Answer:You didn't specify what you need? :) If you add it in comments I'll gladly answer! But if you're asking the difference, it decreased by 75!
Hope this helps! If it did, please mark brainliest <3
Edit:
To find the percentage, do:
550/625= 0.88
1-0.88= 0.12
The difference is 12% decrease
Answer:
Step-by-step explanation:
The x intercepts are obtained by equating the factors to zero.
2x - 1 = 0
2x = 1
x = 1/2
2x - 5 = 0
2x = 5
x = 5/2
x = 2 1/2 or 2.5
The graph of f(x) = (2x -1)*(2x - 5) is given below. The x intercepts are labeled.
Answer:
x=8
Step-by-step explanation:
5(x+2)=6x+3x-14
5x+10=6x+3x-14. distributive property
10+14=8x-5x. combine like term
24=3x. addition and subtraction property
24/3 = 3x/3. division property
8=x
> x = 8
Answer:
average = 52, 100 on fourth test
Step-by-step explanation:
average = 75 + 74 + 71 = 156 / 3 = 52
average = 52
b grade = 75 + 74 + 71 + 100 = 320 / 4 = 80
to get a b grade she must get 100 on her fourth test
Answer:
b)The sample size is large enough to use the normal approximation.
Step-by-step explanation:
In one case when sample size is very large usually, the Normal Distribution can be used to calculate an approximate probability of an event. The explanation of this is expained by the Central Limit Theorem which states that when we have a sample size is large, the sampling distribution of means converge to a normal distribution (approximately) and on this way:
The Binomial distribution can be approximated using a Normal Distribution in case when sample size is large. We can consider a sample size is large when we have these two conditions:
np > 10 and n(1-p)>10,
On this case we can assume the random variable
If we check the conditions:
np=493*0.05=24.65>10
n(1-p)=493*(1-0.05)=468.35>10
So then we can conclude that b)the sample size is large enough to use the normal approximation.