All categories

3 years ago

This needs to be dont by tomorrow HELPPPPP

Mathematics

1 answer:

Likurg_2 [28]3 years ago

6 0

Answer:

Step-by-step explanation:

1. 2a + 3a + 3 = 8

5a + 3 = 8

5a = 5

a = 1

2. 3a - 2a - 4 = 0

a - 4 = 0

a = 4

3. 4 + 3a + 6 = 16

3a + 10 = 16

3a = 6

a = 2

4. 12a - 6a + 6 = 24

6a + 6 = 24

6a = 18

a = 3

You might be interested in

A horse's resting heart rate is

DIA [1.3K]

<span>The pulse rate of an adult horse at rest averages 30-40 beats per minute.</span>

4 0

4 years ago

Read 2 more answers

What equation matches this situation.mai biked x miles han biked 2/3 more than that

Olin [163]

Answer:

i need more information like how much mai biked

Step-by-step explanation:

3 0

3 years ago

A kite with a 100 foot-long string is caught in a tree. When the full length of the string is stretched in a straight line to th

spayn [35]

Hyp=100,adj side=30

angle= $cos^{-1}(30/100)$

6 0

4 years ago

Read 2 more answers

Anyone good with math??

-Dominant- [34]

Yup! We're all pretty good here.

7 0

4 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