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devlian [24]
2 years ago
6

For the expression 28-28z to have a negative​ value, what must be true about the value of z​?

Mathematics
1 answer:
SpyIntel [72]2 years ago
7 0

Answer:

z is greater or equal than 1

Step-by-step explanation:

28-28z<=0

28<=28z

z>=1

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So tis is a ratio  16 is to 3 or 16:3
if use 64 tea bags then how many cups of sugar so
turn 16:3 into fraction
16:3=16/3 or 3/16, it doesn't matter
then you want to find 64:x or 64/x or x/64

we know that 16/3=64/x because it tis an equivalent ratio
so 16/3=64/x
multiply both sdies by (3 times x)
16 times x times 3/3=64 times 3 times x/x
16 times x=64 times 3
16x=192
divide both sdies by 16
x=12
theanswer is 12 cups of sugar
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