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2 years ago

13

Bradon played basketball he made 3/5 of the points the 1st game the team made 60 points and 40 points in the second game how man

y points did bradon make

1 answer:

Leno4ka [110]2 years ago

8 0

Answer:

I dont know sorry

Step-by-step explanation:

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if you rolled a die, what is the probability that you would roll a 4? (simplified fraction as an answer pls)

Ipatiy [6.2K]

The answer would probably be 2/5

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2 years ago

All numbers between 1 and 2 are rational numbers true or false

Novosadov [1.4K]

Given that

1:2

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2 years ago

Andre tried to solve the equation 1/4(x+12)=2 what was his mistake?

GarryVolchara [31]

Step-by-step explanation:

1. 1/4(x + 12)=2 - first isolate X'

- 12 -12

2. 1/4(x) = -10 - 1/4 since its a fraction, you'll have to subtract not divide

-1/4 - 1/4

3. x = -10.25

Andre did the first step correctly, but on the second step he just divided 1.4 by -10, instead of subtract 1/4 from both sides.

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2 years ago

A teacher was interested in knowing the amount of physical activity that his students were engaged in daily. He randomly sampled

klasskru [66]

Answer:

The standard error of the mean is 4.5.

Step-by-step explanation:

As we don't know the standard deviation of the population, we can estimate the standard error of the mean from the standard deviation of the sample as:

$\sigma_{\bar{x}}\approx\frac{s}{\sqrt{n}}$

The sample is [30mins, 40 mins, 60 mins, 80 mins, 20 mins, 85 mins]. The size of the sample is n=6.

The mean of the sample is:

$\bar{x}=\frac{1}n} \sum x_i =\frac{30+40+60+80+20+85}{6}=52.5$

The standard deviation of the sample is calculated as:

$s=\sqrt{\frac{1}{n-1}\sum (x_i-\bar x)^2} \\\\ s=\sqrt{\frac{1}{5}\cdot ((30-52.5)^2+(40-52.5)^2+(60-52.5)^2+(80-52.5)^2+(20-52.5)^2+(85-52.5)^2}\\\\s=\sqrt{\frac{1}{5} *3587.5}=\sqrt{717.5}=26.8$

Then, we can calculate the standard error of the mean as:

$\sigma_{\bar{x}}\approx\frac{s}{\sqrt{n}}=\frac{26.8}{6}= 4.5$

6 0

2 years ago

Whats the answer for this problem 8x+y=-16 <br> -3x+y=-5

marissa [1.9K]

<span><span> {x,y} = {-7/4,-2}</span>

Explanation:
</span>System of Linear Equations entered :
[1] 8x+y=-16
[2] -3+y=-5

Equations Simplified or Rearranged :<span><span>
[1] 8x + y = -16 </span><span>
[2] y = -2

Regards
Sonny
</span></span><span>
</span>

8 0

3 years ago