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dexar [7]
3 years ago
7

What does -8(4+9x)=7(-2-11x) equal

Mathematics
1 answer:
hjlf3 years ago
3 0

Answer:

x=18/5

Step-by-step explanation:

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Which of the following functions gives the length of the base edge, a(v), of a right square pyramid that is 8 inches tall as a f
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Answer:

\large\boxed{a(V)=\sqrt{\dfrac{3V}{8}}}

Step-by-step explanation:

The formula of a volume of a square pyramid:

V=\dfrac{1}{3}a^2h

a - base edge

h - height of a pyramid

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Substitute and solve for a:

\dfrac{1}{3}a^2(8)=V\\\\\dfrac{8}{3}a^2=V\qquad\text{multiply both sides by}\ \dfrac{3}{8}\\\\\dfrac{3\!\!\!\!\diagup^1}{8\!\!\!\!\diagup_1}\cdot\dfrac{8\!\!\!\!\diagup^1}{3\!\!\!\!\diagup_1}a^2=\dfrac{3}{8}V\\\\a^2=\dfrac{3V}{8}\Rightarrow a=\sqrt{\dfrac{3V}{8}}

3 0
3 years ago
Evaluate 7C3. 35 210 21 105
nydimaria [60]

\bf _nC_r=\cfrac{n!}{r!(n-r)!}\qquad \qquad \qquad \qquad \qquad _7C_3=\cfrac{7!}{3!(7-3)!} \\\\\\ \textit{use the }[!]\textit{ factorial button or the }[_nC_r]\textit{ button in your calculator}

8 0
3 years ago
12 less than k is -8 find k
galben [10]

Answer:

4

Step-by-step explanation:

-8+12=4

4-12=-8

7 0
2 years ago
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