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Alexandra [31]
3 years ago
7

Each week, Cody earns $15 and spends $12. Which table can you use to determine how much money Cody will save in 6 weeks?

Mathematics
1 answer:
Annette [7]3 years ago
8 0

Answer:

$18

Step-by-step explanation:

15 x 6 = 90

12 x 6 = 72

90 - 72 = 18

He saves 18 dollars

There are no pictures with the multiple choice answers.

My guess would be a line graph

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Jason inherited a piece of land from his great-uncle. Owners in the area claim that there is a 45% chance that the land has oil.
Licemer1 [7]
So,

We are trying to find the compound probability of there BEING oil and the test predicting NO oil.

The percent chance of there actually being oil is 45%.  We can convert this into fraction form and simplify it.

45% --> \frac{45}{100}

\frac{45}{100}--\ \textgreater \  \frac{3*3*5}{2*2*5*5}

\frac{3*3*5}{2*2*5*5}--\ \textgreater \ \frac{3*3}{2*2*5}

\frac{3*3}{2*2*5}--\ \textgreater \  \frac{9}{20}

That is the simplified fraction form.

The kit has an 80% accuracy rate.  Since we are assuming that the land has oil, we need the probability that the kit predicts no oil.  

The probability that the kit detects no oil will be the chance that the kit is not accurate, which is 20% (100 - 80 = 20).  We can also convert this into fraction form and simplify it.

20% --> \frac{20}{100}

\frac{20}{100}--\ \textgreater \ \frac{2}{10}

\frac{2}{10}--\ \textgreater \ \frac{1}{5}

That is the probability of the kit not being accurate (not predicting any oil).

To find the compound probability of there being oil and the kit not predicting any oil, we simply multiply both fractions together.

\frac{9}{20}*\frac{1}{5}

\frac{9}{20*5}

\frac{9}{100}

So the probability of there BEING oil and the kit predicting NO oil is 9 in 100 chances.
3 0
3 years ago
Read 2 more answers
What is the median of this data set?
spin [16.1K]

Answer:

4.5

Step-by-step explanation:

6 0
3 years ago
Divide (-3x+4+18x^2) by (5+6x)
Leno4ka [110]
I'm pretty sure this is right

7 0
3 years ago
Which equation shows y+1/5=3x in standard form?
xz_007 [3.2K]
I hope this helps you

3 0
3 years ago
Find the residual if you know the actual number is 3 and the predicted value is 1.6
IgorC [24]

Answer:

The correct option is A.

Step-by-step explanation:

The difference between actual value and predicted value is called residual.

Formula of residual is

e=y-\hat{y}

Where, y is observed value or actual value and \hat{y} is predicted value.

e=3-1.6

e=1.4

The value of residual is 1.4 and option A is correct.

5 0
3 years ago
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