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Inessa [10]
3 years ago
11

PLEASE HELP IM STUPID IDK HOW IM IN 7th GRADE BUT WHATEVA IM NOT DUMB HALF OF THE TIME

Mathematics
1 answer:
Dovator [93]3 years ago
3 0
The probability is 9 put of 28 u add them all up that's ur total and then the number of blue bags of yarn is the chance you'll get
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If the area of the rectangle shown is 150 square feet, we can use the equation 2x2 - 5x = 150 to find its dimensions. If the sol
Serjik [45]
X=-150 or X=-146/5 I think.
7 0
3 years ago
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Initially, 50 pounds of salt are dissolved in a large tank holding 300 gallons of water. A brine solution with a concentration o
kirill [66]

Answer:

dA / dt = 6 - A (t) / 100

600

Step-by-step explanation:

We have to:

dA / dt = In - Out

Input = input salt concentration * input rate of brine

replacing

Inlet = 2 lb / gal * 3 gal / min = 6 lb / min

there is no build up because the inlet flow equals the outlet, so there are 300 gallons in the tank at the start

Output: salt concentration at the output * output rate of brine

replacing

Output: A (t) / 300 * 3 gal / min = A (t) / 100

Thus:

dA / dt = 6 - A (t) / 100

this would be the differential equation.

now, when time tends to infinity, we would be left with:

100 * dA / dt = 600 - A (t)

When t tends to infinity, A (t) tends to 0, therefore, the amount of salt would be 600.

4 0
3 years ago
According to the Marshall’s survey, 80 sixth graders, or 40% of the students in sixth grade like to have school remote. How many
maxonik [38]
200 is the answer i know this because 40%of 200 is 80
8 0
2 years ago
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Please help im on dead line
Serjik [45]

Answer: C

Step-by-step explanation:

It is C because you are adding money to something you already have, hence positive integer

8 0
2 years ago
If you read can read 40 pages in 2 hours, how many pages can you read in 5 hours?
Pavlova-9 [17]
You can read 100 pages in 5 hours.

40 pages in 2 hours. We need to get the unit rate. In this case, we need to get the number of pages read in 1 hour.

40 pages ÷ 2 hours = 20 pages per hour.

20 pages per hours * 5 hours = 100 pages.
3 0
3 years ago
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