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2 years ago

Readin

Mathematics

1 answer:

docker41 [41]2 years ago

3 0

Answer:

10 11 12 13 14 15 16 17 18 19

10 10 11 12 13 14 15 16 17 18 19

Step-by-step explanation:

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Erica earns $6 an hour helping her grandmother. Her goal is to earn $48 this weekend

denpristay [2]

Answer:

h = 48 ÷ 6

she has to work for 8 hours

Step-by-step explanation:

Given:

1hr = $6

$48 = ?

let no. of hours be "h"

equatuon: h = 48 ÷ 6

solution: h = 8

= 8 hours

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2 years ago

Solve the system x+5y=-15 -2x-10y=30

skelet666 [1.2K]

X= -2x -15y -45 maybe i’m kinda stupid

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2 years ago

Read 2 more answers

What is the awnser to the problem b-9.5<7

OlgaM077 [116]

Answer:

b < 16.5

Step-by-step explanation:

b - 9.5 + 9.5 < 7 + 9.5

b < 16.5

hope this helped :D

5 0

3 years ago

El abuelo del hijo de mi hermano es mi

hammer [34]

The grandfather would be your parents.Hope it helps :)

3 0

3 years ago

Expand the binomial<br> <img src="https://tex.z-dn.net/?f=%28x-%5Cfrac%7B2%7D%7B5%7D%29%5E%7B2%7D" id="TexFormula1" title="(x-\f

kkurt [141]

Answer:

$(x- \frac{2}{5})^{2} = x^2 -\frac{4}{5}x + \frac{4}{25}$

Step-by-step explanation:

You have two methods to expand this binomial.

Method 1

If you have the expression:

$(x- \frac{2}{5})^{2}$

You can write the expression it in the following way:

$(x-\frac{2}{5})^{2}=(x-\frac{2}{5})(x-\frac{2}{5})$

Then, apply the distributive property:

$(x-\frac{2}{5})(x-\frac{2}{5}) = x^2 -\frac{2}{5}x -\frac{2}{5}x+ (\frac{2}{5})\frac{2}{5}$

Simplify the expression:

$(x-\frac{2}{5})^2= x^2 -\frac{4}{5}x+ (\frac{4}{25})$

---------------------------------------------------------------------------------------

Method 2

For any expression of the form:

$(a-b)^2$

Its expanded form will be:

$(a-b)^2= a^2 -2ab + b^2$

$a = x$

$b =\frac{2}{5}$

$(x- \frac{2}{5})^{2} = x^2 - 2x\frac{2}{5} + (\frac{2}{5})^2$

$(x- \frac{2}{5})^{2} = x^2 -\frac{4}{5}x + \frac{4}{25}$

3 0

3 years ago