Really need help!
Graph the equation y =x²
+ 4x - 5 on the accompanying set of axes. You must plot 5 points including the roots and the vertex. Using the graph, determine the roots
of the equation x² + 4x − 5 = 0.

Answer:

Match

1) 5 hours = H. 300 minutes

2) 72 hours = D. 3 days

3) 360 seconds = G. 6 minutes

4) 540 minutes = J. 9 hours

5) 4 days = A. 96 hours

6) 60 minutes = C. 1 hour

7) 720 seconds = 12 minutes

8) 6 days = E. 144 hours

9) 3 1/2 hours = F. 210 minutes

10) 3 minutes = I. 180 seconds

Equivalent times:

11) 7 hours = 420 minutes

12) 480 = 6 minutes

13) 120 hours = 5 days

14) 180 minutes = 3 hours

15) 11 minutes = 660 seconds

Answer:

It's D.

Step-by-step explanation:

I know I can't see that option, but it's D. If you use A for the first one, you get 4(-4) which is -16 and you add 3 to that, it's -12, so that's not 2 so it can't be A. If you use B for the first one, you get 2(-4) which is -8, and if you add 3, you get -5, not 2, so it can't be that either. If you use C, you get 0.5(-4) which is -2, and if you add 3 to that, you just get 1, so it can't be C either. I assume there is fourth option, so it's D.

The two equations for this system are C = 0.60f + 15 and C = 0.80f + 13.

The number of fish for which the cost is the same is 10 fishes.

The cost of this fish is equal to $21.

In order to write a system of linear equations to model and describe this situation, we would assign variables to the number of fish and the cost of fish respectively, and then translate the word problem into algebraic equation as follows:

Note: 1 dollar is equal to 100 cents.

Since the starter aquarium kit costs $15 plus 60 cents per fish at wet pets, we have:

C = 0.60f + 15     ........equation 1.

Since the starter aquarium kit costs $13 plus 80 cents per fish at gills and frills, we have:

C = 0.80f + 13          ........equation 2.

Next, we would solve the system of equations as follows:

0.80f + 13 = 0.60f + 15

0.80f -0.60f = 15 - 13

0.20f = 2

Number of fish, f = 2/0.20

Number of fish, f = 10 fishes.

From equation 1, we have:

Cost of fish, C = 0.60f + 15

Cost of fish, C = 0.60(10) + 15

Cost of fish, C = 6 + 15

Cost of fish, C = 21 dollars.

Read more on equation here: brainly.com/question/18912929

#SPJ1

the relationship is a function because she "made up time".

A relation that states that there should only be one output for each input are called a function. alternatively, a function is a particular kind of relation—a set of ordered pairs—that adheres to a specific rule—each X-value should be associated with only one y-value.

if a relation is one-to-one or many-to-one it is a function.

Function            Not a Function

one-to-one        many-to-many

many-to-one     one-to-many

In the above-mentioned scenario, She basically made up for the time she had spent standing at the location by increasing her pace. Since she picked up the pace, you can assume that she completed the task in the same amount of time as if she had not stopped.

Know more about relations and functions here: https://brainly.com/question/6241820

#SPJ4

Answer:

235.15 sq.cm

Step-by-step explanation:

Perimeter of a triangle is sum of all three sides.

    Ratio of sides = 5 : 6 : 7

Sides are 5x , 6x , 7x

  Perimeter = 72 cm

5x + 6x + 7x = 72

Combine like terms.

             18x  = 72

Divide both sides by 18,

                x = 72÷ 18

               x = 4

5x = 5*4 = 20 cm

6x = 6*4 = 24 cm

7x = 7*4 = 28 cm

Sides: 20cm , 24 cm , 28 cm

So, it is a scalene triangle.

   To find the area of scalene triangle use Heron's formula.

a = 20 cm  ; b = 24 cm and c = 28 cm

   [tex]\sf s = \dfrac{a + b+ c}{2} \ where \ s \ is \ the \ semi \ perimeter.[/tex]

      [tex]\sf =\dfrac{72}{2}\\\\\\ = 36 \ cm[/tex]

    s - a = 36 - 20 = 16 cm

   s -b   = 36 - 24 = 12 cm

   s - c  = 36 - 28 = 8 cm

          [tex]\sf \boxed{Area = \sqrt{s(s-a)(s-b)(s-c)}}[/tex]

                      [tex]\sf =\sqrt{36*16*12*8}\\\\ = 6*4*4\sqrt{6}\\\\= 96 *2.45\\\\=235.15 \ cm^2[/tex]

The probability that a car buyer bought an alarm system or bucket seats is 0.50.

