Answer:
Step-by-step explanation:
pivoting means producing a unit column in matrices.
The aim is to make the elements above and below the pivot element o.
so we have;
we will make the pivot element a unit element that is 1.
→
next we perform the operation - then we have
next we also perform the operation thus we have
Answer:
x=120
Step-by-step explanation:
Answer:
A bag of chips costs $1
A pickle costs $1.25
Step-by-step explanation:
P + 2c = 3.25 Start with these two equations
3p + 4c = 7.25
p = -2c + 3.25 Solve for one variable
3(-2c +3.25) + 4c = 7.25 Substitute
-6c + 9.75 + 4c = 7.25
-2c = -2
c = 1
p + 2(1) = 3.25 Substitute
p + 2 = 3.25
p = 1.25
From the power rules, the matching of each expression with its result is:
<h3>Power Rules</h3>
There are different power rules, see some them:
1. Multiplication with the same base: you should repeat the base and add the exponents.
2. Division with the same base: you should repeat the base and subctract the exponents.
3.Power. For this rule, you should repeat the base and multiply the exponents.
4. Zero Exponent. When you have an exponent equals to zero, the result must be 1.
From this for your question, you have:
- - From the distributive property of multiplication and power rules you can do:
- - From the distributive property of multiplication and power rules you can do:
- - From the distributive property of multiplication and power rules you can do:
- - From the distributive property of multiplication and power rules you can do:
Read more about power rules here:
brainly.com/question/12140519
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Answer:
He will be unable to tell whether a difference in exercise preference is related to a difference in age or to a difference in weight
Step-by-step explanation:
age could be a factor to exercise as well as weight so both affect the outcome so he has two samples