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Dafna1 [17]
3 years ago
7

Lake Chad in Africa had a surface area of about 10,000 square miles in 1963. Because of climate changes and increased water usag

e by humans, the surface area decreases to about 850 square miles in 2001. By what percent did the surface area change from 1963 to 2001?
Mathematics
1 answer:
9966 [12]3 years ago
8 0

Answer:

Answer is 91.5%

Step-by-step explanation:

In 1963= 10,000 sq miles; In 2001= 850 sq miles

  • Now applying formula of percentage of decrease we get:

% = Decrease in Amount/ Actual Amount

  • Applying values in formula:

= 10000-850/10000

= 9150/10000

% = 0.915

In percentage we get 91.5%

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A sheet of glass has a density of 2.5 g/cm3. what is the density of the glass in kg/m3
asambeis [7]

Answer:

this is ez

Step-by-step explanation:

2.5 g converted to kg: 2.5 g x 1 kg/1000 g = 0.0025 kg = 2.5x10-3 kg

cm3 converted to m3: 1 cm3 x 10-6 m3/cm3 = 1x10-6 m3

Thus, the conversion of 2.5 g/cm3 to kg/m3 would be 2.5x10-3 kg/10-6 m3 = 2.5x103 kg/m3 = 2500 kg/m3

7 0
3 years ago
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Let q(x)=8x-7 what is q(4) a. 25 b. 36 c. 39 d. 32
zhuklara [117]
I hope this helps you



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Svetradugi [14.3K]

Answer:

The place value to which the number is rounded is unit place.

Step-by-step explanation:

Here, the number 3.695 is rounded to the number 4 and we have to name the place value to which the number is rounded.

Here, the place value to which the number is rounded is unit place.

And the name of the rounding is the rounding to the nearest whole number i.e. there will be no fractional part in the rounded number.

Another example is the number 0.917 is rounded to the nearest whole number to give 1. (Answer)

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Money of account is 58.19+2.74__60.85
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