Rowan opens a savings account with $25 and saves $75 per

Mathematics

1 answer:

ANTONII [103]2 years ago

3 0

Answer:

y=75x+25

Step-by-step explanation:

We know that rowan opens the savings account with $25, so the y-intercept (or b) is 25 as this is what he starts with at 0 months. For each additional month, he saves $75, so we can set the slope to $75 and let x be the number of months. This linear equation will find the balance in Rowan's savings account

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To obtain information on the corrosion-resistance properties of a certain type of steel conduit, 45 specimens are buried in soil

Fiesta28 [93]

Answer:

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Step-by-step explanation:

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$H_a$ : The true average penetration is > 50 mils

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If the level of confidence is α = 0.05 then the $z_\alpha$ score against we are comparing with, is 1.64 (this is because the area under the normal curve N(0;1) to the right of 1.64 is 0.05)