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aev [14]
4 years ago
12

I need some help with this. If you could help me, that would be great.

Mathematics
1 answer:
Vesnalui [34]4 years ago
8 0

Answer:

 .31 g / mL

Step-by-step explanation:

Density = mass / volume

Sample 3

mass = 7 1/4 = 7.25

Volume 23.1

Density = 7.25/ 23.1 = .313852814

To the nearest hundredth

  .31 g / mL

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Factor x^2-6x+9<br><br> A.) (x-3)<br> B.) (x-3)(x+3)<br> C.) (x-3)^2<br> D.) (x+3)^2
ra1l [238]

There must be two binomial factors.  Thus, we eliminate Answer A, which contains only one such factor.

(x-3)(x+3) has the form (a-b)(a+b), which equals a^2 - 3^2.  This is a special product.  Eliminate Answer B, because a^2 - 3^2 does not equal x^2 - 6x + 9.

The middle term of x^2 - 6x + 9 is negative.  This quadratic has the form x^2 -  y^2, which is special product and whose factors are (x-y) and (x-y).

Thus,  x^2-6x+9 = (x-3)(x-3) (Answer C)

8 0
3 years ago
A baby gains
s2008m [1.1K]
Answer should be 0.25w + 6.5>10
7 0
3 years ago
Elimination <br><br> 3x + 4y = 2<br> 4x - 4y = 12
pishuonlain [190]

To do this, add the equations together like this,

3x + 4y = 2  plus

4x - 4y = 12

-x = 14

Multiply the negative sign to both sides because the x cannot be a negative.

x = -14

Now plug in -14 for a x value in one equation, like this to get the y value:

3(-14) + 4y = 2

-42 + 4y = 2

Add 42

4y = 44

y = 11

Your x and y values are:

x = -14

y = 11  

6 0
3 years ago
Please help ASAP!!! Will give brainlsit :)
yarga [219]
It's the third one.
3 0
3 years ago
Read 2 more answers
Explain how you could mentally find 8 x 45 by using the distributive property
dangina [55]
First, break up 45 into 40 and 5 then multipy 8(40) which equals 320 and multipy 8(5) which equals 40. Thrn add 320+40 to get the product 360.
Hope this helped

8x45
8(40)+8(5)
320+40
360
6 0
4 years ago
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