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madam [21]
2 years ago
15

Is the expression 4(3 + 5) – 10 = 4 x 3 + 5 – 10 true or false? Explain

Mathematics
1 answer:
klemol [59]2 years ago
6 0
False.

For the first part, 4(3 + 5) needs to be added first so its 4 * 8.  This is 32 - 10.

The second part will have 4 * 3 which is 12 + 5 which is 17.  Finally subtract 10 and its 7.

And 22 is not equal to 7
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What is the length of BC? If your answer is not an integer, leave it in simplest radical form?
nexus9112 [7]
ANSWER

|BC|=12\sqrt{2}\: ft

EXPLANATION

The given right triangle is an isosceles triangle because

m \: < \: B = 45 \degree = m \: < \: C
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|AB|=12ft=|AC|

From the Pythagoras Theorem,

|BC|^2=|AB|^2+|AC|^2

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7 0
3 years ago
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The diameter of a spherical balloon that is being filled with air is increasing at the rate of 3 inches more than the time, t. W
Harrizon [31]

Answer:

V=36 \pi cubic inches

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Diameter is increasing at 3 inches more than time, When t = 3

Diameter (d) = 3+3 = 6

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Now, the volume of a sphere is given by the formula:

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V=\frac{4}{3}\pi r^3\\V=\frac{4}{3}\pi (3)^3\\V=36 \pi

The volume would be 36π

5 0
2 years ago
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