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3 years ago

8

Please help A=23 B=27 C=22 D=108/4

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2 answers:

Musya8 [376]3 years ago

7 0

Answer:

$\frac{3}{4}$ = $\frac{a}{36}$ A = 27

brainliest?

alexira [117]3 years ago

3 0

What’s the question?

there is just choices

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Bailey has a teddy bear collection. 5 of the bears are pink this is 25% of all of her bears. How many total bears does she have

Elden [556K]

Answer:

Bailey has 20 total bears.

Step-by-step explanation:

She has 20 bears because 25% of 20 is 5. Or 5x4=20

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3 years ago

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Ella has 0.5 lbs of sugar. How much water should she add to make the following concentrations? Tell Ella how much syrup she will

HACTEHA [7]

Ella has to add 32.833 lbs of water to get 33.333 lbs of syrup.

<u>Solution:</u>

Ella has 0.5 lbs of sugar. Let x lbs be the amount of water Ella should add to get the 1.5% of syrup,

$\Rightarrow0.5\text{ lbs }- 1.5\%$

$\Rightarrow x+0.5\text{ lbs }- 100\%$

On writing the proportion,

$\Rightarrow\dfrac{0.5}{x+0.5}=\dfrac{1.5}{100}\\ \\\Rightarrow0.5\cdot 100=(x+0.5)\cdot 1.5\\ \\\Rightarrow50=1.5x+0.75\\ \\\Rightarrow1.5x=50-0.75\\ \\\Rightarrow1.5x=49.25\\ \\\Rightarrow x=\dfrac{49.25}{1.5}\approx 32.833\ lbs$

To get 1.5% syrup Ella should add 32.833 lbs of water. The total weight of syrup is 33.333 lbs.

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3 years ago

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Andrej [43]

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3 years ago

Customers arrive at a grocery store at an average of 2.1 per minute. Assume that the number of arrivals in a minute follows the

Black_prince [1.1K]

Answer:

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b) P(X>3)=0.605

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Step-by-step explanation:

We know that customers arrive at a grocery store at an average of 2.1 per minute. We use the Poisson distribution:

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Therefore, the probability is P(2)=0.270.

b) In this case: $\lambda=2\cdot 2.1=4.2$

$P(X>3)=1-P(X\leq 3)\\\\P(X>3)=1-\sum_{x=0}^3 \frac{4.2^x \cdot e^{-4.2}}{x!}\\\\P(X>3)=1-0.395\\\\P(X>3)=0.605$

Therefore, the probability is P(X>3)=0.605.

c) We know that two customers came in in the first minute. That is why we calculate the probability of at least 5 customers entering the other 2 minutes.

In this case: $\lambda=2\cdot 2.1=4.2$

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3 years ago

If i read 60 pages in 1 5/12 hours how long will it take me to read 120 pages

zysi [14]

Answer:

Step-by-step explanation:

Direct proportion

60: 1 5 /12 = 120 : x

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Product of extremes = product of mean

60*x = (17/2)*120

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It will take 2 5/6 hours to read 120 pages

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3 years ago