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Mathematics

1 answer:

schepotkina [342]3 years ago

5 0

Answer:

It is A 7

Step-by-step explanation:

2(7)+4= 18

14 + 4=18

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Train A traveled 173 miles in five hours. For Train B, y = 31.35x represents its rate of speed over the same five hours. Which t

kap26 [50]

D) Train A by a factor of 1.1
Train A: 17/35 = 34.6

Train B: Rate is the slope of the equation, 31.35

Thus,34.6/31.35 = 1.1036

4 0

4 years ago

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2x=8 so find the value of x

melisa1 [442]

Answer:

x = 4

Step-by-step explanation:

2x/2 = 8/2

x =4

6 0

3 years ago

Suppose y = 48 + 3(2n - 1) is an explicit representation of an arithmetic sequence for integer values n ≥ 1. Find the xth partia

omeli [17]

$a_n=48+3(2n-1)$

The formula of the sum of the arithmetic sequence:
$S_n=\dfrac{a_1+a__n}{2}\cdot n$
calculate:
$a_1=48+3(2\cdot1-1)=48+3=51$
substitute
$S_n=\dfrac{51+48+3(2n-1)}{2}\cdot n=\dfrac{99+6n-3}{2}\cdot n=\dfrac{96+6n}{2}\cdot n=3n^2+48n$
Your answer is:
$\boxed{f(x)=3x^2+48x}$

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3 years ago

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Given the arc length of a circle is 127π centimeters and the subtended angle is 60˚. Find the Circumference of the circle.

Mumz [18]

The circumference of the circle is 762π cm.

<h3>What is length of arc of a circle?</h3>

The length of arc a circle can is determined with the radius and central angle of the arc.

The radius of the circle is calculated as follows;

$L = \pi r \times \frac{ \theta }{180} \\\\
\pi r \theta = 180 L\\\\
\pi r = \frac{180 L}{\theta}$