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babunello [35]
3 years ago
7

PLZ HELP ME 100 POINTS

Mathematics
2 answers:
frozen [14]3 years ago
8 0

Answer:

7,840 ft^{3}

Step-by-step explanation:

V_{1} = B_{1} * h = 14*10 * 40 = 5,600 \\\\V_{2} = B_{2} * h = \frac{1}{2} * 8*14 * 40 = 2,240 \\\\V = V_{1} + V_{2} = 5,600 + 2,240 = 7,840

Anuta_ua [19.1K]3 years ago
6 0

Answer:

7,840 ft^{3}

Step-by-step explanation:

V_{1} = B_{1} * h = 14*10 * 40 = 5,600 \\\\V_{2} = B_{2} * h = \frac{1}{2} * 8*14 * 40 = 2,240 \\\\V = V_{1} + V_{2} = 5,600 + 2,240 = 7,840

Hope this helps!

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A complex number z=a+bi had an absolute value of 3.28. What could the values of a and b be ? A.a=1.5,b=1.7 C.a=1.7,b=2.8
Levart [38]
The given complex number is ⇒ z = a + b i
The absolute value of z = √( a² + b² ) = 3.28
So, we will check which of the options will give 3.28

<span>( A) IF ⇒⇒ a=1.5 and b=1.7
</span>
<span>∴ √( a² + b² ) = √( 1.5² + 1.7²) = √5.14 ≈ 2.27
</span>
===================================

<span>(B) IF ⇒⇒ a=1.5 and b=3.3
</span>
<span>∴ √( a² + b² ) = √(1.5² + 3.3²) = √13.14 ≈ 3.62
</span>
====================================

<span>(C) IF ⇒⇒ a=1.7 and b=2.8
</span>
<span>∴ √( a² + b² ) = √(1.7² + 2.8²) = √10.73 ≈ 3.28
</span>
====================================

<span>(D) IF ⇒⇒ a=2.8 and b=3.3
</span>
∴ √( a² + b² ) = √(2.8² + 3.3²) = √18.73 ≈ 4.33
=====================================
So, the correct answer is option (C) <span>a=1.7,b=2.8</span>
4 0
3 years ago
Why is the answer to a subtraction problem called the difference...
lana [24]
Maybe because you're finding the "difference" between the two numbers. We could also question why the answer to an addition problem is called sum.
Well, 'sum'body said that's what they should be called a long time ago, that's why we're using that term to call them now. 
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Free_Kalibri [48]

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Answer:

9

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6 0
3 years ago
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Lelechka [254]

For this case we must solve the following proportion:

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