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Ipatiy [6.2K]
4 years ago
10

Factor each expression 15a - 13a

Mathematics
2 answers:
Komok [63]4 years ago
8 0
Answer is 2a.

(1) Rephrase the expression as (15-13)a
(2) Solve the parenthesis and get 2
(3) Multiply 2 by a = 2a
ivanzaharov [21]4 years ago
8 0

Answer:

(15-13)a=2a

Step-by-step explanation:

When you want to factor an expression you have to take out the number or variable that everything is multiplied by. In this case: 15a - 13a, both 15 and 13 are being multiplied by the variable <em>a, </em>so we can take out that number and write it only once and multiplied by the two numbers:

(15-13)a,

we know that in math 15a - 13a = (15-13)a, now we can add or subtract the numbers and the answer will be: 15-13=2, so (15-13)a = 2a.

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How to simplify radical expressions
Veseljchak [2.6K]
Hey there!

To simplify radical expressions, refer to the conversion of a radical expression to a number with an exponent:

\sqrt[a]{x} =  x^{\frac{1}{a} }

Remember that if you don't see an index, there is an implied "2" that will go where "a" is. 

Depending on your problem, you could also cancel a radical by raising the entire expression by the second power (only if your index is 2). 

Hope this helped you out! :-)
5 0
3 years ago
Susan colored in the decimal grid shown below. Write an expression that shows the area she colored. Then evaluate the exptession
madam [21]

Answer:

Step-by-step explanation:

The answer is lalalala cuz of the amdmorhon provides

3 0
3 years ago
What is the mean of the dot plot???​
vichka [17]

Answer:

19.5 (Rounded: 20)

Step-by-step explanation:

In math, the mean is every number added together, then divided by the amount of numbers. For example, 1,2,5,4,8 would have a median of 4.

<em>(1 + 2 + 4 + 5 + 8 = 20 ÷ 5 = 4)</em>

Your dot plot has 14 total numbers, meaning that you add up all the numbers and divide by 14.

16 + 17 + 17 + 17 + 17 + 19 + 19 + 19 + 19 + 21 + 22 + 22 + 23 + 25 = 273

273 ÷ 14 = 19.5

If you don't need to round, 19.5 is correct. However, if you need to round my best guess is 20. Good luck!

7 0
3 years ago
How many 8s are in 888?​
Verizon [17]

Answer:

Theres 3, 8 8 8

or 111, 111*8=888.

Two correct answers

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Grace’s catering company receives an order for 118 Apple pies. Grace used 8 Apples to make one apple pie. How many apples does s
luda_lava [24]
Tha answer is 15 apple pies. Divide 118 pies by 8 apples. You will get 14 and a remainder. Add one more to the quotient.
5 0
3 years ago
Read 2 more answers
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