5%

In conclusion, the sales tax rate is 8.5%.

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The perimeter of a rectangle with given length and width is 28 feet.

The perimeter of a rectangle is the total distance of its outer boundary. It is twice the sum of its length and width and it is calculated with the help of the formula: Perimeter = 2(length + width).

Given that, length of a rectangle = 8 feet and the width of a rectangle = 6 feet.

Here, perimeter= 2(8+6)

= 2×14

= 28 feet

Therefore, the perimeter of a rectangle is 28 feet.

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Since they take prices rather than setting them, fully competitive enterprises must deal with a completely elastic demand curve.

What is competitive firm?

A perfectly competitive firm is a price taker, which means that it must accept the equilibrium price at which it sells goods. If a perfectly competitive firm attempts to charge even a tiny amount more than the market price, it will be unable to make any sales.

Since they take prices rather than setting them, fully competitive enterprises must deal with a completely elastic demand curve. They are so unable to alter the market selling price. In order to raise its income, a perfectly competitive firm will therefore increase output rather than pricing.

A totally competitive firm is unable to arbitrarily set its output price since it must accept the price set by the product's market demand and supply. As an alternative, the perfectly competitive firm can decide to sell any amount of output for the same price. Because customers are eager to purchase any quantity of the company's output at the market price, it follows that the firm must deal with a completely elastic demand curve for its product. The quantity that the perfectly competitive firm decides to produce, combined with the prices that are in effect on the market for inputs and outputs, will determine the firm's total revenue, total costs, and eventually the level of profits.

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Answer:

He plans to drive it every day to work. The equation to the data is y = 20x + 30,000. How many miles does this car have when Mr. Dash bought .-by-step explanation:

Answer:

120 meters

Step-by-step explanation:

Bob's land is a rectangle, so it has 2 long and 2 short sides. The Long side is 40 meters long, and the short side is 20 meters long.

Let's add them: 40 + 20 = 60 meters

Since we have 2 of those sides, we will multiply it by 2 which we can demonstrate as

60 meters * 2 = 120 meters

Answer: (4,-5)

Step-by-step explanation:

8y = -40

(divide by 8)

y = -5

(plug it in to one of the equations)

3x + 6*-5 = -18

3x + -30 = -18

3x = 12

x = 4

Answer:

Step-by-step explanation:

Option A: ∠ BDC ≅ ∠ADB is the missing statement in the proof.

This statement is needed to complete the proof by showing that triangles ∆ABC and ∆ADB are similar by the AA criterion.

Answer:

Step-by-step explanation:

Answer:

(4,0)

Step-by-step explanation:

y intercepts must be on the y acis (0, x), so 4 would not be possible for a y intercept

Answer:

Step-by-step explanation:

let she have x non fiction books

ratio of fiction books to non fiction books is 7:4

7/4=182/x(do cross multiplication)

4*182=7*x

728/7=x

104=x

therefore she has 104 non fiction books

The number of non-fiction books read by Roxanne is 104.

A ratio is the relation between two numbers as a / b. A proportion is the equality of two ratios as a / b = c / d.

Ratio and proportion can be applied to solve Mathematical problems dealing with unit values of the quantities.

Given that,

The ratio of fiction books to non-fiction books is 7 : 4.

The number of fiction books is 182.

Suppose the number of non-fiction books be x.

Then, 7 : 4 = 182 : x

=> 7/4 = 182/x

=> x = (182 × 4)/7

       = 104

Hence, the number of non-fiction books read is 104.

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Solution'

To find the groups profit:

The formula for profit = Total income - Total cost

Cost of the muffin sales = since it cost $3.50 to bake a muffin

1 dozen = 12 (3.50) = $42

For a youth group of 15

The total cost of sales = 15 x 42 = $630

profit = total income - total cost

Profit = $1035 - $630

Profit = $405

Question 4: Laura applies for the position of ambulance medic. To give her a job simulation (behavioral interview) screening test, the interviewer...

This question involves providing a job simulation or behavioral interview, which allows the interviewer to observe how the candidate performs in a simulated work situation. This type of question assesses the candidate's skills, abilities, and behavior in a real or simulated work scenario, providing a more accurate evaluation of their capabilities for the job.

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Answer:

I think its $1000

Step-by-step explanation:

if she earned $12 the 1012-12=1000

Answer:

I really don't know much but this is what I know

If she has $12 dollars in interest and a year later she has $1012 making it so she earned EXACTLY $1,000 in the time being.

