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VMariaS [17]
2 years ago
12

Which is a step when multiplying or dividing numbers written in scientific notation?

Mathematics
2 answers:
jok3333 [9.3K]2 years ago
7 0
A, like the other guy said it says it in the answers
Veronika [31]2 years ago
4 0
It’s A
As it says in the answer, you usually add / subtract the exponents when needed.
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A 0.3 ml dose of a drug is injected into a patient steadily for 0.65 seconds. At the end of this time, the quantity, , of the dr
Darya [45]
Use the compound interest formula: A=P(1+i)^t.

P is the initial amount of the drug, 0.3ml.
i is - 0.0035.
t is in seconds.

You'll get:
A=0.3(1-0.0035)^t.

Sub in any value on t to find out how many ml are left t seconds after injection.

The 0.65 second injection time does not seem to be relevant as the question clearly states that the exponential decay starts AFTER the injection is completed.
4 0
3 years ago
PLEASE helppp. What equation describes a line that is perpendicular y=-2/7x+5 and has the same y-intercept as y = 3x - 2?
svp [43]

Answer:

y = 7/2 -2

Step-by-step explanation:

if the slope of the first problem is -2/7 then its perpendicular is 7/2 (the exact opposite) and since the y- intercept is the b in Y= mx +b the intercept of the equation you’re trying to find is -2

6 0
3 years ago
mariah owed her grandfather $2.25 but was only able to pay him back 1.50 , how much does mariah currently owe her grandfather
aleksandr82 [10.1K]

Answer:

0.75 cents

Step-by-step explanation:

You take...

$2.25 and subtract $1.50 to get 0.75 cents

In-depth...

Start off with taking a dollar away...

2.25 - 1.00 = 1.25

Then take off 0.50 cents...

We know that 0.50 cents are two 0.25 cents

So, we take off one 0.25 cent

1.25 - 25 = 1.00

Then the next 0.25 cents

*Remember: twenty-five (.25), fifty (.50), seventy-five (.75), a dollar (1.00)

<--- it is just adding 25 each time

If we subtract 0.25 cents from a dollar we get...

0.75 cents

3 0
2 years ago
Read 2 more answers
Not a school question but, what do you think he meant by that? The ‘m-‘ part
Rzqust [24]

Answer:

Haha, I think they meant man or your bf

4 0
3 years ago
I wanted to see if i was right, can I get a second opinion?
Arisa [49]
15 tickets = $105

105 ÷ 15 = 7
1 ticket costs $7.

$7 x 12 = $84
12 tickets cost $84

Answer: $84 (Answer C)
6 0
3 years ago
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