Answer:
a) 40
b) 80
c) 77
d) 48
Step-by-step explanation:
To find the missing numerator, multiply the equation by the denominator of the fraction with the missing numerator.
a) (10/15)(60) = (x/60)(60)
40 = x
__
b) (x/180)(180) = (4/9)(180)
x = 80
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c) (7/11)(121) = (x/121)(121)
77 = x
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d) (x/144)(144) = (2/6)(144)
x = 48
Answer:
x^4 -2x^2 -24
Step-by-step explanation:
(x^2+4)(x^2−6)
FOIL
First: x^2*x^2 = x^4
Outer: x^2 *-6 = -6x^2
Inner: x^2 *4 = 4x^2
Last: 4*-6 = -24
Add them together
x^4 -6x^2 +4x^2 -24
Combine like terms
x^4 -2x^2 -24
This is in standard form since the powers decrease
Answer:
15, 17, 19, and 21
Step-by-step explanation:
make the equation
x+x+2+x+4+x+6=72
simplify
4x+12=72
x+3=18
x=15
Answer:
$184
Step-by-step explanation:
87 is 5 less than 1/2 of the price without a sale. in that case 92 would be half the cost. To find the full value you would multiply 92 by two to get 184
