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just olya [345]
3 years ago
7

Last week John made/has $50.00 from playing the lottery. This week he lost $25.00 playing the same lottery game. What is his per

cent of change between last week 20. and this week? First find the difference, the amount of change in John's money, then find the percent of change for how much money John now has.
Mathematics
1 answer:
KiRa [710]3 years ago
6 0

Answer:

He lost 50% and he was 25 left I think

Step-by-step explanation:

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A class of 144 students voted for a class president. Three fourths of the students voted for you. Of the students who voted for
Alla [95]
20;

144/4=36

36/9=4

4x5=20
3 0
3 years ago
What is the median of Variable A? Express answer to one decimal place. <br> _____ Fill The Blank
skelet666 [1.2K]
The median is the number that is in the middle of the set of numbers in order from least to greatest.  So in this case we have...1,2,4,4,5,6,7,9 and you cross out one from the left one from the right over and over until you are left with one or two numbers
LOOK AT ATTACHMENT!!!

Now that we have narrowed it down to 4 and 5, we need to add them together (9) then divide it by 2 which would give you the answer of 4.5

So the median of Variable A is 4.5

8 0
3 years ago
The mean annual tuition and fees for a sample of 14 private colleges in California was $37,900 with a standard deviation of $7,2
JulijaS [17]

Answer:

Z_{0.005}>Z H₀ is wrong and other is correct. IT means $35000 is not mean value.

Step-by-step explanation:

Two hypothesis:

H₀=$35,000

Hₐ≠$35,000

Test Formula:

Z=\frac{(X-u)}{\frac{S}{\sqrt{n} } }

Where:

X is the mean value=$37,900

u is the value with 0.01 significance=$35000

S is the standard deviation

n is the sample size

Z=\frac{(37900-35000)}{\frac{7200}{\sqrt{14} } }

Z=1.507

Z with 0.01 significance:

0.01/2=0.005=0.05%

Degrees of freedom=14-1=13

From t distribution table at 0.05% and 13 dof:

Z_{0.005}=4.221

So

Z_{0.005}>Z H₀ is wrong and other is correct. IT means $35000 is not mean value.

7 0
4 years ago
Determine which number is a solution of the inequality. 0.2 &lt; b
Lerok [7]
Answer: A) 4

.2 is less than 4, therefore answer A. is correct
3 0
4 years ago
Read 2 more answers
Help me with this please!!
Artist 52 [7]

Answer:

x=17

Step-by-step explanation:

7x+10+3×=180

10x+10=180

-10. -10

10x/10=170/10

x=17

3 0
3 years ago
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