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DiKsa [7]
3 years ago
5

Constant of proportionality

Mathematics
2 answers:
Furkat [3]3 years ago
7 0

Answer:

2.5

Step-by-step explanation:

given that y is proportional to x then the equation relating them is

y = kx ← k is the constant of proportionality

y = 2.5x is in this form with k = 2.5


Ugo [173]3 years ago
5 0
I think the answer is 2.5
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Solve 7e^(2x)-5>58. Round to the nearest hundredth.
7nadin3 [17]

Answer:

x\gtrapprox1.1

Step-by-step explanation:

7e^{2x}-5>58

7e^{2x}>63

e^{2x}>9

2x>ln(9)

x>\frac{ln(9)}{2}

x\gtrapprox1.1

5 0
3 years ago
The area of the sector of a circle with a radius of 8 centimeters is 125.6 square centimeters. The estimated value of pi is 3.14
tangare [24]
\bf \textit{area of a sector of a circle}\\\\
A=\cfrac{\theta\pi r^2}{360}\qquad 
\begin{cases}
\theta=\textit{angle in degrees}\\
r=radius\\
----------\\
r=8\\
A=125.6
\end{cases}
\\\\\\
360A=\theta\pi r^2\implies \cfrac{360A}{\pi r^2}=\theta\implies \cfrac{360\cdot 125.6}{\pi 8^2}=\theta
4 0
3 years ago
A construction crew has just finished building a road. The crew worked for 8 days. If they built 2 1/6 kilometers of road each d
Luba_88 [7]

Answer:

13km

Step-by-step explanation:

Given data

Time= 8 days

Speed= 2 1/6 kilometers per day = 13/6 kilometers per day

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We know that

Speed= distance/time

therefore, Distance= speed*time

substitute

Distance= 13/6*8

Distance= 104/8

Distance= 13 km

Hence the crew did 13km

4 0
3 years ago
Which value would make the statement true? 2/? is greater than 4/12 ? A.4 B.6 C.12 D.24
Liula [17]

Answer:

A.4

Step-by-step explanation:

Because 4/12 is simplified to 1/3 and 2/4 would be simplified to 1/2. 1/2 > 1/4

6 0
3 years ago
Jill earns a yearly salary of $40,000 plus
Rudik [331]

Answer:

Jill earned $22,500 more total income for the year.

Step-by-step explanation:

4 0
3 years ago
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