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3 years ago

How do you factor x²-100 ?

Mathematics

1 answer:

Strike441 [17]3 years ago

5 0

Answer:

(x+10)(x-10)

Step-by-step explanation:

both numbers can be squared so you have to take out the square and since 100 is negative one must be positive and one must be negative

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What is the volume and how is it measured? 3 1/4 ft 3 ft and 3 3/4 ft.

Law Incorporation [45]

Answer:

$36 \frac{9}{16}$ cubic feet

Step-by-step explanation:

If these are the width, length and height of a rectangular box (such details were not specified in the question), the volume is calculated by multiplying the three quantities because the volume of a rectangular prism is : width x height x length.

The easiest way to do it when mixed numbers are involved (specially when the denominators of the fractions are "4" like in your case), is to convert them to decimal form and then do the multiplication:

3 1/4 = 3.25

3 3/4 = 3.75

now do the product of the three quantities:

3 x 3.25 x 3.75 = 36.5625 = 36 + 0.5625

now convert 0.5625 into fraction form: 9/16 and you get the final answer (remember to include the cubic form of the units "ft" since each quantity you multiply carries a feet unit:

36 9/16 cubic feet

3 0

4 years ago

Read 2 more answers

Correct answer gets brainliest +25 points

Reil [10]

Answer:

The awner is C

Step-by-step explanation:

Have a great day!

4 0

3 years ago

Read 2 more answers

How do you solve 38.7×10 to the fourth power

faltersainse [42]

ndex Notation and Powers of 10

10 to the Power 2

The exponent (or index or power) of a number says

how many times to use the number in a multiplication.

102 means 10 × 10 = 100

(It says 10 is used 2 times in the multiplication)

Example: 103 = 10 × 10 × 10 = 1,000

In words: 103 could be called "10 to the third power", "10 to the power 3" or simply "10 cubed"

Example: 104 = 10 × 10 × 10 × 10 = 10,000

In words: 104 could be called "10 to the fourth power", "10 to the power 4" or "10 to the 4"

8 0

4 years ago

How do I solve this I’m dumb

laila [671]

-1/4 + f/8 = 1/2.
The LCD is 8. Rewrite this equation as -8/4 + 8f/8 = 8(1/2) and then reduce the result:

-2 + f = =4

Then f = 6.

You should check this result.

8 0

3 years ago

PLEASE PLEASE PLEASE HELP ME. IM STUCK IN A SUMMER SCHOOL AND IF I DONT GET GOOD GRADES ILL GET IN BIG TROUBLE AND IM TOTALLY LO

Mrrafil [7]

Answer:

We know that in the box there are:

4 twix

3 kit-kat

Then the total number of candy in the box is:

4 +3 = 7

Here we want to find the probability that we draw two twix.

All the candy has the same probability of being drawn from the box.

So, the probability of getting a twix in the first drawn, is equal to the quotient between the number of twix and the total number of candy in the box, this is:

p = 4/7

Now for the second draw, we do the same, but because we have already drawn one twix before, now the number of twix in the box is 3, and the total number of candy in the box is 6.

this time the probability is:

q = 3/6 = 1/2

The joint probability is the product of the individual probabilities, so here we have

P = p*q = (4/7)*(1/2) = 2/7

b) same reasoning than in the previous case:

For the first bar, the probability is:

p = 3/7

for the second bar, the probability is:

q = 2/6 = 1/3

The joint probability is:

P = p*q = (3/7)*(1/3) = 1/7

c) Suppose that first we draw a twix.

The probability we already know that is:

p = 4/7

Now we want another type, so we need to draw a kit-kat, the probability will be equal to the quotient between the remaining kit-kat bars (3) and the total number of candy in the box (6)

q = 3/6

The joint probability is:

P = p*q = (4/7)*(3/6) = 2/7

But, we also have the case where we first draw a kit-kat and after a twix, so we have a permutation of two, then the probability in this case is:

Probability = 2*P = 2*2/7 = 4/7

3 0

3 years ago