3 years ago

After a 15% off sale,some jeans were $11.50.How much were the jeans before the sale?

Mathematics

1 answer:

Nookie1986 [14]3 years ago

3 0

$13.53 is the answer to you problem

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this is a very dumb question but what is -1^2? my calculator says its -1 but isnt -1*-1 = 1???? im very confused plzz help

EastWind [94]

Answer:

yes; -1² is 1.

if you put -1 in parentheses, like this (-1)², then it comes out as 1

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In the school store, pencils cost 15 cents each and erasers cost 10 cents each. There is no tax. Gabby wants to spend exactly $2

kakasveta [241]

she bought 10 pencils and 5 erasers

Let x represent the number of pencils and y represent the number of erasers.

Gabby wants to spend exactly $2.00 on pencils and erasers, hence:

0.15x - 0.1y = 2 (1)

Therefore x = 10 and y = 5

Therefore she bought 10 pencils and 5 erasers.

Find out more at: brainly.com/question/25035724

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What happens to the volume of a cube if the length of an edge is doubled?

Sveta_85 [38]

It is multiplied by 8

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4 years ago

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Fill in the blank with a constant, so that the resulting quadratic expression is the square of a binomial. $\[x^2 + 22x + \under

saw5 [17]

Answer:

$\[x^2 + 22x + 121\]$

Step-by-step explanation:

Given

$\[x^2 + 22x + \underline{~~~~}.\]$

Required

Fill in the gap

Represent the blank with k

$\[x^2 + 22x + k\]$

Solving for k...

To do this, we start by getting the coefficient of x

Coefficient of x = 22

Divide the coefficient by 2

$Result = 22/2$

$Result = 11$

Take the square of this result, to give k

$k= 11^2$

$k= 121$

Substitute 121 for k

$\[x^2 + 22x + 121\]$

The expression can be factorized as follows;

$x^2 + 11x + 11x + 121$

$x(x + 11)+11(x+11)$

$(x+11)(x+11)$

$(x+11)^2$

Hence, the quadratic expression is $\[x^2 + 22x + 121\]$

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How many solutions do the following equations have ? Please helppppp

Svetllana [295]

Answer:

a) no solution

b) no Solution

c) -8

d) -1

sorry if this is wrong this is my first time doing this stuff and im not that great at math, but I helped the best i could

Step-by-step explanation:

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3 years ago