By rounding each number to 1 significant figure,estimate the answers to:
a)
8.2 x 6.7÷0.46
Answers
The estimated answer is 119.4
Here the number to be solved is
8.2 × 6.7 ÷0.46
8.2× 14.5652
= 119.4347
But here in the question, it is asked to round the number up to 1 significant figure. 1 significant figure means that only one number should be there after the decimal. Some example are
98.7645 ≈98.8
67.787 ≈67.9
Therefore the solution answer is 119.43478, and after rounding it up to 1 significant figure the answer of the solution is 119.4
To know more about the significant figure refer to the link given below:
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Final answer:
The question involves rounding off numbers to one significant figure and then performing a mathematical operation. By rounding off the given numbers and performing the operation, we get the value of '112'. However, rounding might affect the accuracy of the result.
Explanation:
The subject of this question is the process of rounding off numbers before you perform a calculation. The question is: By rounding each number to 1 significant figure, calculate the value of '8.2 x 6.7 ÷ 0.46'.
Firstly, we need to round off these numbers. So, '8.2' becomes '8', '6.7' becomes '7', and '0.46' becomes '0.5' when rounded to one significant figure.
Now we will calculate the expression using those rounded numbers.
Therefore, '8 x 7 ÷ 0.5' equals '112'.
So, by rounding each number to 1 significant figure, '8.2 x 6.7 ÷ 0.46' equals '112'.
It's important to note that rounding can affect the accuracy of your results, especially with more complex expressions or equations. In some situations, it's better to perform the calculation first and then round off the final result. This depends on the precision required for the task at hand.
Learn more about Rounding off Numbers here:
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Related Questions
Solve the following equation |-5x+20|=-15 for x
2+46×8÷2= can someone find the answer
On are recent 160 mile road trip ciara's car used 7 3/4 gallons of gas. how many gallons should she expect to use on a 250 mile road trip
Which statement illustrates the distributive property? Please help
The spilled sauce is creating a circular pattern on the tile. The area of the pattern can be expressed as A(r) = πr2.
Part A: Find the area of the circle of spilled sauce as a function of time, or A[r(t)]. Show your work. (6 points)
Part B: How large is the area of spilled sauce after 5 minutes? You may use 3.14 to approximate π in this problem. (4 points)
Answers
A(r)=pir^2
sub 2t for r
A(2t)=pi(2t)^2
A(2t)=4pit²
A. A=4pit²
B. t=5
A=4pi5²
A=4pi25
A=100pi
A=314 square units
Answer:
A: π(2t)^2 = 4πt^2
B: 4π5^2 5^2= 25x4= 100x3.14=314.
answer to B: 314(.159)
Step-by-step explanation:
b.) x = −4 and x = 0
c.) x = −20 and x = 4
d.) no solution
Answers
|x - 2| = 12 - 10 = 2
x - 2 = 2 or x - 2 = -2
x = 2 + 2 or x = -2 + 2
x = 4 or x = 0
Answers
Jane mows 1/4 of the lawn each hour.
Working together, they mow (1/3 + 1/4) of the lawn each hour.
In order to add the fractions, you need a common denominator.
12 will work:
(1/3 lawn/hour + 1/4 lawn/hour) = (4/12 + 3/12) = 7/12 lawn/hour.
This rate of work produces 12/7 hour/lawn.
12/7 hour = 1 hour 42 minutes 51.4 seconds
B. In slope-intercept form, the slope is − 7/9. These values are A and B, but with the opposite sign, so the slope of the line from the equation in standard form is − A/B.
C. In slope-intercept form, the slope is 14/9. These values are C and B, but with the opposite sign, so the slope of the line from the equation in standard form is − C/B.
D. In slope-intercept form, the slope is − 7/9. These values are A and B, but with the opposite sign, so the slope of the line from the equation in standard form is − B/A.
Answers
Answer:
B. In slope-intercept form, the slope is − 7/9. These values are A and B, but with the opposite sign, so the slope of the line from the equation in standard form is − A/B.
Step-by-step explanation:
Let's convert the standard equation into slope-intercept form:
- Ax + By = C ⇒ subtract Ax from both sides
- By = -Ax + C ⇒ divide both sides by B
- y = -A/Bx + C/B ⇒ converted to slope- intercept form
As we see the slope is -A/B
The equation 7x + 9y = 14 is converted as:
- y = -7/9x + 14/9, where the slope is -7/9
Looking at the answer options and the correct one is option B, where both identification of slopes match.
- B. In slope-intercept form, the slope is − 7/9. These values are A and B, but with the opposite sign, so the slope of the line from the equation in standard form is − A/B.
can someone simplify that
Answers
you put each power seperatly:
5y^4+(-3y^4)
-3y^3+6y^3
2y^2+(-4y^2)
-6y+-4y
5+(-8)
you get:
2y^4
3y^3
-2y^2
-10y
-2
so the answer is 2y^4+3y^3-2y^2-10y-2
Answers
Answer:
52
Step-by-step explanation:
We can find the percent of a number by converting the percent to a decimal.
65%=0.65
80(0.65)=52
To find 65% of 80, first write 65% as a decimal by moving the decimal point 2 places to the left and we will get .65. Next, the word "of" means multiply, so we have (.65) (80) = 52.
Therefore, 65% of 80 is 52.