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babymother [125]
3 years ago
7

Which expression is equal to (3 × 5) × 4?

Mathematics
2 answers:
laila [671]3 years ago
6 0

Answer:

c

Step-by-step explanation:

did the test :)

Nady [450]3 years ago
4 0
The answer should be C
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PLEASE ANSWER THIS ALSO!!!​
svetoff [14.1K]

Answer:

option C. is correct answer it is 2/5

6 0
3 years ago
Read 2 more answers
What is 16,700,000,000,000,000 estimated as the product of a single digit and a power of 10
Vesna [10]
Hello!

Another way to put it would be scientific notation. to do so, you would need to get a digit 1-10 multiplied by 10 to a certain power.

For this problem, scientific notation is 1.67(10^16).

To check our answer,  we will move the decimal to the right sixteen times because the exponent is positive. In other words, we will add fourteen zeros because we need two to turn 1.67 into 167. This gives us 16,700,000,000,000,000, which matches the question. (This number in word form is 16 quadrillion seven hundred trillion.)

Our final answer is 1.67(10^16).

I hope this helps!
6 0
3 years ago
The value of x in the equation log(x-1)9=2 is
mel-nik [20]
\log_{(x-1)} 9=2

the domain:
x-1 >0 \ \land \ x-1 \not=1 \\
x>1 \ \land \ x \not= 2 \\
x \in (1; 2) \cup (2;+\infty)

the equation:
\log_{(x-1)}9=2 \\
(x-1)^2=9 \\
\sqrt{(x-1)^2}=\sqrt{9} \\
|x-1|=3 \\
x-1=3 \ \lor \ x-1=-3 \\
x=4 \ \lor \ x=-2

4 is in the domain
-2 is not in the domain

The answer:
x=4

***
Also, the answer in 13 is {8}. -3 is not in the domain. Replace x with -3 and you'll see:
x=\sqrt{5x+24} \\
-3=\sqrt{5 \times (-3)+24} \\
-3=\sqrt{-15+24} \\
-3=\sqrt{9} \\
-3=3
It's not true so -3 isn't a solution to this equation.
4 0
3 years ago
Read 2 more answers
How do you change 21.5 into a fraction
NikAS [45]
21.5 means 21 and 5 tenths and is read that way.

21.5 = 21 5/10 =(21*10 + 5) /10 = 215/10 = 43/2 in simplest terms
5 0
3 years ago
Read 2 more answers
What is 7 less than m
JulijaS [17]

Answer:

M-7

Step-by-step explanation:

"seven less than m" means you're taking 7 away from the value of m. The equation for this would simply be "M-7".

6 0
3 years ago
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