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MrRa [10]
3 years ago
11

If you wanted to create a sidewalk from your front door to the street, how much cement would you need if your sidewalk were goin

g to be the following dimensions

Mathematics
1 answer:
jek_recluse [69]3 years ago
6 0

It’s simple you just multiply all three numbers 20*3*4=240

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Help on this please.
dem82 [27]

Answer:

x = 46°

Step-by-step explanation:

the opposite angles of a cyclic quadrilateral are supplementary, sum to 180° , then

x + 134° = 180° ( subtract 134° from both sides )

x = 46°

8 0
2 years ago
2) A pair of socks is purchased for $3.00 it is then sold for $4.00 What is the percent of change that
Veronika [31]

Answer:

5% change

Step-by-step explanation:

4 0
3 years ago
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A blueprint for a new house has a scale of 1:50. Here are the dimensions of two rooms. Calculate the dimensions of each room on
Lorico [155]

Answer:

a.) =30.72*50

b.)13.02*50

Step-by-step explanation:

you got to calculate the area of the two rooms by multipling the sides.

as we know that the scale is 1:50, this means for every 1meter it is 50 meters.

once we have calculated the area of the space used multply it by 50 to get the area dimensions occupied

8 0
3 years ago
2.5 simplfied into a fraction <br><br> i need it for my math test tomorow!
mars1129 [50]

Answer:

2 1/2

Step-by-step explanation:

8 0
2 years ago
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Talulah is an ecologist who studies the change in the penguin population of Antarctica over time. She observed that the populati
Oksana_A [137]

Answer:

P(t) = 27000 * (1/9)^(t/4)

Step-by-step explanation:

This problem can me modelled with an exponencial formula:

P = Po * (1+r)^t

Where P is the final value, Po is the inicial value, r is the rate and t is the amount of time.

In this problem, we have that the inicial population/value is 27000, the rate is -8/9 (negative because the population decays), and the time t is in months, so as the rate is for every 4 months, we use the value (t/4) in the exponencial.

So, our function will be:

P(t) = 27000 * (1-8/9)^(t/4)

P(t) = 27000 * (1/9)^(t/4)

8 0
3 years ago
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