3 years ago

Simplify the expression 3(m-4)+8m

Mathematics

1 answer:

ololo11 [35]3 years ago

8 0

Answer:

11m-12

Step-by-step explanation:

3×m=3m 3×-4=-12

8m+3m=11m

11m-12

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Please help!! Please give step by step so i can understand

miss Akunina [59]

Answer:

p = - 14

Step-by-step explanation:

Using the rules of exponents

$a^{m}$ ÷ $a^{n}$ = $a^{(m-n)}$

$(a^{m}) ^{n}$ = $a^{mn}$

Note 81 = 9² and 729 = 9³

Given

$(81)^{-4}$ ÷ $(729)^{2-p}$

= $(9^{2}) ^{-4}$ ÷ $(9^{3}) ^{2-p}$

= $9^{-8}$ ÷ $9^{6-3p}$

= $9^{-8-(6-3p)}$

= $9^{-8-6+3p}$

= $9^{3p-14}$

Thus

$9^{3p-14}$ = $9^{4p}$

Since bases on both sides are equal then equate the exponents

4p = 3p - 14 ( subtract 3p from both sides )

p = - 14

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3 years ago

Solve for w 6w + 4w - 9 + 6 = 9w - 7+ 6

Dmitry_Shevchenko [17]

Answer:

w = 2

Step-by-step explanation:

6w + 4w - 9 + 6 = 9w - 7+ 6

6w + 4w - 9w = - 7 + 6 + 9 - 6

w = 2

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3 years ago

Solve the division problem -1 3/5 divided by -2/3 please help I already have 3 wrong and my brain feels pooped

wlad13 [49]

The answer is 9/10

Hope this helps!

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3 years ago

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A pair of shoes usually sells for $61. If the shoes are 40% off, and sales tax is 5%, what is the total price of the shoes, incl

lyudmila [28]

Since sale is 40% so the price is 60%

61*(60%) = 36.6

the tax is 5%

so the price after tax is: 36.6 * (1 +5%) = $38.43

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a mother is five times old as her daughter. in 6 years, the mother will be three times as old as her daughter. how old is each n

Westkost [7]

Answer:

30,6

Step-by-step explanation:

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2 years ago