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Kipish [7]
3 years ago
9

A piece of wire 6 cm long weighs 30 grams. What is the weight of an 8 m length of the same wire?

Mathematics
1 answer:
Feliz [49]3 years ago
5 0

Answer:

4000 gm

Step-by-step explanation:

We can use ratios to solve

Change 8 m to cm

8m * 100cm/1m = 800 cm

6 cm             800 cm

-------------  = ------------

30 grams      x gm

Using cross products

6 * x = 800 * 30

6x = 24000

Divide by 6

6x/6 = 24000/6

x = 4000 gm

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a culture started withwith 2,000 bacteria. after 6 hours, it grew to 2,200 bacteria. predict how many bacteria will be present a
Vilka [71]
I think the answer is 2,400
6 0
3 years ago
3. Paula commutes 60 km each day for work, five days a week, nine months of the year. She travels 720
bezimeni [28]

Answer:

16,080 km.

Step-by-step explanation:

We want the total number of kilometers in one year.

so

4 weeks /month.

for Work:   9 months in the year  60 km/day  5 days/week

Family Visit :  720 km for 4 times a year

Personal:  200 km / month

Work total = 60 km/day * 5 days/week * 4week/month * 9 months

WorkTotal= 60*5*4*9 = 10,800 km

FamilyTotal= 4*720 = 2880 km

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Total = 10,800 + 2880 + 2400 = 16,080 km

7 0
4 years ago
Is n÷12=36,n=108 true or false​
maksim [4K]

Answer:

False

Step-by-step explanation:

n÷12=36

n=36*12

hence n=432

hope it helps you and give me a brainliest

4 0
2 years ago
Read 2 more answers
A football is thrown from the stadium. The height of this football can be represented by the polynomial -16t2 +32t + 20, where t
olasank [31]

Answer:

C

Step-by-step explanation:

related equation

-16t^2 + 32t + 20 = 0

-4t^2 + 8t + 5 = 0

Δ/4 = 16 + 20 = 36

t1 = (-4 + 6)/-4 = -1/2

t2 = (-4 - 6)/-4 = 5/2

-16(t+1/2)(t-5/2)

-16(2t+1/2)(2t-5/2)

-4(2t+1)(2t-5)

5 0
3 years ago
Find x (Geometry)<br> Full working out pls. Thank you
vichka [17]

in 1st figure

2:1=(x+2):2

2/1=(x+2)/2

4=x+2

x=2.

Similarly in the 2nd figure

8:5=(8+3):(5+x)

8/5 = 11/ (5+x)

8(5+x) =55

40+8x=55

8x=15

x=15/8

x=1.875

7 0
4 years ago
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