A student solved this problem and said the answer is 5 pounds. Todd has two packages of hamburger. One package weighs 4/5 pound and the other weighs 9/10 pound. What is the total weight of both packages of hamburger combined?

Is the student's answer reasonable?

Answers

Answer 1

Answer: No, the students answer is decently far off the correct answer would be 1 7/10 pounds because, to add fractions you first need to find a common denominator that both of the numbers go into for example for this one 10 is a common denominator because 5 goes into 10 twice and 10 goes into 10 once so we multiply 4/5 by 2 because it take twice the amount of 5 to get to 10 and what we do to one side we must replicate on the other side as well. Like so,
4/5*2=8/10 now all the we have to do is take 8/10+9/10=17/10 and simplifying that down you get 1 7/10 because 10 goes into 17/10 one time with 7 left over and because 7 is prime that answer can not be simplified down any more.

Enjoy!=)

Answer 2

Answer: The answer is no, because the net weight or the pounds the packages weigh together isn't close to 5 pounds---------->

given
two packages of hamburgers
4/5 of a pound, package 1
9/10 of a pound, package 2
--------------------------------
10/10 =1pound
5X 10/10= 50/10= 5pounds
first convert both to same denominator, find the lowest common multiple between the denominators, 10,5
10 is the smallest so lets turn all answer into something over #/10
4 X
-- = --
5 10
  √
5x2=10
what ever you multiply the bottom you multiply to the top
we multiplied the bottom by 2 so we need to multiply the top by 2/ 4X2=8
8
--
10
-------------
since 9/10 already has 10 in the denominator we can keep this as this is
-----------------------------------------------------------------------------------
8 9 17   7 17   17 50
-- + --= --- = 1 -- =---pounds of hamburgers.   -- ≠5 pound/ --- pounds
10 10 10 10 10          10 10

≠ doesn't/don't equal

check with teacher

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isabella has found that she stays the most fit by running variouse dinstances and terrains through out the week. On mondays she runs 2.5 miles, on tuesdays 4.6 miles, on thursdays 6.75 miles, and on saturdays 4.8 miles. What is the average distance isabella runs on each of the days that she runs? round to the nearest hunfreth of a mile

Answers

Monday . . . . . 2.5 miles
Tuesday . . . . . 4.6
Thursday . . . . 6.75
Saturday . . . . . 4.8

Total = 18.65 miles
Days per week = 4

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Does the equation y= -1/x represent a direct or inverse variation?

Answers

The equation y = -1/x represent a inverse variation

Solution:

Given, equation is $y = (-1)/(x)$

We have to find the relation between x and y

Now, for finding the relation we have to take two sets of values of x and y and substitute them in given equation.

$\begin{array}{l}{\text { Now, take } y=1 \rightarrow 1=-(1)/(x) \rightarrow x=-1} \n\n {\text { Now, take } y=-1 \rightarrow-1=-(1)/(x) \rightarrow x=1}\end{array}$

If we observe, when y value is decreased from 1 to – 1, the value of x is increased from -1 to 1

Hence, the x and y varies inversely

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12+-132
v+914=-23

Answers

1. a=-12
2. 120
3.-937

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