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Juliette [100K]
3 years ago
5

Which situation models combining a number and its additive inverse to make 0? A. After spending $20.00, Marjorie has $20.00 left

in her wallet. B. The temperature at midnight was –8°F. The temperature decreased 8°F by morning. C. Tim has $25.00 in his bank account. He withdraws $25.00 from his bank account and gives it to his mother. D. An airplane is at an altitude of 50,000 feet. An hour later, the airplane is still at an altitude of 50,000 feet.
Mathematics
2 answers:
antoniya [11.8K]3 years ago
5 0

THat would be C

25,00 + (-25.00) = 0

Radda [10]3 years ago
4 0

Answer:

c

Step-by-step explanation:

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$800 is invested at a rate of 7%. What will be the total amount of the investment after 3 1/2 years?
torisob [31]

Answer:

A = $996.00

Step-by-step explanation:

(I = A - P = $196.00)

Equation:

A = P(1 + rt)

Where:

A = Total Accrued Amount (principal + interest)

P = Principal Amount

I = Interest Amount

r = Rate of Interest per year in decimal; r = R/100

R = Rate of Interest per year as a percent; R = r * 100

t = Time Period involved in months or years

From the base formula, A = P(1 + rt) derived from A = P + I and I = Prt so A = P + I = P + Prt = P(1 + rt)

Calculation:

First, converting R percent to r a decimal

r = R/100 = 7%/100 = 0.07 per year.

Solving our equation:

A = 800(1 + (0.07 × 3.5)) = 996

A = $996.00

The total amount accrued, principal plus interest, from simple interest on a principal of $800.00 at a rate of 7% per year for 3.5 years is $996.00.

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3 years ago
What is the distance in meter of an object that has an angular diameter of 30 arcseconds and a linear diameter of 10 cm?
Leya [2.2K]

Answer:

Distance of object = 0.0144 meter

Step-by-step explanation:

Given:

Angular diameter = 30 arcseconds = 30[100 / 3600]

Length of diameter = 10 cm

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Distance of object

Computation:

Distance of object = [(2)(a)][TanФ / 2]

Distance of object = [(2)(10)][Tan(300 / 7200]

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Distance of object = [20][0.00072]]

Distance of object = 0.0144 meter

3 0
3 years ago
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