4/7 of a chance. There are a total of 14 cars. 6 are yellow. 8 are not. 8/14 of the cards are not yellow. 8/14 simplifyed= 4/7.
Answer:
1 and 3/7 i think
Step-by-step explanation:
Any time you have a fraction within an equation, multiply the entire equation by the denominator to clear the fraction. Since the lead term is negative, we can multiply that away as well
(-14) (0=-1/14x²+4x+5) [now distribute]
0=x²-56x+70 [try to factor into binomials first]
Since 70 only has prime factors of 2·5·7, there is no combination which equals (-56). Use the quadratic formula, or complete the square. I'll use quadratic:
x=<u>-b+/-√(b²-4ac)</u>
2a
a=1, b=(-56), c=70
x= <u>-(-56)+/- √((-56)²-4(1)(70)</u>
2(1)
x= <u>56+/- √(3136-280)
</u> 2
<u />x=<u>56+/-√(2856)</u>
2
x=<u>56+/-√(2³·3·119)</u>
2
x=<u>56+/-2√(714)</u>
2
x=28+√714; x=28-√714
Step-by-step explanation:
a. 12 + 4 = 16
1st left equation is matched to 4th right value
b. 3(4) + 7 = 19
2nd left equation is correctly matched to 2nd right value
c. 4(7) - 10 = 18
3rd left equation is matched to 1st right value
d. 1 / 2 × xy
1 / 2 × (4 × 7)
= 28 ÷ 2
= 14
4th left equation is matched to 3rd right value
