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IrinaK [193]
3 years ago
9

Which method could be used to factor x2 - 25?

Mathematics
2 answers:
butalik [34]3 years ago
8 0

Answer:

C

Step-by-step explanation:

a² - b² = (a + b)(a - b)

x² - 25 = x² - 5² = (x + 5) (x - 5)

Mandarinka [93]3 years ago
6 0

Answer:

A. Perfect square Trinomial

Step-by-step explanation:

Just did its

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Gloria has 11 markers in a backpack. One of them is purple and one is gray. Find the probability Gloria will reach into the back
SCORPION-xisa [38]

Answer:

Step-by-step explanation:

She has 1 in 11 chances of getting the purple one

One of her choices is gone after she takes out the purple one. She has a 1 in 10 chance of taking out the gray one.

1/11 * 1/10 = 1/110

8 0
3 years ago
How do you do this problem? Explain.
Elza [17]

Answer:

The charges will be the same after 4 hours.

Step-by-step explanation:

Total Amount = y

Number of hours = x for x > 2

Garage A: y = $7.00 + (x - 2)*3

Garage B: y = 3.25*x

Part 3: What is the cost to be equal?

3.25x = 7 + 3(x - 2)                     Remove the brackets

3.25x = 7 + 3x - 6                       Collect terms on the right

3.25x = 3x + 1                              Subtract 3x from both sides.

3.25x - 3x = 3x - 3x + 1               Combine

0.25x = 1                                     Divide by 0.25

0.25 x/0.25 = 1 / 0.25            

x = 4 hours.


 

7 0
3 years ago
The volume of a cube is 27 cubic meters. what is its surface area in square meters?
erma4kov [3.2K]

To find the answer, take the measurement of an edge of the cube, multiply it by 6, and then square that number.

Ex:

Edge = 16

Faces in 1 cube = 6

     6 * 16 = 96

96^2 (which is just 96 * 96)= 9,216


I hope this helps! :)

4 0
3 years ago
Find the fifth term in the sequence that is defined as follows:
hram777 [196]

Answer : The fifth term in the sequence is -2.

Step-by-step explanation :

As we are given that the expression to calculate the n^{th} term.

The expression is as follows:

a_n=2(-1)^n

where,

n is the number of term

Given:

n = 5

Now putting the value of n in the above expression, we get:

a_n=2(-1)^n

a_5=2(-1)^5

a_5=2\times (-1)

a_5=-2

Therefore, the fifth term in the sequence is -2.

5 0
3 years ago
Solve the system by substitution<br> y=-6x<br><br> -2x-7y=40
never [62]

Answer:

x=1, y=-6. (1, -6).

Step-by-step explanation:

y=-6x

-2x-7y=40

------------------

-2x-7(-6x)=40

-2x+42x=40

40x=40

x=40/40

x=1

y=-6(1)=-6

6 0
3 years ago
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