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Romashka [77]
2 years ago
10

Question 15(Multiple Choice Worth 5 points)

Mathematics
1 answer:
ExtremeBDS [4]2 years ago
5 0

Answer:

1 is the answer you needed

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X+2y=10<br> X+y=6<br> Using eliminations to solve each system
Svetllana [295]

Answer:

x= 2

y=4

Just subtract by like numbers.

7 0
2 years ago
Read 2 more answers
2. What is the sample proportion of heads in your sample of 40? Report this value to your teacher.
Alexeev081 [22]

Answer:

\frac{18}{40}=0.45

Though it may vary, it's going closer to 0.5 as long as we enlarge our sample.

Step-by-step explanation:

1) Since a coin has heads and tails, then a sample proportion of 40 we can simulate it using some applets.

2) Here are the most common outcomes, as long as we continue on flipping coins.

\frac{18}{40}=0.45

If we continue enlarging our sample (80, 120,160...) the probability goes closer to 0.5

This shows: the theoretical probability goes closer and closer to the experimental probability of heads and tails

S_{80}=0.503\\S_{120}=0.50

6 0
3 years ago
What is the final amount if 975 is increased by 1% followed by a further 9% increase?
alexgriva [62]
975 x 1.01 = 984.75
984.75 x 1.09 = 1073.38
3 0
3 years ago
What percentage of 70 is 2.5?​
drek231 [11]
1.5 would be the answer I think
7 0
3 years ago
What is the constant of proportionality in the equation y = 5/9 x ?
Mazyrski [523]

The constant of proportionality is 5/9

y= kx  where k is the constant of proportionality

y = 5/9 x

k = 5/9

6 0
3 years ago
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