MATHEMATICS HIGH SCHOOL

Factor x2 - 8x + 9Answer

(x + 9)(x - 1)

(x + 9)(x + 1)

(x - 9)(x - 1)

Prime

Answers

Answer 1
Answer:

The factors of the expression are (x - 9) (x + 1).

What is an expression?

An expression contains one or more terms with addition, subtraction, multiplication, and division.

We always combine the liketerms in an expression when we simplify.

We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.

Example:

1 + 3x + 4y = 7 is an expression.

3 + 4 is an expression.

2 x 4 + 6 x 7 – 9 is an expression.

33 + 77 – 88 is an expression.

We have,

x² - 8x + 9

Determinantformula.

a = 1, b = -8, c = 9

So,

x = -b ± √(b² - 4ac) / 2a

x = 8 ± √(64 - 36) / 2

x = 8  ± √100 / 2

x = 8 ± 10 / 2

x = 4 ± 5

x = 4 + 5 and x = 4 - 5

x = 9 and x = -1

x - 9 = 0 and x + 1 = 0

Now,

The tworoots are (x - 9) and (x + 1).

Thus,

The factors of the expression are (x - 9) (x + 1).

Learn more about expressions here:

brainly.com/question/3118662

#SPJ5
Answer 2
Answer: It is prime because there aren't any numbers that multiply to 9 and add to -8

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What is the exact value that is 49% 1013

Square ABCD and square EFGH share a common center on a coordinate plane.EH is parallel to diagonal AC . Across how many lines of reflection can the combined figure reflect onto itself?

Answers

Answer: 4

Step-by-step explanation:

Given: Square ABCD and square EFGH share a common center on a coordinate plane.EH is parallel to diagonal AC .

Since square is a regular quadrilateral, which means that it has four equal sides and angles.  there are two diagonal of the square which divides it into two equal halves.

Also, there are 4 lines of reflection of every square which reflect onto itself.

Therefore, in square ABCD , AC and BD are the diagonals of the square which divide it into equal halves by passing through the center.

Since, EH is parallel to diagonal AC,l then the diagonal will bisect the sides of the square EFGH.

Similarly if we draw the diagonals of square EFGH it will extend and bisect the sides of the Square ABCD.

Hence, there are 4  lines of reflection can the combined figure reflect onto itself.
Hello,

Answer B

The reflection 's axis of EFGH are the same as those of ABCD which are 4.

Make a phrase with each of them for me please 1) Beneficial
2) benefited
3) Breath
4) Brilliant

Thank you so much !
Please , no grammars mistakes

Answers

1) beneficial actions
2) benefited from
3) icy breath
4) brilliant thinker

There are many good phrases you could possibly make from these words, these are merely examples. 
Hope this helped you!
1. Beneficial means helpful
2.Benefited is bring advantage to or receive advantage
3.Breath is how you take in air "breathing air"
4.Brilliant is clever or very bright

The volume of cube is 343 cubic centimeters. what is the surface area of the cube? show your work.

Answers

In short, the surface area of the cube is 294cm^2.

To find volume of a cube, a side is multiplied by itself three times. So, we have this so far, let "s" equal a side of the cube... s*s*s or s^3 = volume. But, we have to work backwards to find s. We know the volume is 343 cm^3 and we know to find volume we take a side and multiply it by itself three times, also known as cubing a side.

So, s^3 = 343 cm^3. To find what one s equals, we have to take the cube root of 343. A cube root is the opposite of cubing a side and that's why it works.

Basically, we're trying to find what number times itself three times will equal 343. A cube root of 343 will tell us the answer. So, once we cube root 343, we get 7. This means that 7 is one s or the side length of the cube. Remember, a cube has all equal sides, so 7 is the side lengths for the whole cube.

Now, to find surface area of a cube, the formula is 6*s^2. This means that the side is squared times six. We already know what the side is, 7, and order of operations, PEMDAS, tells us that exponents come before multiplication. So, we have 7^2 which is 49 times 6. 49 * 6 = 294. Hope this helped!

An item is purchased for a wholesale price of $48 and will be sold at a 55 percent markup. Which expression should be used to find the amount of the markup?

Answers

Answer:

The answer is 48(0.55) x 48

Answer:

The answer is 48(0.55) x 48

Step-by-step explanation:

wholesale $48 and sold at 55% which is the same as 0.55 then multiply wholesale by percent

Which of the following groups has terms that can be used interchangeably with the others?1. Percentage, Probability, and Proportion2. Critical Value, Probability, and Proportion3. Critical Value, Percentage, and Probability4. Critical Value, Percentage, and Proportion

Answers

Answer: 1) Percentage, Probability, Proportion

Step-by-step explanation:

In statistics,

▪Proportion means a fraction of the total.

▪Percentage means a number or a ratio, expressed as a fraction of 100. Here, the total is 100.

▪Probability which may look slightly different from the other two means a number between 0 and 1, showing the exact likelihood of an event happening. Which in context can mean, a number showing a fraction of an event happening out of the whole (0 to 1).

▪Critical value means a point in hypothesis testing on the test distribution that is compared to the test statistic to determine whether to reject the null hypothesis.

In the four definitions, the odd one out is Critical Value.

So the option without critical value in it is option 1) Percentage, Probability, Proportion since we can use the three interchangeable.

Answer:

1. Percentage, Probability, and Proportion

Step-by-step explanation:

Proportion means a portion of a whole e.g. 2/5

Percentage means a ratio of a number expressed as a fraction of 100 e.g 20/100

Probability- This means the likelihood of an event to occur e.g 1/2

All these three terms are usually expressed as a Fraction of a Number which makes them similar.

Convert the fraction to higher terms. Enter the value of the missing numerator 3/10=?/80

Answers

3/10 multiply with 8 on both numerator and denominator

therefore, 3/10 = 3x8/10x8 =  24/80

I think the answer is 24/80 because you have multiplied the denominator by 8 to get to ?/80 from 3/10. Therefore, you need to multiply 3 by 8 also, which when you do, you get 24/80
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