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GrogVix [38]
2 years ago
15

The Histogram displays information about speeds of motorcycles in miles per hour. What is the number of motorcycles traveling le

ss than 40 miles per hour? A. 30 B. 40 C. 60 D. 20
Mathematics
2 answers:
STALIN [3.7K]2 years ago
8 0
The answer is of course c
NISA [10]2 years ago
3 0

Answer:

D. 50

Step-by-step explanation:

50-54 is 30

55-59 is 20

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Ea income of a person is Rs
matrenka [14]

Answer:

$13500. 00 is the 15% increase yearly + $90000.00 = $103,500.00 new yearly salary

3 0
2 years ago
How do I do question 9 & 11? Please help thank you!
Novay_Z [31]
<h2>9.</h2><h3>Given</h3>
  • sphere with radius 15 cm
<h3>Find</h3>
  • linear approximation to the volume when the radius increases 0.4 cm
<h3>Solution</h3>

The equation for volume of a sphere is

... V = (4/3)π·r³

Differentiating gives

... dV = 4π·r²·dr

Filling in the given numbers gives

... change in volume ≈ 4π·(15 cm)²·(0.4 cm)

... = 360π cm³ ≈ 1130.97 cm³ . . . . . . volume of layer 4mm thick

<h2>11.</h2><h3>Given</h3>
  • an x by x by 2x cuboid with surface area 129.6 cm²
  • rate of change of x is 0.01 cm/s
<h3>Find</h3>
  • rate of change of volume
<h3>Solution</h3>

The area is that of two cubes of dimension x joined together. The area of each such cube is 6x², but the two joined faces don't count in the external surface area. Thus the area of the cuboid is 10x².

The volume of the cuboid is that of two cubes joined, so is 2x³. Then the rate of change of volume is

... dV/dt = (d/dt)(2x³) = 6x²·dx/dt

We know x² = A/10, where A is the area of the cuboid, so the rate of change of volume is ...

... dV/dt = (6/10)A·dx/dt = 0.6·(129.6 cm²)(0.01 cm/s)

... dV/dt = 0.7776 cm³/s

5 0
3 years ago
Find the y intercept of a line with a slope of -4 and point (2,1)
Oxana [17]

Is this a rise over run question

6 0
3 years ago
Which equations represent two vertical asymptotes of the function y = 3 cot(4/3^x)?
Maurinko [17]

D ) x = 0 and x = 3 π / 4

.............................................

7 0
2 years ago
192 rounded to nearest tenth?
Andrews [41]

There is no TENTH in 192 so 192 rounded to the nearest TENTH is 192.


If you meant TEN then 192 rounded to the nearest TEN is 190.

Good Luck!

5 0
3 years ago
Read 2 more answers
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