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padilas [110]
2 years ago
15

PLEASE NO LINKS AND NO NEGATIVITY

Mathematics
1 answer:
Umnica [9.8K]2 years ago
6 0

Answer:

Answer is 15-r .Hope it will help you

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2a) Solve using substitution.
Tcecarenko [31]
First things first, write out your equation without the substitution.

2x+ 2y= 10

Now, put in the substitution.

2x+ 2• 2= 10

Combine like terms.

2x+ 4= 10

Now that your equation it simplified, you need to reverse the problem and put everything on the other side.

2x+ 4= 10
- 4 - 4
2x = 6

2x=6
— —
2 2

X= 3

So the final answer is x=3

8 0
2 years ago
-5.5x+0.77=1.48 whats x
Nesterboy [21]

Answer:

X= -0.1290 (bar line on top of the 90)

Hope this helps!

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What is the square root of four
xz_007 [3.2K]

Answer:

It is +2 or since (+2)*(+2 ) gives. If you think that it would be (-2) also then you are wrong because root of a positive rational number is always positive number.

Step-by-step explanation:

Let the square root of four be ‘k’.

Then we have

(4)^1/2=k

(Squaring both sides)

4=(k)^2

=>(k)^2–4=0

=>(k)^2-(2)^2=0

=>[k+2][k-2]=0 {since (a)^2-(b)^2=(a+b)(a-b)}

if product of two numbers is 0 then either of one must be zero.

If k+2=0 then k=-2

If k-2=0 then k=2

From here we got two answers but -2 should be omitted because when we square an equation we add “root extra”which means that when we square an equation one root is added.

3 0
3 years ago
Debby, Ella and Unique invest $10,000 each into an oil company. Debby owns 2000 $1 common stocks, Ella owns 1000 of 5% $50 prefe
Mashutka [201]

Answer:

Ella has the greatest return in the current year.

Step-by-step explanation:

Debby would receive $0.80 for each of her 2000 common stock in the oil company,hence Debby's return on investment in the current year is $1600($0.80*2000)

Besides,Ella's return on the stock investment in the current year is computed thus:

Ella's return= 5%*1000*$50=$2,500

In addition,Unique's dollar return on the investment is computed as follows:

Unique's return on  investment=4%*2000*$20=$1,600

From the above computations,Ella seems to have the highest return in the current year of $2,500 whereas the two others managed to have $1600 return each

5 0
3 years ago
Choose a method for 16x60 using strategies!
OverLord2011 [107]

 aline it like that then do 6×0 then put that answer ,you know what I'm jut going to show you.                                       60×

                                                            16

                                                            360                   

                                                             600   

                                                              ↑then add 360 and 600 and that's all. Sorry that the numbers look all funny.



6 0
3 years ago
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