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Greeley [361]
3 years ago
7

What is the area of a rectangle that measures 9cm by 81mm?

Mathematics
1 answer:
RUDIKE [14]3 years ago
3 0
Well, a Centimeter is 10 times bigger than a Milimeter.

So we can convert 9cm by multiplying it by 10

9 × 10= 90mm

SInce we know the length and width of the rectangle, we can now find the area of it, or "the space inside".

Area = length × width

Area = 90mm × 81mm
Area = 7290mm
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Answer:

82.47

Step-by-step explanation:

area of fountain: 201.06(see photo 1)

area of fountain and walkway:283.53(see photo 2)

area of walkway:82.47(subtract fountain area from fountain and walkway)

7 0
3 years ago
I need help... I tried but uhm... I cant find the right answer....
Marizza181 [45]

Answer:

14

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the total cost c a painter charges to paint a house depends on the number h of hours its takes to paint the house. this situatio
Ilya [14]

given that

c = 15h + 245

when h = 30.35  , cost c = (15 × 30.35) + 245

= 453.75 + 245 = 698.75

so cost if painter works = 698.75 unit of currency.

4 0
3 years ago
12) You can exchange $5 US dollars for L123 Honduran Lempiras. How many dollars can you exchange L2,300 for? ----​
Anit [1.1K]

Step-by-step explanation:

$5 US dollar = L123 Honduran Lempiras

L2300Honduran Lempiras = x ( Let $ be x)

By using chain rule, we get

5×2300 = 123×x

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6 0
1 year ago
A culture started with 5000 bacteria after 5 hours it grew to 6500 bacteria predict how many bacteria will be present after 16 h
postnew [5]

Answer:

After 16 hours bacterial count will be 11600.

Step-by-step explanation:

Bacterial growth is always an exponential growth in a given culture.So the formula for the growth will be

Final counts of bacteria = Initial counts × (rate of growth)^{time}

Given from first part Initial counts = 5000

Final counts= 6500 and time of growth = 5 hours

Then we will get the value of rate of growth of bacteria from the bacteria

⇒ 6500 = 5000×(rate)^{5}

(rate)^{5}= \frac{6500}{5000} = 1.3

Rate = \sqrt[5]{1.3} = 1.05

Now again to get the value of bacteria after 16 hours

Final Count = 5000×(1.05)^{16}

                   = 5000×2.32

                   = 11600


7 0
3 years ago
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