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Stells [14]
3 years ago
11

What is the volume of a cube with a side of length 14 units? A. 2744 cubic units B. 196 cubic units C. 84 cubic units D. 42 cubi

c units
Mathematics
1 answer:
Novay_Z [31]3 years ago
6 0
A. 2744 cubic units. Because you use the formula V=S^3
V=14^3 = 14x14x14= 2744
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George buys some first class and second class stamps to put on some letters. Each first class stamp costs 67p, and each second c
Dafna1 [17]

Answer:

£191.36

Step-by-step explanation:

Sum the parts of the ratio, 1 + 4 = 5 parts

Divide 320 by 5 to find the value of one part of the ratio.

320 ÷ 5 = 64 ← value of 1 part of the ratio , thus

4 parts = 4 × 64 = 256

Thus he bought 64 first class and 256 second class.

Cost = (64 × £0.67) + (256 × £0.58)

        = £42.88 + 148.48

        = £191.36

3 0
3 years ago
2 points) Suppose w=xy+yzw=xy+yz, where x=et, y=2+sin(t)x=et, y=2+sin⁡(t), and z=2+cos(3t)z=2+cos⁡(3t). A ) Use the chain rule t
Olenka [21]

Answer:

\frac{\partial w}{\partial t}  = y(e^t) +(x+z)*(cos(t))  - 3y*sin(3t)

Step-by-step explanation:

First, note that

\frac{\partial x}{\partial t}  = e^{t} \\\frac{\partial y}{\partial t}  = cos(t)\\

And using the chain rule in one variable

\frac{\partial z}{\partial t}  = -3sin(3t)

Now remember that the chain rule in several variables sates that

\frac{\partial w}{\partial t}  = \frac{\partial w}{\partial x} * \frac{\partial x}{\partial t} + \frac{\partial w}{\partial y} * \frac{\partial y}{\partial t} + \frac{\partial w}{\partial z} * \frac{\partial z}{\partial t}

Therefore the chain rule in several variables would look like this.

\frac{\partial w}{\partial t}  = y(e^t) +(x+z)*(cos(t))  - 3y*sin(3t)

6 0
4 years ago
Read 2 more answers
5 Keisha needs postage stamps to mail
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Answer:

$4.05

Step-by-step explanation:

45 x 9 = 4.05

3 0
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The amount of money left in Alma’s bank account is expressed by the linear equation y = -27x + 577, where x represents the numbe
marissa [1.9K]
145=-27x + 577
27x=432
x=16 weeks
6 0
3 years ago
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Solve the inequality.<br> 3+ 4x &gt; 27
gogolik [260]
X = 7. 7 x 4 = 28 and 28 + 3 = 31.

31>27
5 0
3 years ago
Read 2 more answers
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