X = 28
you divide 112 by 4 to get 28
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Answer:</h2>
Front-end estimation is a particular way of rounding numbers to estimate sums and differences.
To use front- end estimation, add or subtract only the numbers in the greatest place value. Then add the decimals rounded to the nearest tenth.
Step-by-step explanation:
In front end estimation we are going to replace the original number with a number that is close by but only has one non zero digit. Examples: {20, 300, -50, 1,000, 80,000}. For example take the number 32, the choices to replace it with are 30 or 40 (they both have only one non-zero digit).
10*10*10*10 = 10,000.
Because you can use either of then digits for each space.
Also, you can see that the valid numbers are from 0000 to 9999 = 9999 + 1 = 10,000 numbers.
Answer:
0.13 in²
Step-by-step explanation:
Given that,
→ Diameter = 0.4 in
→ Radius (r) = 0.4/2 = 0.2
Formula we use,
→ πr²
The area of the circle will be,
→ πr²
→ (22/7) × 0.2 × 0.2
→ 0.12571428571
→ [ 0.13 in² ]
Hence, area of circle is 0.13 in².
B=2h-7
Area of a triangle: A=1/2 of bh
replace b with 2h-7: A=(1/2)(2h-7)h=102 => (2h-7)h=204
2h^2-7h-204=0
factor or use quadratic function to solve
h=12
b=2*-7=17