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tatyana61 [14]
3 years ago
6

Need help ASAP

Mathematics
1 answer:
iragen [17]3 years ago
8 0

Answer:

75

Step-by-step explanation:

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2. The number of atoms of a particular chemical element is modelled by
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9514 1404 393

Answer:

  a) 600

  b) see below

  c) 1.26 hours

Step-by-step explanation:

a) The value of y when x=0 is the coefficient of the exponential term:

  y = 600·3^(-0) = 600·1 = 600

There were 600 atoms to start.

__

b) see attached for a graph

__

c) The graph shows 150 atoms at t = 1.26, about 1.26 hours after the start of time counting.

If you want to find that value algebraically, substitute for y and solve for x. Logarithms are involved.

  150 = 600·3^(-x)

  150/600 = 3^(-x)

  log(1/4) = -x·log(3)

  x = -log(1/4)/log(3) = log(4)/log(3) ≈ 1.2618595

After about 1.26 hours, there were 150 atoms.

6 0
3 years ago
Which line has an y-intercept of -1
torisob [31]
Boi. This is the easiest question i've ever answered. The line that crosses the y-axis at the point (0,-1) (the line on the right)
6 0
4 years ago
Can someone please help me answer these 2 questions with a full explanation of how you got the answer so I can do the rest mysel
finlep [7]

(a) The measure of the indicated angle for figure 1 is 48⁰.

(b) The measure of the indicated angle for figure 2 is 42⁰.

<h3>Measure of the indicated angle</h3>

The measure of the indicated angles can be calculated as follows;

<h3>Figure 1</h3>

sinθ = opp/hypo

sinθ = 72/97

sinθ = 0.7423

θ = sin⁻¹(0.7423)

θ = 47.9⁰ ≈ 48⁰

<h3>Figure 2</h3>

sinθ = 65/97

sinθ = 0.6701

θ = sin⁻¹(0.6701)

θ = 42.1⁰ ≈ 42⁰

Learn more about angles here: brainly.com/question/25770607

#SPJ1

7 0
2 years ago
Read 2 more answers
Best estimate of the total spent, not including tax 6.52 + 19.89 + 21.15
maw [93]

Answer:

47.56

Step-by-step explanation:

5 0
3 years ago
Given the points (5,4) and (10, 11)<br> a.what is the slope? <br> b.what is the y-intercept?
hammer [34]
7 over 5
Have a nice day
:)
7 0
4 years ago
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