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chubhunter [2.5K]
3 years ago
12

IM GIVING BRAINLIEST!

Mathematics
1 answer:
Mariana [72]3 years ago
6 0
Sorry i don’t know the answer but i’m new to this app, and was wondering what brainliest is?:)
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Divide.<br><br> 26−6<br><br> Enter your answer as a mixed number, in simplified form,
matrenka [14]

Answer:

20

Step-by-step explanation:

20-6=20

5 0
2 years ago
The school auditorium has 22 rows with 28 seats and 19 seats are empty. How many seats are filled?
zhuklara [117]
597.
22•28=616-19=597
6 0
3 years ago
Read 2 more answers
(x+6) + (x+8) + 14 / 2
wlad13 [49]
Answer=2x+21 do you want the whole solution?
3 0
3 years ago
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How do I do question 9 &amp; 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
Integral of <br> e^x (sinx +cosx)
disa [49]
integral of e^x (sinx +cosx)= e^x sin x + c
8 0
3 years ago
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