Answer:
The solution for the expression is choice D 26√5 +2√10
Step-by-step explanation:
Hello!
First, apply distributive law: a(b+c)= ab+ac
- 2√5(13+√2) ....given expression
- 2√5.13 +2√5.√2...multiply the numbers
- 2.13=26
- √5.√2=√10
- 26√5 +2√10
Answer:
C
Step-by-step explanation:
To form a proportion, you need two equal ratios.
Divide the numerator by the denominator of all fractions.
Any two fractions that are equal are a proportion.
A.
4/9 = 0.4444...
9/4 = 2.25
Fractions are not equal. Not a proportion.
B.
4/10 = 0.4
10/25 = 0.4
Fractions are equal. Proportion
C.
4/11 = 0.363636...
6/13 = 0.46153846...
Fractions are not equal. Not a proportion.
D.
I can't read the fractions, but do the same I did above.
Divide each numerator by the denominator and compare the decimals. If they are equal its a proportion. If theya re not equal, it is not a proportion.
Answer: Yes, there are enough popcorn for eight 9- ounce bags.
Step-by-step explanation:
Since we have given that
From Machine A,
Amount of popcorn in 3 minutes = 12.75
Amount of popcorn in 1 minute is given by
Amount of popcorn in 10 minutes is given by
From Machine B,
Amount of popcorn in 4 minutes = 18 ounces
Amount of popcorn in 1 minute is given by
Amount of popcorn in 10 minutes is given by
Total amount of popcorn is given by
Now, there are eight 9-ounce bags means 72 ounces
Since 87.5 ounces is greater than 72 ounces .
So, there are enough for eight 9-ounce bags.
F: R → R is given by, f(x) = [x]
It is seen that f(1.2) = [1.2] = 1, f(1.9) = [1.9] = 1
So, f(1.2) = f(1.9), but 1.2 ≠ 1.9
f is not one-one
Now, consider 0.7 ε R
It is known that f(x) = [x] is always an integer. Thus, there does not exist any element x ε R such that f(x) = 0.7
So, f is not onto
Hence, the greatest integer function is neither one-one nor onto.
The answer was quite complicated but I hope it will help you.
It’s the 3rd one hopefully this helps
