Solve the following equation by factoring. 2x 2 - 5x - 12 = 0

Answer:

B

Step-by-step explanation:

Answer:

80%

50%

Step-by-step explanation:

To solve the inequality 5x < 16 + x, you first rearrange it to 4x < 16 by subtracting x from both sides. Then, divide by 4 to solve for x, which results in x < 4. This means any value less than 4 satisfies the inequality.

To solve the inequality 5x < 16 + x, you first need to rearrange the inequality so that all x terms are on one side of the inequality and the constant is on the other. You can start by subtracting x from both sides, which gives you 4x < 16.

Next, you can solve for x by dividing both sides by 4. Doing this gives you x < 4, which is your solution.

This means that any value less than 4 will satisfy the inequality. For example, if you insert 3 into the inequality (5*3 < 16 + 3), it holds true because 15 < 19.

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Answer:  The required value of y in the solution to the given system is 6.4.

Step-by-step explanation:  We are given to find the value of y in the solution to the following system of linear equations :

[tex]x+y=1~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(i)\\\\2x-3y=-30~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(ii)[/tex]

To find the value of y, we will try to eliminate x from both the equations.

Multiplying equation (i) by 2, we have

[tex]2(x+y)=1\times2\\\\\Rightarrow 2x+2y=2~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~(iii)[/tex]

Subtracting equation (ii) from equation (iii), we get

[tex](2x+2y)-(2x-3y)=2-(-30)\\\\\Rightarrow 2y+3y=2+30\\\\\Rightarrow 5y=32\\\\\Rightarrow y=\dfrac{32}{5}\\\\\Rightarrow y=6.4.[/tex]

Thus, the required value of y in the solution to the given system is 6.4.

Answer:

3/4z-1/4z+1=2/4z+1

Combine like terms to get

1/2z+1=1/2z+1

Subtract one from both sides to get

1/2z=1/2z

Multiply both sides by 2 to get

z=z.

This is D, has infinitely many solutions because any number you enter as z will equal itself.

Ex. 5 as z would be 5=5 which is true with any number.

Final answer:

The surface area of the rectangular prism is represented as [tex]2x^2 + 16x[/tex] square units, and the volume as [tex]2x^3 + 6x^2[/tex]cubic units, based on the dimension formulas where the side lengths of the base are x and x+3, and the height is 2x.

Explanation:

The question involves finding the surface area and volume of a rectangular prism with dimensions based on the variable x. Given, the side lengths of the base are x and x+3, and the height is 2x.

Surface Area Calculation

The formula for the surface area of a rectangular prism is 2lw + 2lh + 2wh, where l is length, w is width, and h is height. Substituting the given values, we get:

Top and Bottom Surface Area: 2(x)(x+3)

Front and Back Surface Area: 2(2x)(x+3)

Left and Right Surface Area: 2(x)(2x)

Adding these together yields the total surface area as [tex]2x^2 + 10x + 6x[/tex], which simplifies to [tex]2x^2 + 16x[/tex].

Volume Calculation

The volume of a rectangular prism is found using the formula V = lwh. For this prism, it translates to V = x(x+3)(2x), which simplifies to [tex]2x^3 + 6x^2.[/tex]

In conclusion, the surface area of the prism can be represented as [tex]2x^2 + 16x[/tex] square units, and the volume as [tex]2x^3 + 6x^2[/tex] cubic units.

Probability is the likelihood or chance that an event will occur. If the probability of the spinner showing an even number if the odds against a spinner showing an even number are 3:8 is 8/11

Probability is the likelihood or chance that an event will occur. The formula for calculating probability is expressed as:

Probability = expected/total outcome

If the odds against a spinner showing an even number are 3:8, the  total number of spins is 11 spins

From the ratio

Number of odd spin = 3

Number of even spin = 8

Find the probability of spinning even

pr(even spin) = 8/11

Hence the probability of the spinner showing an even number if the odds against a spinner showing an even number are 3:8 is 8/11

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Translation of 4 units up

Answer:

0.075 inch per year

Step-by-step explanation:

The diameter changed 3 inches in 40 years. Dividing 3 inches by 40 years gives a growth rate of 0.075 inch per year.

:)

0.075 inches is average rate of change in the diameter of the tree pee year.

A division is a process of splitting a specific amount into equal parts.

Given,

A giant red oak's diameter was 248 inches in 1965

The tree's diameter had grown to 251 inches in 2005.

The change in diameter from 1965 to 2005 is 251-248

3 inches.

The times in years is 2005-1965=40 years.

We have to find the average rate of change in the diameter of the tree pee year.

3/40

0.075 inches

Hence, 0.075 inches is average rate of change in the diameter of the tree pee year.

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Answer:

the line passes through 3 lol u just answered ur own question

Step-by-step explanation:

Final answer:

Working backwards from the $10 Julia has left after spending and losing money, we calculate that she initially had $30 for her birthday.

Explanation:

To find out how much birthday money Julia initially had, we can work backwards from the $10 she has left. Julia lost half of her money after spending 1/3 of it, which means that the $10 is half of what remained after spending 1/3. Therefore, before she lost half, she must have had $20 (since $10 is half of $20). We can then calculate the original amount by understanding that $20 is 2/3 (the remaining amount after spending 1/3) of the original amount. To find the full amount, we divide $20 by 2/3.

Here's the calculation step-by-step:

Let the original amount of birthday money be X.

Julia spent 1/3 of X, leaving her with 2/3 of X.

She then lost half of the remaining money, leaving her with (1/2)(2/3)X, which equals $10.

Solving for X: (1/2)(2/3)X = $10 -> (1/3)X = $10 -> X = $10 / (1/3) -> X = $10 × 3 -> X = $30.

Julia originally had $30 for her birthday.

