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butalik [34]
3 years ago
5

I will give brainliest!!!!!!!!!

Mathematics
2 answers:
sergiy2304 [10]3 years ago
3 0
15
If it’s not message me I’ll give u the answer
belka [17]3 years ago
3 0

Answer:

rate of change  = 3/2 or 1.5

Step-by-step explanation:

Rate of change = y2/x2 - y1/x1

=> Rate of change = 6/4 - 3/2

=> Rate of change = 6-3 / 4-2

=> Rate of change = 3/2

=> 3/2 = 1.5

So, the rate of change  = 3/2 or 1.5

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The half life of a certain substance is about 4 hours. The graph shows the decay of a 50 gram sample of the substance that is me
olga55 [171]
I can't see how any of those formulas show exponential decay.  (Did you type those correctly?)

The formula that will show the remaining amount correctly is:
ending amount = Bgng Amount / 2^n
where "n" is the number of haf-lives.

So, for example if half life = 4 hours and if we want to calculate the amount after 9 hours (that's 2.25 half-lives) then:
ending amount = Bgng Amount / 2^n
ending amount = 50 / (2^(9/4))
ending amount = 50 / 2^2.25
ending amount = 50 / <span><span><span>4.75682846 </span>
</span></span><span><span>ending amount = </span> 10.5112 grams
</span>Looking at the graph, we see that's about right.
 

7 0
3 years ago
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The volume of a solid right pyramid with a square base is V units3 and the length of the base edge is y units.
Evgen [1.6K]

Answer:

Height of the pyramid = 3v/y² units

Step-by-step explanation:

We are given;

- The volume of a solid right pyramid with a square base = v units³

- The length of the base edge = y units

The formula for volume of a pyramid is given as;

V = ⅓ x base area x height.

Since the base is square, we will use the formula for square area which is A = side × side.

Thus, v = ⅓ × (y × y) × height

Making height the subject, we have;

Height = 3v/y²

height of the pyramid would be given by the expression 3v/y² units

5 0
3 years ago
Express this number in standard form.<br> 3.868×10 ​9=?
Phantasy [73]
3,868,000,000 is your answer. Move the decimal to the right 9 times. That gives you 6 extra 0’s.
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Find the cosine of ∠J.
expeople1 [14]

Answer:

\cos =  \frac{base}{hypotenuse}  =   \\ \cos(j)  =  \frac{ \sqrt{29} }{ \sqrt{94} }    =   \sqrt{ \frac{29}{94} }  \\ answer =  \sqrt{ \frac{29}{94} }

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Factor using GCF and Area Model: 2x^2+34x+140
elena-14-01-66 [18.8K]

Answer:

The Greatest Common Factor is 2

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3 years ago
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