3 and -3 are said to be the square roots of 9. A square root is written with a radical symbol √ and the number or expression inside the radical symbol, below denoted a, is called the radicand. ... Negative numbers don't have real square roots since a square is either positive or 0.
The cost of scarf is $11 and the cost of hat is $6.
<u>Step-by-step explanation:</u>
<u>Let us assume :</u>
- The cost of hat be 'h'.
- The cost of scarf be 's'.
<u>Given that,
</u>
The cost of 6 hats and 1 scarf is $47
⇒ 6h + s = 47 ------(1)
The cost of 3 hats and 2 scarves is $40
⇒ 3h + 2s = 40 -------(2)
<u>Solving the equations to find x and y values :
</u>
Multiply eq(2) by 2 and subtract eq(2) from eq(1),
6h + s = 47
-<u>(6h + 4s = 80)
</u>
<u>
</u> <u> -3s = - 33</u>
-3s = - 33
s =33/3
s = 11
The cost of scarf is $11.
Substitute s=11 in eq(1),
6h + 11 = 47
6h = 47 - 11
6h = 36
h = 36/6
h = 6
The cost of hat is $6.
Fill the 200mL beaker all of the way. Using the water in that beaker, fill and pour out the 30mL twice and the 40mL three times. You should be left with 20mL in the 200mL beaker.
The point ends up being ( 1, -1) and if you're graphing it you would put a dot on 1 and -1 on your graph and put a line connecting them (hope this helps)
