What type of real numbers are these.

Mathematics

1 answer:

Paha777 [63]3 years ago

5 0

They are all integers

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Morgan’s grandmother orders her groceries online and has them delivered to her house. Her bill is $120. She has a coupon for 20%

iragen [17]

Answer:

The total price of the groceries, including discount and tip is $110.4.

Step-by-step explanation:

Here, the bill amount of groceries = $120

Now, the coupon off = 20%

Calculating the discount, we get

20% of bill amount $120 = 20% of 120 = $\frac{20}{100} \times 120 = 24$

So, the 20% discount on the bill amount = $24

The actual payable amount = Bill Amount - Discount

= $120 - $24 = $96

Now, 15% tip is also applied on the actual payable amount $96.

15% of 96 = $\frac{15}{100} \times 96 = 14.4$

So, the total price t = Payable amount + Tip amount

= $96 + $14.4 = $110.4

or, t = $110.4

Hence, the total price of the groceries, including the discount and the tip is t = $110.4.

6 0

3 years ago

How much compound interest is earned on $24,500 principal, with an annual interest rate of 5% compounded annually, over years? c

Brilliant_brown [7]

It is C. Hope this helps. LOL

4 0

3 years ago

A population of bacteria is initially 6000. After three hours the population is 3000. If this rate of decay continues, find the

serious [3.7K]

Answer:

The equation is $A=6000e^{-0.23t}$ at a rate of -23%.

Step-by-step explanation:

Decay can be represented by the equation $A=A_0e^{rt}$ . We can find the rate at which it decays by using t=3 hours and A=3000. This means $A_0=6000$ in this context.

$A=A_0e^{rt}\\3000=6000e^{r(3)}$

$0.5=e^{(24.5)r}$

After substituting, we divided by 6000 to each side to get 0.5 on the left. Now to solve for r, we will take the natural log of both sides and use log rules to isolate r.

$ln 0.5=ln e^{(3)r}\\ln 0.5=3r (ln e)\\\frac{ln0.5}{3} =r$