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2 years ago

For every 2 cups of sugar in the cookie recipe, there are 5 cups of flour.

Mathematics

1 answer:

pashok25 [27]2 years ago

8 0

Answer:

2:5

Step-by-step explanation:

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Suppose the time a child spends waiting at for the bus as a school bus stop is exponentially distributed with mean 7 minutes. De

Gala2k [10]

Answer:

The probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning is 0.148.

Step-by-step explanation:

Let the random variable X represent the time a child spends waiting at for the bus as a school bus stop.

The random variable X is exponentially distributed with mean 7 minutes.

Then the parameter of the distribution is, $\lambda=\frac{1}{\mu}=\frac{1}{7}$ .

The probability density function of X is:

$f_{X}(x)=\lambda\cdot e^{-\lambda x};\ x>0,\ \lambda>0$

Compute the probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning as follows:

$P(6\leq X\leq 9)=\int\limits^{9}_{6} {\lambda\cdot e^{-\lambda x}} \, dx$

$=\int\limits^{9}_{6} {\frac{1}{7}\cdot e^{-\frac{1}{7} \cdot x}} \, dx \\\\=\frac{1}{7}\cdot \int\limits^{9}_{6} {e^{-\frac{1}{7} \cdot x}} \, dx \\\\=[-e^{-\frac{1}{7} \cdot x}]^{9}_{6}\\\\=e^{-\frac{1}{7} \cdot 6}-e^{-\frac{1}{7} \cdot 9}\\\\=0.424373-0.276453\\\\=0.14792\\\\\approx 0.148$

Thus, the probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning is 0.148.

6 0

2 years ago

What is the slope pls help

Galina-37 [17]

Answer:

y=.5x+-2.5

Step-by-step explanation:

This is the linear equation (y=mx+b) m means slope so your slope is .5.

7 0

2 years ago

I need help with this please:/

ser-zykov [4K]

4.5
pi is about 3.14 and root 23 is about 4.8 - the only number between these values is 4.5

7 0

2 years ago

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Jason consumes 1500 calories and needs to

Lubov Fominskaja [6]

Answer:

100*150=15000 calories

Step-by-step explanation:

100 times 150 is 15000 because you are multipling 2 people

I don't know if it is correct

just check and if it isn't then check some one elses work.

6 0

2 years ago

Whats 1+1+2+2+3+3+4+4+5+5+6+6+7+7+8+8+9+9

k0ka [10]

Answer:

90 is your answer

Step-by-step explanation:

first I just added all similar numbers together, then I added the answers of all the similar numbers together one-by-one, finally we find our answer, 90

3 0

2 years ago

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