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podryga [215]
3 years ago
5

REALLY EASY NEED ANSWER BY 10:00 P. M. AND WILL GIVE BRAINLEIST. PLS HURRY IF YOU HAVE TIME PLEASE ANSWER OTHER QUESTIONS PLS TH

ANK YOU.
Write about a real-world situation that can be represented by the equation y=7x. Be sure to explain what the variables represent in the situation.
Mathematics
1 answer:
UNO [17]3 years ago
7 0

Answer:

for every cinnamon bun, 7 pennies were given to the orphanage.

x: amount given to orphanage

y: cinnamon bun

(hope you do well... i think this would work :/)

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PLEASE HELP HELP HELP HELP HELP
iragen [17]

Answer:

here

Step-by-step explanation:

can you give me brainliest

5 0
3 years ago
A drug is eliminated from the body through urine. Suppose that for a dose of 10 milligrams, the amount A(t) remaining in the bod
adell [148]

Answer: a - 4.512 hours

b - 1.94 hours

Step-by-step explanation:

Given,

a) A(t) = 10 (0.7)^t

To determine when 2mg is left in the body

We would have,

A(t) = 2, therefore

2 = 10(0.7)^t

0.7^t =2÷10

0.7^t = 0.2

Take the log of both sides,

Log (0.7)^t = log 0.2

t log 0.7 = log 0.2

t = log 0.2/ 0.7

t = 4.512 hours

Thus it will take 4.512 hours for 2mg to be left in the body.

b) Half life

Let A(t) = 1/2 A(0)

Thus,

1/2 A(0) = A(0)0.7^t

Divide both sides by A(0)

1/2 = 0.7^t

0.7^t = 0.5

Take log of both sides

Log 0.7^t = log 0.5

t log 0.7 = log 0.5

t = log 0.5/log 0.7

t = 1.94 hours

Therefore, the half life of the drug is 1.94 hours

6 0
3 years ago
If there are 40% of girls and 250 are boys, find
oee [108]

Step-by-step answer:

If there are 40% students that are girls , and the rest are 250 boys. Then that must mean there are 60% boys. Because that is the compliment.

i)

Because we know that 60% of the people in the group are boys, and that the amount of boys amounts to 250, we can model an equation like this.

Total * 0.6 = 250.

Total = 250/0.6

Total = 417

There are 417 students

ii)

Because we know that the total amount is 417, we can find the amount of girls there are by multiplying the total by the percentage.

417 * 0.4 = 167

There are 167 students that are girls.

8 0
2 years ago
Which angle measures would make a triangle with three equal side lengths
Verizon [17]

Answer:

60

Step-by-step explanation:

If each side length must be identical, the same must be true for angles. If all the angles added are 180, divide 180 by 3 to get 60.

4 0
4 years ago
Read 2 more answers
What's the GCF of 20, 28, 24
zimovet [89]
The answer would be 4
8 0
3 years ago
Read 2 more answers
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