Probability of ,

Alarm system p(A) = 40/100 = 0.40

Bucket seat p(B) = 30/100 = 0.30

Alarm system and bucket seat p(A and B) = 20/100 = 0.20

Probability of alarm system or bucket seat is :

= p(A)+p(B)-p(A and B)

= 0.40+0.30-0.20

= 0.50

In mathematics, probability is the likelihood of an event occurring. It is quantified as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty. The higher the probability of an event, the more likely it is to occur. A simple example is the tossing of a coin, where the probability of either head or tail is 1/2.

Learn more about probability at : https://brainly.com/question/11234923

#SPJ4

Answer:

6*v=102

Step-by-step explanation:

The function that represents the relationship is y = 40x

The total area that he painted = 200 square feet

Time is between 8 am and 1 pm

Then the time taken = 5  hours

The relationship is given by the area a person can paint varies directly with the amount of time he works

Here we have to apply the unitary method

The area that he painted in one hour = 200 / 5

= 40 square feet

Consider the y is the total area that he painted and x is the number of hours

Then the function will be

y = 40x

Hence, the function that represents the relationship is y = 40x

Learn more about function here

brainly.com/question/20534410

#SPJ1

As we know 1 kilometer = 39370.079 inches

and, 8.39 kilometer = 330,315 inches.

Kilometers: - It is a unit of length in the international system of units (SI) equal to one thousand meters. It is now the measurement unit used for expressing distances between geographical places on land in most of the world.

Inches: - It is a unit of length in the British imperial and united states customary system of measurement. It is equal 1/36 yard or 1/12 of a foot.

To convert a kilometer measurement to an inch measurement, multiply the length by the conversion ratio.

Since 01 kilometer = 39,370.07874 inches,

We can use this simple formula to convert:

          inches = kilometers × 39,370.079

Now, according to the question:

inches = 8.39 × 39370.079

inches = 33.315

Learn more about Kilometer:

https://brainly.com/question/13987481

#SPJ4

The value of p in the given triangle is equal to 99.3°.

What is Law of Cosines?

In the given question, the side lengths of the triangle are as follows,

[tex]a=3.6 cm,[/tex] [tex]b=2.8cm,[/tex] and [tex]c=5.3cm[/tex]

Here, the angle between a and b, [tex]\angle C=p[/tex]

We know that the angle p between the two sides of lengths a and b can be found using the Law of Cosines Formula, given as,

[tex]c^{2} =a^{2} +b^{2} -2abcosC[/tex]

Substituting the above values, we get

[tex]5.3^{2} =3.6^{2} +2.8^{2} -2 \times 3.6 \times 2.8 \times cos p[/tex]

Simplifying, we get

[tex]28.09=12.96+7.84-20.16cosp\\\implies 28.09=20.8-20.16cosp\\\implies 7.29=-20.16 cosp[/tex]

Rearranging in terms of p, we get

[tex]cosp=-\frac{7.29}{20.16} \\\implies p=cos^{-1} (-0.3616)\\\implies p=99.3\textdegree[/tex]

Therefore, the value of p is equal to 99.3°.

To learn more about the law of cosines from the given link

https://brainly.com/question/27613782

#SPJ1

Answer:

d = 8.596m

or

= 8.6m rounded to the nearest tenth

Step-by-step explanation:

Tangent is:

tan(angle) = opp/adj

First, use

tan35° = 12/x

to find the unmarked piece on the bottom of the triangle.

Then find some more angles in the shape. See image.

Next, use

tan 25° = 12/y to find the length of the entire bottom of the whole, big triangle.

Last, subtract the little part from the whole side to find d. See image.

Answer:

In the picture attached

Step-by-step explanation:

The larger triangle is divided into two smaller ones. Take the first one (the triangle with the angle 35) and find the length of A1 using tan (imagine as if it's a triangle on its own). Do the same thing for the whole diagram (both the small triangles combined) using tan to find the whole length which I called A2, then minus A1 from A2 to find d

The two numbers that we requires are; y=−3+3√5 or y=−3−3√5

We know that in this question, we are required to obtain the two numbers that multiply to -36 and add up to -6. Now we have to write the problem into a system of simultaneous equations.

