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4 years ago

The product of a number and negative two is the same as 5 less than the half the number. What equation does this represent?

Mathematics

1 answer:

cricket20 [7]4 years ago

7 0

Answer:

-2x=x/2-5

Step-by-step explanation:

let x represent the number

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What is the answer and how do you solve 21x^3/3x^−1

Sunny_sXe [5.5K]

Answer:

as written: 7x^2

perhaps intended: 7x^4

Step-by-step explanation:

As written, the Order of Operations specifies that the only denominator factor is 3, so the expression is interpreted as ...

$\dfrac{21x^3}{3}x^{-1}=\dfrac{21}{3}x^{3-1}=7x^2$

___

Sometimes grouping of denominator factors is intended, but parentheses are not written as they should be. If the intention is ...

21x^3/(3x^-1)

then the simplification is ...

$\dfrac{21x^3}{3x^{-1}}=\dfrac{21}{3}x^{3-(-1)}=7x^4$

_____

The applicable rules of exponents are ...

(a^b)(a^c) = a^(b+c)

a^b/a^c = a^(b-c)

6 0

3 years ago

Solve the following linear equation for k. 2 (k-5) + 3k = k + 6

kiruha [24]

Answer:

2(k-5)+3k=k+6

-3k. -3k

2(k-5)=-2k+6

/2. /2

k-5=-k+3

+k. +k

2k-5=3

+5. +5

2k=8

/2. /2

k=4

7 0

3 years ago

C. How many pieces of siding need to be purchased? Justify your reasoning.

Mademuasel [1]

Answer:14025

Step-by-step explanation:

Because 25x33x17=14025

4 0

3 years ago

Read 2 more answers

Find the quotient of 2.632 x 10^4 and 2 x 10^-7

givi [52]

$(2.632\cdot10^4):(2\cdot10^{-7})=(2.632:2)\cdot(10^4:10^{-7})\\\\=1.316\cdot10^{4-(-7)}=1.316\cdot10^{4+7}=\boxed{1.316\cdot10^{11}}$

6 0

3 years ago

What is the surface area of a pyramid?

devlian [24]

Well, to get the surface area, you do length x width x height. Multiply the side length of the base by the slant height and divide by two. Then, multiply by 4. This will give you the lateral surface area of the pyramid.

6 0

3 years ago