X^2 - 10x + 36 = 0;
We use the quadratic formula: x = ( - b + or - i
)/ (2a);
We have a = 1; b = -10; c = 36;
Then, x = ( 10 + or -i
)/2 = 5 + or -
)/2 ;
I just took the test. The correct answer is:
8-3(x+6)
explanation:
it just makes sense lol but also bc “8 decreased by three” means “8 minus 3”
then “times” means “multiply”
then “a sum” means “addition”
then “a number” since we don’t know what a number is then we use “x”
“and” means “addition”
“a number and six” means “x+6”
Answer: The Millers need 15 gallons of water for 6 minutes.
Lets start by finding how much water is needed for 1 min shower.
<span>
25 gallons of water is used for 10 min shower:
</span>10 mins = 25 gallons <span>
To find 1 min shower, we will divide the 25 gallons of water by 10.
</span><span>
10 mins = 25 gallons </span>← Divide by 10 on both sides<span>
÷ 10 ÷ 10
1 min = 2.5 gallons
Now that we know the Millers need 2.5 gallons for every 1 minute of shower, we can find 6 minutes of shower by multiplying by 6.
1 min = 2.5 gallons</span> ← Multiply 6 on both sides<span>
x6 x6
6 min = 15 gallons
-----------------------------------------------</span>---------------------------------------<span>
Answer: The Millers need 15 gallons of water for 6 minutes.
</span>--------------------------------------------------------------------------------------<span>
</span>
Check the picture below.
so.. notice, the box for the gift is really just a rectangular prism, which is really just 6 rectangles stacked up to each other at the edges.
the front and back are two 5x3 rectangles
the left and right are just two 3x7 rectangles
and the top and bottom are just two 5x7 rectangles
so, just get the area of each, sum them up, and that's the area of the rectangular prism and thus of the box, and that's how many in² she will need.
