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Tasya [4]
3 years ago
9

What is 36÷-12+5 (20-5)

Mathematics
2 answers:
Furkat [3]3 years ago
7 0
<span>36÷-12+5 (20-5)= </span>72 is the answer to your problem
Bas_tet [7]3 years ago
4 0
36 ÷ (-12) +5(20-5)
=36÷(-12) +5(15)
=36÷(-12)+75
=-3+75
=72
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3 5/6 x 8 as a fraction
kirza4 [7]

Answer: 92/3 OR 30 2/3 ??

Step-by-step explanation:

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What type of equipment did police use in 1918
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Step-by-step explanation:

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3 years ago
A quarter is 1/4 of a dollar. Victor has 32 quarters. how much money does he have
Vikentia [17]

Answer:

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Step-by-step explanation:

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8 0
2 years ago
mark wants to order a pizza. which is the better deal 10.00 with a diameter of 12 or 20.00 with a diameter of 18
satela [25.4K]
I'm gonna calculate by the area of pizza to see how much food you get for 10 and 20 dollars

A...area
r...radius
d...diameter

d1=12 r1=6
d2=18 r2=9

A1=r1^2×3.14
A1=6^2×3.14
A1=36×3.14
A1=113.04

A2=r2^2×3.13
A2=9^2×3.14
A2=81×3.14
A2=254.34

if you bought 2, 12 diameter pizzas for 20 dollars you would get 226.08 area od food,still less if you bought 1, 18 diameter pizza for 20 dollars. because 223.08 < 254.34
7 0
2 years ago
Find S12 for geometric series: (-7.5) + 15 + (-30) + ...
kolezko [41]

Answer:

S12 for geometric series: (-7.5) + 15 + (-30) + ... would be: 10237.5

Step-by-step explanation:

Given the sequence to find the sum up-to 12 terms

(-7.5) + 15 + (-30) + ...

As we know that

A geometric sequence has a constant ratio 'r' and is defined by

a_n=a_1\cdot r^{n-1}

\mathrm{Compute\:the\:ratios\:of\:all\:the\:adjacent\:terms}:\quad \:r=\frac{a_{n+1}}{a_n}

\frac{15}{\left(-7.5\right)}=-2,\:\quad \frac{\left(-30\right)}{15}=-2

\mathrm{The\:ratio\:of\:all\:the\:adjacent\:terms\:is\:the\:same\:and\:equal\:to}

r=-2

\mathrm{The\:first\:element\:of\:the\:sequence\:is}

a_1=\left(-7.5\right)

a_n=a_1\cdot r^{n-1}

\mathrm{Therefore,\:the\:}n\mathrm{th\:term\:is\:computed\:by}\:

a_n=\left(-7.5\right)\left(-2\right)^{n-1}

a_n=-\left(-2\right)^{n-1}\cdot \:7.5

\mathrm{Geometric\:sequence\:sum\:formula:}

a_1\frac{1-r^n}{1-r}

\mathrm{Plug\:in\:the\:values:}

n=12,\:\spacea_1=\left(-7.5\right),\:\spacer=-2

  =\left(-7.5\right)\frac{1-\left(-2\right)^{12}}{1-\left(-2\right)}

  =-7.5\cdot \frac{1-\left(-2\right)^{12}}{1+2}

\mathrm{Multiply\:fractions}:\quad \:a\cdot \frac{b}{c}=\frac{a\:\cdot \:b}{c}

  =-\frac{-30712.5}{1+2}          ∵  \left(1-\left(-2\right)^{12}\right)\cdot \:7.5=-30712.5

 =-\frac{-30712.5}{3}

 =\frac{30712.5}{3}

 =10237.5

Thus, S12 for geometric series: (-7.5) + 15 + (-30) + ... would be: 10237.5        

5 0
3 years ago
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