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Alona [7]
3 years ago
12

Can someone please help!!! Sec. 12.7 #78

Mathematics
2 answers:
Oksana_A [137]3 years ago
8 0
Question please I can’t see 1
gizmo_the_mogwai [7]3 years ago
3 0
Theres nothikg to see
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Solve the following question
Anna11 [10]

Answer:

they are 16 and 4

Step-by-step explanation:

We can call the numbers x and y and we can write:

x - y = 12

x + y = 20

Adding these equations gives us 2x = 32 which means x = 16 and substituting this value into the first equation gives us y = 4.

7 0
2 years ago
Read 2 more answers
An ice cream truck began its daily route with 95 gallons of ice cream. The truck driver sold 78% of the
Brilliant_brown [7]

Answer:

74.1 or 74

Step-by-step explanation:

3 0
2 years ago
A researcher wants to investigate whether there is a relationship between annual company profit ($) and median annual salary pai
ahrayia [7]

Answer:

D. There is not convincing evidence of a relationship between annual company profit and median annual salary paid by the company.

Step-by-step explanation:

In this hypothesis test, the null hypothesis usually states that there is no relationship between the two variables in study.

In opposite, the claim that is being tested is the speculative hypothesis: that there is a significant relationship between both variables.

The researcher takes a sample and the P-value indicates the probability of getting that sample by pure chance <em>if the null hypothesis is true</em>.

Then, a very small P-value, below the significance level, indicates that the sample is very unusual if the null hypothesis is true, what gives evidence to reject the null hypothesis.

In this case, a P-value of 0.56 indicates that the sample is not unusual if the null hypothesis is true, so it gives no support to the claim that the null hypothesis is false and that there exists a relationship between the two variables in study.

6 0
3 years ago
POSSIBLE POINTS: 5
Bumek [7]

Answer:

176/231

Step-by-step explanation:

88 blue marbles, 55 green marbles, and 88 red marbles =231 marbles

P (blue or red marble) = number of red or blue/ total

                                     = 88+88 / 231

                                      =176/231

4 0
2 years ago
You put 10000 dollars in a simple interest account at a bank you will earn 1800 dollars in just 4 years what is the annual inter
maxonik [38]
R=i/pt=1800/10000*4=0.045*100=4.5%
3 0
3 years ago
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