Hi there
Replace the blank space by x
so x/7 > 800
All you have to do is cross-multiply
x > 7*800
x> 5600
I hope that's help !
F(x)=∛x
The domain will be all real numbers.
Answer: A) all real numbers.
Ej: if x=-8 ⇒∛-8=-2
The information about the rational numbers and integers shows that the correct option is C.
<h3>How to explain the information?</h3>
It should be noted that rational numbers are numbers where we can write as a fraction of two integers. Any rational number is in the form a/b where a,b are integers and b is nonzero.
Terminating decimals can be written as a rational number. Something like 3.1 is equivalent to 31/10.
Of the four answer choices, only choice C is correct.
Choice A has the value '3' as a rational number, but it doesn't have it in the set of integers as well. So that's why choice A is incorrect.
Choice B has -3.4 in the set of integers, which is not correct. Integers do not have any decimal portion. The same applies to choice D also. We can rule choices B and D out.
Therefore, the correct option is C.
Learn more about integers on:
brainly.com/question/17695139
#SPJ1
Answer:
22 hours (B)
Step-by-step explanation:
John's velocity = 55mph
Sally's velocity = 65mph
John's time taken = x
Sally's time taken = x - 4
since they must cover the same distance.
and, distance = vel × time
Sally's vel × time = John's vel × time
55x = 65(x-4)
55x = 65x - 220
-10x = -220
x = 22 hours.
Therefore, Sally catches up after 22 hours
Answer:
b) log8 4 + log8 a + log8 (b- 4) - 4 log8 c
Step-by-step explanation:
The given expression is log8 4a ((b - 4) ÷ c^4)
Here we have to use the quotient rule.
log(a/b) = log a - log b
log8 4a (b- 4) - log8 4a(c^4)
Using the product rule log(ab) = log (a) + log (b)
log8 4a + log8 4a(b-4) - log8 4a - log8 (c^4)
log8 4a(b - 4) - log8 (c^4)
log8 4a + log8 (b- 4) - 4 log8 c
Again using the product rule.
log8 4 + log8 a + log8 (b- 4) - 4 log8 c
So it is b.
Thank you.