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nexus9112 [7]
3 years ago
10

4 * (3.4+2)-(56 divided by 7)= 13.6, please give an explanation to this problem!!

Mathematics
1 answer:
Vika [28.1K]3 years ago
7 0

Answer:

=13.6

Step-by-step explanation:

\mathrm{Remove\:parentheses}:\quad \left(a\right)=a

=4\left(3.4+2\right)-\frac{56}{7}

=21.6-8

\mathrm{Subtract\:the\:numbers:}\:21.6-8=13.6

=13.6

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4/25

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28 is what percent of 50?
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go to 100

56 is 56 percent of 100

28 is 56 percent of 50

Step-by-step explanation:

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Find the arc length, x, when
Arte-miy333 [17]

The arc length of the circle is 5π/9 units

<h3>How to determine the arc length?</h3>

From the question, we have the following parameters

Angle, ∅ = 5π/9

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2 years ago
Raphael graphed the functions g(x)=x+2 and f(x)=x−1. How many units below the y-intercept of g(x) is the y-intercept of f(x)? A
jasenka [17]

Answer:

3 units below the y-intercept of g(x) is the y-intercept of f(x)

Step-by-step explanation:

g(x)=x+2 and f(x)=x-1

In f(x)= mx+b the y intercept is b

In g(x)=x+2, the y intercept value is 2

In f(x)=x-1, the y intercept value is -1

the difference in y intercept is +2-(-1)=+3

3 units below the y-intercept of g(x) is the y-intercept of f(x)

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Consumers are spending more on music from digital sources than they do on CDs. Purchases of streamed music from services such as
hodyreva [135]

Answer:

(a) (i) 3.7 billion

(ii) $ 4.6 billion

(b) $ 0.3 billion/year

Step-by-step explanation:

Given equation that shows the amount( in billions of dollar ) spent by consumers on streamed music after t years since 2012,

f(t) = 3.7 + 0.84 ln(t + 1) ,

(a)

(i) for 2012, t = 0,

So, the amount spent by consumers on streamed music in 2012,

f(0) = 3.7 + 0.84 ln (1)

= 3.7 + 0.84(0)

= $ 3.7 billion

(ii) for 2014, t = 2 years,

So, the amount spent by consumers on streamed music in 2014,

f(0) = 3.7 + 0.84 ln (1+2)

= 3.7 + 0.84 ln(3)

= 3.7 + 0.9228

= 4.6228 billion

≈ $ 4.6 billion

(b) ∵ f(t) = 3.7 + 0.84 ln(t + 1),

Differentiating with respect to t,

f'(t) = 0.84 \frac{1}{t+1}

For t = 2 years,

f'(2) = 0.84 \frac{1}{2+1}=\frac{0.84}{3}=0.28\approx 0.3

Hence, the amount spent by consumers on streamed music is growing with the rate of $ 0.3 billion/year in 2014

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3 years ago
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