Dalls needs 1/4 liter of milk of a recipe is 3/10 of a liter of milk left in the carton.

Mathematics

1 answer:

dolphi86 [110]3 years ago

5 0

Answer:

B)1/20 of a liter

Step-by-step explanation:

1/4 = 5/20

3/10 = 6/20

6/20 - 5/20 = 1/20

Wow.. that was easy XD

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Wich of following are solutions to |x+3|= 4x -7 Answer x= 10/3

Ludmilka [50]

Answer:

10/3

Step-by-step explanation:

|x+3|=4x-7

So |-(x+3)|=|x+3|

We are going to try out two cases:

-(x+3)=4x-7 and x+3=4x-7

-x-3=4x-7 3=3x-7

-3=5x-7 10=3x

4=5x x=10/3

x=4/5

We are going to test out both because we could something that isn't actually a solution, this is called extraneous.

First thing I'm going to check is 4x-7 for it being positive.

4(4/5)-7=20/5-7=-15/5=-3 so 4/5 will not work because absolute value result can't be negative

4(10/3)-7=40/3-7=19/3 which is positive

checking |x+3| to see if is 19/3 for x=10/3 we see that is so that is the answer

5 0

3 years ago

Solve for q - 3/4q = 12 q = ___

Alex Ar [27]

$\text{We know: } \\ \boxed{\frac{\ -3\ }{\ 4\ }*q=12 } \\ \\ q=12: \frac{\ -3\ }{\ 4\ } \\ \\ q=12* \frac{\ 4\ }{\ -3\ } \\ \\ q= \frac{\ 48\ } {\ -3\ } \\ \\ q=-16 \\ ********** \\ \\ \text{Check:}\\ \\ \boxed{ \frac{-3}{4}*-16=12 } \\ \\ \frac{48}{4} =12 \ TRUE$