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2 years ago

13

Can I get help with number 15

1 answer:

elixir [45]2 years ago

6 0

Answer: 125

Step-by-step explanation:

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Simplify: (2^2 + 3^4)−^2

Lisa [10]

$\bf ~\hspace{7em}\textit{negative exponents} \\\\ a^{-n} \implies \cfrac{1}{a^n} ~\hspace{4.5em} a^n\implies \cfrac{1}{a^{-n}} ~\hspace{4.5em} \cfrac{a^n}{a^m}\implies a^na^{-m}\implies a^{n-m} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ (2^2+3^4)^{-2}\implies (4+81)^{-2}\implies 85^{-2}\implies \cfrac{1}{85^2}\implies \cfrac{1}{7225}$

5 0

3 years ago

Read 2 more answers

Carmelo forma parte De una inmensa fila de niños el primer niño grita cinco el segundo grita 18 el tercero 31 el cuarto 44 el qu

allsm [11]

Answer:

70

Step-by-step explanation:

Porque si haces 31-18=13

57-44=13 entonces están subiendo en 1e y luego haces 57+13=70

3 0

3 years ago

Lillian works 7hours each day for 5 days a week she earn £420 each week how much does she earn per hour

frosja888 [35]

Answer:

£12 per hour

Step-by-step explanation:

7 × 5 = 35 hours

35 h : 420

1 h : x

x = 420×1 / 35

= £12 per hour

8 0

3 years ago

Solve for x in the equation 3 x squared minus 18 x + 5 = 47.

ryzh [129]

Answer:

x= 3 + $\sqrt{23}$ , 3 - $\sqrt{23}$

Step-by-step explanation:

You use the quadratic formula to get x= $\frac{18+6\sqrt{23} }{6} ,\frac{18-6\sqrt{23} }{6}$

Then you simplify and get the answers x= 3 + $\sqrt{23}$ , 3 - $\sqrt{23}$

6 0

3 years ago

Read 2 more answers

Christina goes to market with $50. She buys one papaya for $20 and spends the rest of the money on bananas. Each banana costs $6

maria [59]

$x-\ number\ of\ bananas\\\\
20+6x\leq50\ \ \ \ | subtract\ 20\\\\
6x\leq30\ \ \ | divide\ by\ 6\\\\
x\leq5\\\\
x\in(-\infty,5)$

7 0

2 years ago