Answer:
Distributive property is to divide because the meaning of "distribute" is to divide something or part of something.
Example: 3(4+8) = 36
You have to add the numbers first before multiplying since there are parenthesis. Usually, in the distributive property you will always see parenthesis.
Answer:
B is the right answer
Step-by-step explanation:
The present cost
$22.20
Explanation:
Represent the cost of the present by the variable
c
We are told
XXX
3
5
×
c
=
$
13.32
(this is the requested equation)
Multiplying both sides by
5
3
(to get rid of the fraction on the right side)
XXX
5
3
×
3
5
×
c
=
$
13.32
$
4.44
×
5
3
XXX
→
c
=
$
22.20
Answer:
0.2207
Step-by-step explanation:
Here, we want to find the probability that the sample mean is greater than 25.
What we use here is the z-scores statistic
Mathematically;
z-score = (x-mean)/SD/√n
From the question;
x = 65, mean = 63, SD = 13 and n = 25
Plugging these values in the z-score equation, we have
Z-score = (65-63)/13/√25 = 2/13/5 = 0.77
So the probability we want to calculate is ;
P(z > 0.77)
This can be obtained from the standard normal distribution table
Thus;
P(z > 0.77) = 0.22065 which is 0.2207 to 4 d.p
mj thinks of a number. she adds 2 to the number then multiples the result by 3. The answer is the same as adding 5 to the number them multiplying by 2
my number is d
3 (d×2) = 2 (d+5)
3×d + 3×2 = 2×d + 2×5
3d + 6 = 2d + 10
3d +6 -6 -2d = 2d - 10 - 6
3d - 2d = 10 - 6
d = 4