The value of x for the given quadratic expression is x = 5 ± √11.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given expression is 3(x-5)²=33. The value of x will be calculated as,

3(x-5)²=33

(x - 5 )² = 11

(x - 5 )  = ±√11

x = 5 ± √11

Therefore, the value of x for the given quadratic expression is x = 5 ± √11.

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The largest volume of the bag when an airline requires that the total outside dimensions (length width height) of a checked bag not exceed 77 inches is 16,513.72 inches³

the maximum volume can be calculate as follow :

let the length is L

L+W+W= 77

L= 77- 2W

so Volume, V = LWH

V= (77-2W) x W xW

V = 70 W²- 2W³

V' = 140 W- 6 W²

set to 0

140 W- 6 W² =0

factorize

W( 140- 6W) =0

split them

W= 0 or 140-6W =0

the width can't be 0 so we have,

140 = 6W

W = 23.33 inches

so the maximum volume is

V= LxWxH

V= (77-2W) x W xW

V =(77- (2) 23.33) x 23.33 x 23.33

V= 30. 34 x 23.33 x 23.33

V = 16,513.72 inches³

therefore, The largest volume of the bag is 16,513.72 inches³

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Greetings from Brasil....

From Pythagoras we have

AB² = AC² + BC²

13² = 12² + X²

Answer:

5 cm

Step-by-step explanation:

Pythagoras theorem gives us:

\(hypotenuse^{2} = side^{2} + side^{2}\)

We know the hypotenuse is 13 cm.

We know one side is 12 cm.

\(13^{2} = 12^{2} + side^{2}\)

\(169= 144 + side^{2}\)

Subtracting 144 from both sides:

\(25 = side^{2}\)

Reversing the sides:

\(side^{2}=25\)

\(\sqrt{side^{2}}= \±\sqrt{25}\)

\(side = \±\sqrt{25}\)

\(side = \±5\)

Since a distance can't be negative:

\(side=5\)

The third side is 5 cm.

Answer:

To find the total number of diagonals in a polygon, multiply the number of diagonals per vertex (n - 3) by the number of vertices, n, and divide by 2 (otherwise each diagonal is counted twice).

Step-by-step explanation:

Tasha can make 1 1/6 an improper number making 1 1/6=7/6. Then she can subtract 7/6-5/6, which is 2/6. Simplified 1/3.

Now it's not impossible! ;D

A frequency distribution in which high scores are most frequent is said to be positively skewed or right-skewed.

In statistics, skewness refers to the asymmetry of a probability distribution. A frequency distribution is said to be positively skewed or right-skewed if the majority of the data is concentrated on the right side of the distribution, while a few high values are outliers on the right tail. The frequency distribution will look like a graph that is shifted to the right with a longer tail on the right side.

Positive skewness means that the mean (average) of the data will be higher than the median (middle value). The median is a more robust measure of central tendency than the mean in a positively skewed distribution, because it is not influenced by the outliers on the right tail.

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The expression for the length of the sail is x = 7( tan 50° ).

According to the given question.

The sail of a boat is in the shape of a right triangle.

And, the sail of a boat is a right triangle with an acute angle at the tip equal to 50 degrees and the side of the sail which is the hypotenuse to the right triangle is 7 meters long.

Now, the side that measures 7 meters would be the adjacent because its right next to the angle and its not the hypotenuse because its not the largest side

And, the side which we do not know the length to will be the opposite side because it is opposite from where the angle is.  

So, we have the the measure of the adjacent side and the angle of the tip. And we have to find the expression for the length of the sail.

Let the length of the sail be x meters.

Now, in the given right angled triangle

We can say that

tan A = Opposite side/Adjacent side

⇒ tan 50° = x/7

⇒ x = 7( tan 50° )

Hence, the expression for the length of the sail is x = 7( tan 50° ).

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If you are considering speed regardless of direction, the average speed is:

(24 + 16) / 2 = 40 / 2 = 20mph

Although if direction matters, then one number has to be negative since the directions are opposite:

(24 - 16) / 2 = 8 / 2 = 4mph (in the positive direction)

Answer:

Proportional

Step-by-step explanation:

The line is going straight up, this means while x- intercept increase y- intercept also increases making it proportional.

The slope of the line is 3

The points are given as:

(1,-2) and (3,4)

The slope is calculated using:

\(m = \frac{y_2 -y_1}{x_2 -x_1}\)

This gives

\(m = \frac{4 + 2}{3 - 1}\)

Evaluate

m = 3

Hence, the slope of the line is 3

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Answer:

A screenshot of the graph is attached. :)