Answer:
9
Step-by-step explanation:
Using the identity
(a + b + c)² = a² + b² + c² + 2(ab + bc + ca)
Subtract 2(ab + bc + ca) from both sides, then
a² + b² + c² = (a + b + c)² - 2(ab + bc + ca) = 7² - 2(20) = 49 - 40 = 9
Answer:
Mr Russo exchanged 200 euros for 270 dollars.how man dollars would he get for 300 euros 1 See answer lansdownem is waiting for your help. Add your answer and earn points. ... 200 * x = 270 * 300. divide each side by 200. x = 270 * 300/200. x =405 dollars. Can you answer this one a company manufactures two products. Market research and available ...
Step-by-step explanation:
Answer:
Use points (4,1) and (3,-1)
Step-by-step explanation:
Let's say the other coordinates are (x,y).
Then, we know (1-y)/(4-x)=2. So if y is -1, and x is 3, then we get:
[1-(-1)]/(4-3)=2/1=2
So draw the two points, (4,1) and (3,-1) on a coordinate plane, and use a ruler to make a line that goes through both the points.
Answer:
8/15 x 5/8 = 1/3
2/9 x 3/4 = 1/2
Step-by-step explanation:
multiply the numerators and denominators together.
8/15 x 5/8 = (8 x 5)/ (15 x 8)
40/120
Simplify by dividing by 40. (GCF)
1/3
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multiply the numerators and denominators together.
2/9 x 3/4 = (2 x 3)/ (9 x 4)
6/36
Simplify by dividing by 6. (GCF)
1/2
15 is just 10% of a number. 10% is 1/10 of a hundred percent, so to find the 100%, multiply 15 by 10 and get: 150