Thus;

Let the numbers by x and y

x + y = -6 ---- (1)

xy = -36 ------ (2)

x = -36/y ------ (3)

If we substitute (3) into (1)

-36/y + y = -6

-36 + y^2/y = -6

Multiply through by y

-36 + y^2 = -6y

Forming a proper quadratic;

y^2 + 6y - 36 = 0

Solving the quadratic for y

y=−3+3√5 or y=−3−3√5

Learn more about quadratic equation:https://brainly.com/question/17177510

#SPJ1

There is a modest rise in arrival rates as compared to the prior arrival because the value is bigger than 0.05. It is a minuscule rise.

Given that,

The Message is arrive at an electronic mall server at the average

rate is 4 messages for every 5 minutes. Then the average

number of message is said to be a and mean is 4 to 5 interval.

Therefore ,we can use poission's approximation  to binomial  distribution in this case,

λ=4/5 min

( a ) Then , The Number of messages arrived in 1 hour

4x 12 = 48 . , So 48 messages per hour.

Now , our New arrival rate of messages , λ =48

By using possion's distribution ,

θ = time/rate

= 60/48= 1.25

NOW

probability density function of X is given as

f (x ) = θ e^-θx

for X>0

Given , the probability of new message arrival during given frame

equal is 0.05

p (X > x ) = 0.05

Now , of θ ∫e^-θx dx  = 0. 05 .

then, e^-θx =0.05

Apply logarithm on both sides , then

In( e^-θx) = In 0.05

By solving,

1- 25

X = 2. 39658

(b) Now , probability of arrival of 50 messages in 60 minutes

p (X>2.39658 ) = 0.05

Now arrival gap is θ = 60/50 = 1.2

P(x> 2.39658 ) =e^-θx

=e^- 1- 2 * 2.39658 = 0.0564

NOW ,

p(x>2- 39658) = 0.0564.

It is greater than 0.05 , so it is called there is slight increase in arrival rates as compared to the previous arrival. It is very small increase .

Learn more about probability density function here:

brainly.com/question/14410995

#SPJ4

Answer:

3.730 = b

Step-by-step explanation:

Givens

<B = 25 degrees

b = ?

a: =  8   meters

Formula

Tan(B) = opposite / Adjacent

Solution

Solve for b (opposite)

Put in values for the letters.

Tan(25) = b /8

0.4663 = b / 8                          multiply both sides by 8

0.4663*8 = 8*b/8                     Combine

3.730 = b

The probability that a 3 will be rolled would be 0.125 and the expected number of 6's roll would be 68.

What is probability?

Probability is defined as the possibility of an event being equal to the ratio of the number of favorable outcomes and the total number of outcomes.

The events' estimated probabilities are as follows, according to the exponential probability theory:

P(3) = 0. 125

P(6 in 500 rolls) = 68 rolls

Number of times event occurs / number of trials

A number of attempts = sum of frequency:

(12+35+11+23+7+12) = 88

So the probability that a 3 will be rolled as

⇒ number of 3's / number of attempts

⇒ 11/88 = 0.125

The number of 6's probable in 500 rolls

⇒ (12 /88) × 500

⇒ 68.18 = 68

Therefore, the expected number of 6's roll would be 68.

To know more about probability check the below link:

https://brainly.com/question/11234923

#SPJ1

The interest rate in tenth of percentage that would be required in order for Joseph to end up with $1.710 is 4.4%.

The interest rate is the amount a lender charges a borrower and is a percentage of the principal

To calculate the interest rate that would be required, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1 and solve for R

Hence, the interest rate is 4.4%.

Learn more about interest rate here: https://brainly.com/question/2294792

#SPJ1

Answer: 24.957

Step-by-step explanation: Calculator

The total cost of your trip to the movie theater is $43.50.

The total cost will be the sum of money spent on ticket and soda and popcorn.

Ticket cost for or cost price of Ticket for:

         5 years old brother = $4.25

          Grandparents = $6.00 × 2 = $ 12.00

           For self= $7.25

Total cost of tickets = $4.25 + $ 12.00 + $ 7.25

                                 = $ 23.50

Total Money spent = Cost of ticket + cost of soda and popcorn

                                = $ 23.50 + $20

                                = $ 43.50

Learn more about Total Cost:

https://brainly.ph/question/6284625

#SPJ4

a. The standard form of an equation is A x + By  = C.

b. The slope of the line is 5 / 3

c. The point slope form of the line is y + 3 = 5 / 3 (x - 7)

d. The standard form of the line is 3y - 5x = -44

The equation of a line can be represented in different form such as slope intercept form, standard form, general form and point slope form.