Answer:

[tex]82^{o}[/tex]

Step-by-step explanation:

I assumed you are asking about the angle size of minor arc DE.

OD and OE are radii and therefore are equal.

So triangle ODE must be isosceles. That makes angle OED also 49 degrees.

Using sum of interior angles of a triangle DOE = 180 - (49+49)= 82 degrees.

Note: Your question is ambiguous. There are two arc DE's in this question:

The minor arc, straight from D to E along the circumference

The major arc, from D along the circumference to F then E. That is also arc DE

assuming the tiles are numbered 1, 2, 3, 4, 5, 6

there is one tile with the number 2 on it in the first bag

 and 1 tile with the number 3 on it in the second bag

so you have a 1/6 probability of picking the 2 and a 1/6 probability of picking the 3

so 1/6 * 1/6 = 1/36 probability of picking them both

Answer:

1/36

Step-by-step explanation:

first bag, 1/6 probability of taking 2 from the bag with 6 tabs

second bag, 1/6 probability of taking 3 from the bag with 6 tabs

Multiply 1/6 and 1/6 = 1/36

Answer:

[tex]32x^2[/tex]

Step-by-step explanation:

Given : [tex]96x^5[/tex] and [tex]64x^2[/tex]

To find : GCF

Solution :

[tex]96x^5 =2 \times 2 \times 2 \times 2 \times 2\times 3 \times  x \times x \times x \times x \times x[/tex]

[tex]64x^2 =2 \times 2 \times 2 \times 2 \times 2\times 2 \times  x \times x [/tex]

GCF = [tex]2 \times 2 \times 2 \times 2 \times 2\times  x \times x [/tex]

GCF = [tex]32x^2[/tex]

Hence the GCF of [tex]96x^5[/tex] and [tex]64x^2[/tex] is [tex]32x^2[/tex]

Answer:

[tex]y=45[/tex]

Step-by-step explanation:

We have been given an image of a parallelogram. We are asked to find the value of y for our given parallelogram.

We know that opposite angles of parallelogram are equal and two consecutive angles are supplementary.

Using these properties, we can set an equation as:

[tex]35^{\circ}+y^{\circ}+40^{\circ}+60^{\circ}=180^{\circ}[/tex]

[tex]135^{\circ}+y^{\circ}=180^{\circ}[/tex]

[tex]135^{\circ}+y^{\circ}=180^{\circ}[/tex]

[tex]135^{\circ}-135^{\circ}+y^{\circ}=180^{\circ}-135^{\circ}[/tex]

[tex]y^{\circ}=45^{\circ}[/tex]

[tex]y=45[/tex]

Therefore, the value of y is 45.

Answer:

We choose answer C) First 150° and then 60°

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.

The waiter places a bowl of soup in front of Caesar. In a counterclockwise direction, he passes the soup to Jada who then passes it to Haifa. Which two rotations about the center of the table describe passing the soup?

A) First 200° and then 80°

B) First 180° and then 72°

C) First 150° and then 60°

D) First 100° and then 40°

My answer:

From the photo, we can see that there are 12 people or 12 places in the circle. And each person has the same distance to other one.

Hence, we can find the the arch degrees between two members:

360 / 12 = 30 °

So from  Caesar to Jada, we have to pass through 5 arches

=> the rotation counterclockwise in this situation is: 30 ° *5 = 150°

So from Jada to Haifa, we have to pass through 2 arches

=> the rotation counterclockwise in this situation is: 30 ° *2 = 60°

We choose answer C) First 150° and then 60°

Multiply the two values together. 7.62 x 1.23 = 9.3726
10^2 x 10^4 = 10^6.

9.3726 x 10^6 is the answer in Scientific Notation.

The triangle which is not a unique triangle is:

                   Triangle Q.

                  Hence, Triangle P will be unique.

     Hence, Triangle Q is not unique.

( Since we are given two angles and the measure of the third angle could be known with the help of property that:

Sum of all the angles of a triangle is 180° )

( Since, we make a line segment of given length and then keep the compass at one of end point and make a 60 degree angle and cut that side into length 8 cm and finally join the other end point and the constructed line to get a triangle)

Hence, Triangle R is also unique.

( First draw a line segment of length 8 cm and at both the ends of the line make a 50 degree angle and extend the line over the arc of the angle and see where two lines intersects.

By such a way we obtain a unique triangle)

Answer:

Degree = 2

Step-by-step explanation:

Given: [tex]5y^2+y+1[/tex]

We are given a polynomial with variable y.

Polynomial: It is an expression with positive number exponent of same variable.

Degree: It is highest power of variable.

In the given polynomial, [tex]5y^2+y+1[/tex].

It has three term with variable y.

The highest power of y is 2.

Leading coefficient is 5

Hence, The degree of given polynomial is 2

Each person will get 1/6 lb of chocolate.

Here,

Number of people = 3.

Quantity of chocolate = 1/2 lb

What is equally divide?

The law recognizes that both spouses contribute to child care, household management and financial support.

Now,

Quantity of chocolate dividing equally in 3 person = [tex]\frac{\frac{1}{2} }{3}[/tex]

                                                                             = [tex]\frac{1}{6}[/tex]

Hence, Each person will get 1/6 lb of chocolate.

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Chang needs to bike 65 miles on the last day to have an average of 65 miles per day.

To find how many miles Chang needs to bike on the last day, we need to find the total miles he has biked so far. So, we add up the miles he has biked on the first three days: 70 + 63 + 66 = 199 miles.

To find the average of 65 miles per day, we need to divide the total miles by the number of days: 199 / 4 = 49.75 miles per day.

Since Chang wants to have an average of exactly 65 miles per day, he needs to bike 65 miles on the last day. Therefore, he needs to bike 65 miles on the last day.