3 years ago

Write an expression to represent the phrase, "6 of one thing plus half a dozen of the other"

1 answer:

4 0

'of' means multiply
half a dozen means 12/2=6

6 of one thing means 6 times x
plus means ad
half a dozen of another mean 6 times y

they are added

6x+6y

2 variables
it says 'of the other' so they are diferent

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A certain number added to its square is 30. Find the number

Alex Ar [27]

X+x²=30
x²+x-30=0
(x+6)(x-5)=0
x=-6 or x=5

5 0

2 years ago

Please help me with this question I’m so confused

zavuch27 [327]

$s = ut + \frac{1}{2} a {t}^{2} \\ s = 10( \frac{1}{2} ) + \frac{1}{2} ( - 2) {( \frac{1}{2}) }^{2} \\ s = 10( \frac{1}{2} ) + \frac{1}{2} ( - 2)( \frac{1}{4} ) \\ s = 5 + ( - 1)( \frac{1}{4} ) \\ s = 5 + ( - \frac{1}{4} ) \\ s = 5 - \frac{1}{4} \\ s = \frac{20}{4} - \frac{1}{4} \\ s = \frac{19}{4}$