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2 years ago

Carlos is helping his grandfather paint the patio in their backyard. What is the area of the patio?

Mathematics

1 answer:

Vadim26 [7]2 years ago

4 0

128 ft. for the square i square it so basically 8x8 and then the area for the triangle is 32 so i added them all together to get 128

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50 POINTS!!! Macy's has a sale on winter coats during the month of February. A coat is on sale for $175. This is 22% off the ori

klio [65]

1. First consider the unknown original price as 'x'.

2. Then consider the rate of discount.

3. To find the actual discount, multiply the discount rate by the original amount 'x'.

4. To find the sale price, subtract the actual discount from the original amount 'x' and equate this to given sale price.

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2 years ago

A national park covers 212375 acres

Gala2k [10]

What is the question

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3 years ago

Use the exponential decay model, Upper A equals Upper A 0 e Superscript kt, to solve the following. The half-life of a certai

Akimi4 [234]

Answer:

It will take 7 years ( approx )

Step-by-step explanation:

Given equation that shows the amount of the substance after t years,

$A=A_0 e^{kt}$

Where,

$A_0$ = Initial amount of the substance,

If the half life of the substance is 19 years,

Then if t = 19, amount of the substance = $\frac{A_0}{2}$ ,

i.e.

$\frac{A_0}{2}=A_0 e^{19k}$

$\frac{1}{2} = e^{19k}$

$0.5 = e^{19k}$

Taking ln both sides,

$\ln(0.5) = \ln(e^{19k})$

$\ln(0.5) = 19k$

$\implies k = \frac{\ln(0.5)}{19}\approx -0.03648$

Now, if the substance to decay to 78% of its original amount,

Then $A=78\% \text{ of }A_0 =\frac{78A_0}{100}=0.78 A_0$

$0.78 A_0=A_0 e^{-0.03648t}$

$0.78 = e^{-0.03648t}$

Again taking ln both sides,

$\ln(0.78) = -0.03648t$

$-0.24846=-0.03648t$

$\implies t = \frac{0.24846}{0.03648}=6.81085\approx 7$

Hence, approximately the substance would be 78% of its initial value after 7 years.

5 0

2 years ago

What are the coordinates of point P?

Nadusha1986 [10]

Answer:

(-4,3)

Step-by-step explanation:

hope this helps :)

6 0

2 years ago

Mr. Parker has 982 pounds of grain. He feeds 240 pounds ro his pigs and 460 to his cows. How much grain does he have left

denpristay [2]

Starting amount: 982 pounds of grain

Since Mr. Parker fed 240 pounds of grain to his pigs, subtract 240 pounds from 982 pounds of grain.

982 - 240 = 742

After feeding pigs: 742 pounds of grain

Mr. Parker fed another 460 pounds of grain to his cows from his 742 pounds, so subtract 460 pounds from 742 pounds.

742 - 460 = 282

After feeding pigs and cows: 282 pounds of grain

Mr. Parker has 282 pounds of grain left.

3 0

3 years ago