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Olin [163]
3 years ago
15

Is this answer is right?

Mathematics
1 answer:
Klio2033 [76]3 years ago
4 0

\bf \cfrac{7y-x}{z}~~ \begin{cases} x=9\\ y=5\\ z=4 \end{cases}\implies \cfrac{7(5)-9}{4}\implies \cfrac{35-9}{4}\implies \cfrac{26}{4}\implies \cfrac{13}{2}\implies 6\frac{1}{2}

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What is 5√28 + √63 in simplest radical form? <br> PLEASE HELP ME!
Harrizon [31]

\bf 5\sqrt{28}+\sqrt{63}~~ \begin{cases} 28=2\cdot 2\cdot 7\\ \qquad 2^2\cdot 7\\ 63=3\cdot 3\cdot 7\\ \qquad 3^2\cdot 7 \end{cases}\implies 5\sqrt{2^2\cdot 7}+\sqrt{3^2\cdot 7} \\\\\\ 10\sqrt{7}+3\sqrt{7}\implies \stackrel{\textit{adding like-terms}}{13\sqrt{7}}

8 0
3 years ago
3. If y varies directly as x, and y is 12 when x is 16; find y when x is 36.
Serggg [28]

Answer:

C- 27

Step-by-step explanation:

Y varies directly as X

Y=kx

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3 0
3 years ago
What's 20 + (-6 x 4) - 2 ?​
Zepler [3.9K]

Answer:

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Then add 20 and -24 which is -4

Then subtract -4 and -2

Which is -6.

3 0
3 years ago
Read 2 more answers
Hi, I'm actually a good student i do my own work but this stuff makes no sense to me, my teacher isn't the best so if you could
Grace [21]
1. an = 15 (1/3)^(n-1)
because it starts from 1,2,3,4........ for n.
2. a₁= 10(-8)^(1-1)=10
an= 10(-8)^(n-1)
3. an=2(1/3)^(n-1)
4. a₁= 1/2 (4/3)^0=1/2
an= 1/2 (4/3)^(n-1)
Hopes this loves.

3 0
3 years ago
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solniwko [45]
<span>33689 - try a calculator next time buddy.</span>
6 0
3 years ago
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