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3 years ago

8

During the summer Frank earned $60 less than three times as much as his brother Fred. Together they earned $1220. How much did t

hey each earn?

1 answer:

PtichkaEL [24]3 years ago

6 0

Answer:

320, 900

Step-by-step explanation:

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Data were collected on random specimens of Yellowfin tuna from 1991 and 2010. For the sample of 231 specimens of Yellowfin tuna,

Molodets [167]

Answer:

95% confidence interval: (0.325 ,0.383)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 231

Sample mean = 0.354 ppm

Sample standard deviation = 0.231 ppm

95% confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 4 and}~\alpha_{0.01} = \pm 1.97$

$0.354 \pm 1.97(\dfrac{0.231}{\sqrt{231}} ) = 0.354 \pm 0.029 = (0.325 ,0.383)$

6 0

3 years ago

Solve each inequality then graph the solution

Artist 52 [7]

Answer:

a is x>3

b is _> x/4 +12

c is x>-3

Step-by-step explanation: hope this helps

4 0

3 years ago

Please help me with this I need this done!!!

mote1985 [20]

Answer:

1=1

2=4

3= <NTR=115

<RTM=45

<STN=45

4= A-124

B-45

C-45

D-90

E-124

5=15

6=?

Step-by-step explanation:

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8 0

3 years ago

NEED HELP ASAP ITS TIMED

Arturiano [62]

B. 39

Good luck on yourself timed exam!

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3 years ago

Can u HELP me on all

Alekssandra [29.7K]

How many are there because there is no pic

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3 years ago