The standard form of an equation is represented as follows;

A x + By  = C

where

Therefore,

let's find the slope of the line passing through (7, -3) and (4, -8).

m = slope = - 8 + 3 / 4 - 7

m = -5 / -3

m = 5 / 3

The point slope form is represented as follows;

y - y₁ = m(x - x₁)

using (7, -3)

y + 3 = 5 / 3 (x - 7)

Let's rearrange the equation into standard form.

y + 3 = 5 / 3 (x - 7)

y + 3 = 5 / 3 x - 35 / 3

y - 5 / 3 x  = - 35 / 3 - 3

y - 5 / 3 x  = -44 / 3

Therefore,

3y - 5x = -44

learn more on equation of a line here: brainly.com/question/14200719

#SPJ1

In the equation y= 17x + 8 ,

the value of x = (1,25) ,(2,42) ,(3,59) ,(4,76).

Given that,

           y= 17x + 8

When x = 1

y = 17 × 1 + 8 = 25

when x=2,

y = 17 × 2 + 8 = 42

When X=3,

y = 17 × 3+ 8 = 59

when X=4

y = 17 × 4+ 8 ]= 76

Therefore, the required solution is :

x = (1,25) ,(2,42) ,(3,59) ,(4,76).

Learn more about Equation:

https://brainly.com/question/14686792

#SPJ4

y = -3x +2

The general equation for a linear line is y = mx + b

Where:

To find the slope of a line we can use the formula [tex]\frac{rise}{run}[/tex]

Rise over run can be found suing two different points on the line.

in this case: (-1,5) and (1,-1)

The rise is the difference in y values: [tex]y_2 -y_1[/tex]

rise = (-1) - 5

rise  = -6

run = [tex]x_2 - x_1[/tex]

run = 1 - (-1)

run = 2

rise/run = [tex]\frac{-6}{2}[/tex]

rise/ run = -3

We now have y = -3x + b

To find b we just look at the graph and locate a what point x = 0

Convert the inequality to interval notation: a > 10:

(10, ∞)

Answer: 10

Step-by-step explanation:

Set the equal angles as x, as shown below.

Then, [tex]sin(x)=\frac{x+4}{8}[/tex] and [tex]sin(x)=\frac{2x+1}{12}[/tex]. Set them equal to each other and solve for x:

[tex]\frac{x+4}{8} =\frac{2x+1}{12} \\ \\12(x+4)=8(2x+1)\\12x+48=16x+8\\48-8=16x-12x\\4x=40\\x=10[/tex]

This is assuming those two triangles are right triangles. I'm actually not sure if they're right triangles.

The length of side PR will be 40.

What is mean by Triangle?

A triangle is a three sided polygon, which has three vertices and three angles which has the sum 180 degrees.

Given that;

In the isosceles triangle,

Two sides are,

⇒ PR = 5n and QR = (32 + n)

Now,

Since, The triangle is an isosceles triangle.

So, Two sides are equal.

We formulate;

5n = 32 + n

5n - n = 32

4n = 32

n = 8

Thus, The length of side PR = 5n

                                           = 5 x 8

                                           = 40

Therefore, The length of side PR will be 40.

Learn more about the triangle visit:

https://brainly.com/question/17335144

#SPJ1

The given organic molecule contains a trigonal pyramidal nitrogen atom, which is underlined in red.

Given;

The provided organic molecule's structural structure, with the nitrogen atom's position around it, is colored red.

Number of electron pairs in Nitrogen = 4 (3 Bond pairs + I Lone pair)

General Formula = AX₃E

Electronic Geometry = Tetrahedral

Molecular Geometry = Trigonal pyramidal

Hybridization = sp³

Hence, the nitrogen atom highlighted in red in the given organic molecule is Trigonal pyramidal.

To learn more about Geometry click here:

brainly.com/question/16836548

#SPJ4

Answer:

B

explanation:

there's a high chance you might as well get at least one milk chocolate because there's plenty..

The ordered pair that is the solution to the equation -x + 5y = 3 is (-3,0) and (0, 0.6)

Ordered pair:

Ordered pairs refers a set of 2 numbers that exist in a particular order. The first one represents the x value and the second one refer the y value.

Given,

Here we need to find the ordered pair (x, y) that is a solution to the equation -x + 5y = 3

In order to find the solution ordered pair we have to plot this equation on the graph.

To plot this equation, we have to use the graphing calculator, and then input the given equation as the function, then we get the graph like the following.

While we looking into the graph, we have identified that the solution ordered pairs are (-3,0) and (0, 0.6)

To know more about Ordered pair here.

https://brainly.com/question/28874341

#SPJ1