MATHEMATICS MIDDLE SCHOOL

What are the factors of x2 – 100?

Answers

Answer 1

Answer:

Answer:

(x – 10)(x + 10)

Step-by-step explanation:

Answer 2

Answer: Solutions for x^2-100=0 are x=10 and x=-10

Related Questions

Pleaassseeeee helpppppp,,,,!!!!!!
You have 80 pieces of fabric to make a wall hanging. Each piece of fabric is a square with a side length of 5 inches. You use as many pieces of fabric as possible to create a square wall hanging.What is the area of the wall hanging? How many pieces of fabric are left over? How many more pieces of fabric would you need to increase the size of the wall hanging?
What is the value of x when 2x + 3 = 3x – 4 ? A. –7 B. -1/5 C. 1 E. 7
Juanita runs every third day and swims every fifth day. If Juanita runs and swims today, in how many days will she run and swim again on the same day?
I need to write an even number between 7 and 16 draw a picture an them write a sentence to explain why it is an even number

What is the value of x, when -9(x-5)=x+22 1/2

Answers

Answer:

$\large\boxed{x=(9)/(4)=2(1)/(4)}$

Step-by-step explanation:

$-9(x-5)=x+22(1)/(2)\qquad\text{multiply both sides by 2}\n\n(2)(-9)(x-5)=2x+(2)\left(22(1)/(2)\right)\n\n-18(x-5)=2x+45\qquad\text{use the distributive property:}\ a(b+c)=ab+ac\n\n(-18)(x)+(-18)(-5)=2x+45\n\n-18x+90=2x+45\qquad\text{subtract 90 from both sides}\n\n-18x+90-90=2x+45-90\n\n-18x=2x-45\qquad\text{subtract}\ 2x\ \text{from both sides}\n\n-18x-2x=2x-2x-45\n\n-20x=-45\qquad\text{divide both sides by (-20)}\n\n(-20x)/(-20)=(-45)/(-20)\n\nx=(45:5)/(20:5)\n\nx=(9)/(4)\to x=2(1)/(4)$

Answer:

x = 2.25

Step-by-step explanation:

-9(x - 5) = x + 22 1/2

Distribute the nine and then add 9x to both sides

-9x + 45 = x +22 1/2

+ 9x + 9x

Then try to get x alone

45 = 10x + 22 1/2

-22 1/2 -22 1/2

22.5 = 10x

$(22.5)/(10) = (10x)/(10)$

2.25 = x

Roy and Sam start solving the equation as follows.Which student's work is correct so far and what property did he use?

A.
Sam's work is correct so far. He used the addition property of equality.
B.
Roy's work is correct so far. He used the addition property of equality.
C.
Sam's work is correct so far. He used the subtraction property of equality.
D.
Roy's work is correct so far. He used the subtraction property of equality.

Answers

Answer:

The correct option is D.

Step-by-step explanation:

The given equation is

$-3x+4=5x-6$

According to the addition property of equality $a=b$ and $a+c=b+c$ are equivalent equations.

Use addition property of equality, add 3x on both the sides.

$-3x+4+3x=5x-6+3x$

$4=8x-6$

Therefore Sam's work is incorrect because he make calculation mistake.

According to the subtraction property of equality $a=b$ and $a-c=b-c$ are equivalent equations.

Use subtraction property of equality, subtract 5x from both the sides.

$-3x+4-5x=5x-6-5x$

$-8x+4=-6$

Therefore Roy's work is correct because he used subtraction property.

Option D is correct.

Is 3/8 percentage same as 0.375 as a decimal ?

Answers

3/8 is the same amount as 0.375.

3/8 is not percentage.

Yes, yes it is. 8 divided by 3 equals 0.375.

Round 21.98 to the nearest hundredth

Answers

21.98 rounded to the nearest hundredth is 22

It's 21.98, the hundredths place is where the 8 sits.

Two fifths of the fish in grays fish tank are guppies. One fourth of the guppies are red. What fraction of the fish in grays tank are red guppies?

Answers

it would be one fourth cause he tells you the fraction of how many guppies are red

I think it goes like this:
1/4 of 2/5= 2/20 or 1/10

It's asking what fraction are red guppies and it's telling us that 2/5 of the tank is made up of guppies and out of that 2/5, 1/4 of them are red. So you would have to figure out what 1/4 of 2/5 is to find out how many red guppies there are.

If a>b and b>c, what is true about the relationship between a and c? Explain your reasoning

Answers

You could say that A is the biggest of the three letters and C is the smallest of the three letters. This is shown because A is bigger than B, but B is bigger than C, which means C is less than A and B, and A is greater than B and C.

Other Questions

I need help on the following questions there are 3 files.You may add a file if you prefer.THANKS>

Divide 33 photos into two groups so the ratio is 4 to 7.

In the year 2000 Detroit, Michigan had a population of 1,144,646. What is this population rounded to the nearest hundred thousand?

How do you explain how you convert a decimal?