3 years ago

Explain why should record a 1 in the tens column when you regroup in an addition problem

1 answer:

8 0

Well you only do that when you are in the ones place and you have to regroup a 1in the tens place if you go past 19 then you are going to have to regroup a 2

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Find the size of the angle using Sohcahtoa or Pythagoras.

lisov135 [29]

Answer:

x ≈ 38.7°

Step-by-step explanation:

Using the sine ratio in the right triangle

sinx = $\frac{opposite}{hypotenuse}$ = $\frac{5}{8}$ , then

x = $sin^{-1}$ ( $\frac{5}{8}$ ) ≈ 38.7° ( to 1 dec. place )

6 0

2 years ago

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mixer [17]

Answer:

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Step-by-step explanation:

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Alla [95]

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Step-by-step explanation:

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3 years ago

A dose of a new pharmaceutical drug is decaying according to the half-life model f(t) = Ne-0.2174, where N is the dose

Rudiy27

Answer:

14.7

Step-by-step explanation:

Perhaps your equation is ...

f(t) = N·e^(-0.2174t)

We want f(6) = 4, so ...

4 = N·e^(-0.2174·6) = N·e^-1.3044 ≈ 0.2713N

N = 4/0.2713 = 14.7 . . . . milligrams

The dose amount was about 14.7 mg.

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3 years ago

If f(x) = 2x−5, then what is the value of f(2) + f(5)

DochEvi [55]

First of all f(2)=2(2)-5=-1 and f(5)=2(5)-5=5
so
f(2)+f(3)=-1+5=4

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3 years ago