71000 is in the standard form of 7.1 x 10^-3 .
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I wish if I could explain you with steps but this is the question I've never done with steps. I always give direct answers from those questions !!
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I think it is the last one
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Answer:
Yes, Amanda has enough materials to make the concrete mix.
Step-by-step explanation:
Total units = 1+3+5
= 9
9 units = 630kg
1 unit = 630kg ÷ 9
= 70kg (Less than 80kg of cement, more than enough)
3 units = 3 × 70kg
= 210kg (Less than 215kg of sand, more than enough sand)
5 units = 5 × 70kg
= 350kg (Less than 370kg of gravel, more than enough gravel)
Answer:
sorry but i need some points right now so just ignore this
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Answer:
multiply both sides by 30 in fraction form 30 / 30
& 570 for the blank square for numerator of 30
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