What two numbers add to negative 9 but multiply to 24

Answers

Answer 1

Answer: There aren't any numbers that add to 24 but multiply to 9. But you can still factorise - remember, you only need to get numbers that add up to the middle number if the coefficient of y^2 is 1. That means if you just have y^2, not 2y^2 or 3y^2 or 16y^2 like we do here.

16y^2+24y+9 = (4y+3)^2

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a thirty pound bag of coffee mixture is to be made from a type of coffee that sells for $9.20 per pound and $11.00 per pound. If the mixture is to have a price of $10.28 how much of each type is included?

Answers

The system is something like this (you get fractional parts):
$x+y=1 \n 9.2x+11y=10.28 \n \n 11x+11y=11 \n 9.2x+11y=10.28 \n 1.8x=.72 \n x=((18)/(25))/((9)/(5))=(18)/(25)*(5)/(9)=(2)/(5)$
You get 2 parts of $9.20 coffee and 3 parts of $11 coffee in the mixture.

Solve, log.5^4+log4^.5

Answers

First, let's expand the logarithms.
$log _(5) 4+log_(4)5 = (log4)/(log5)+(log5)/(log4)$
This because $log_(y)x$ is equivalent to $(logx)/(logy)$
From there, you need to use a calculator to find the exact numerical value.
$(log4)/(log5)+(log5)/(log4) = 2.02231716359$

Tasha is measuring the charge c(t) in a battery that has been charged for t minutes. Which of the following is the most appropriate domain for c(t)?A.Positive integers only
B.All real numbers
C.All positive numbers
D.All integers

Answers

c(t)

In a function the domain is all the values of t while the range is all the values of c(t).

Since t represents time in minutes, most appropriate domain for c(t) is A. Positive integers only.

Positive integers are numbers that starts with 1 and so on...

PLEASE HELPslove for X

37

19.25

10.375

41