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tiny-mole [99]
2 years ago
14

Helppppppp meeeeee plzzzz

Mathematics
1 answer:
bulgar [2K]2 years ago
8 0
Non proportional I think. Wait for someone else to answer
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What is the diameter of a circle with a circumference of 132 ft? Use 22/7 for PIE.
Andrej [43]

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42

Step-by-step explanation:

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8. Lucy deposited $1,000 into an account that earns 5% compound interest, compounded annually. How much interest will Lucy earn
Free_Kalibri [48]

Answer:

5 dollars

Step-by-step explanation:

7 0
3 years ago
Th
timama [110]

Answer:

<h2>             b) 10 years</h2>

Step-by-step explanation:

1/20 of 700:  1/20•700 = 35

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8 0
3 years ago
Y=−3(2.5)x
Hoochie [10]

Answer:

1. The equation represent an exponential decay

2. The rate of the exponential decay is -3×2.5ˣ·㏑(2.5)

Step-by-step explanation:

When a function a(t) = a₀(1 + r)ˣ has exponential growth, the logarithm of x grows with time such that;

log a(t) = log(a₀) + x·log(1 + r)

Hence in the equation -3 ≡ a₀, (1 + r) ≡ 2.5 and y ≡ a(t). Plugging in the values in the above equation for the condition of an exponential growth, we have;

log y = log(-3) + x·log(2.5)

Therefore, since log(-3) is complex, the equation does not represent an exponential growth hence the equation  represents an exponential decay.

The rate of the exponential decay is given by the following equation;

\frac{dy}{dx} =\frac{d(-3(2.5)^x)}{dx} = -\frac{d(3\cdot e^{x\cdot ln(2.5)})}{dx} = -3 \times 2.5^x\times ln(2.5)

Hence the rate of exponential decay is -3×2.5ˣ × ㏑(2.5)

5 0
3 years ago
please help me with my question due tomorrow morning I will like and mark as brainliest for the first correct answer please​
galina1969 [7]

Answer:

p = (2k + 1)i + j

q = 25i + (k + 4)j

p . q = 11

Find the dot product of p and q

(2k + 1)(25) + (k + 4) = 11

50k + 25 + k + 4 = 11

51k = -18

k = - 18/51 = –6/17.✅

b) p.q = |p||q|cos∅

p= (2k + 1)i + j = [2(-6/17) + 1)i + j ]= 5/17i + j

|p| = √ (5/17)² + 1²

|p| = √314/ 17 ( The square root doesn't cover the 17) = 1.0424

q = 25i + (k + 4)j = 25i + ( -6/17 + 4)j

q = 25i + 62/17 j

|q| = √ 25² + (62/17)²

= 25.2646

Now applying them to the formula above

We already have p.q = 11 from the question.

11 = (1.0424)(25.2646)Cos∅

11 = 26.3358Cos∅

Cos∅ = 11/26.3358

Cos∅ = 0.4177

∅ = 65.31°.

This should be it.

Hope it helps

6 0
3 years ago
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