5 calculators cost $140.00
2 answers:
Answer:
The cost of 1 calculator is $28.00
Step-by-step explanation:
You haven't mentioned the question. Anyways if you want to find the value of 1 calculator, the simplest method ( in my opinion) you could do so in the ratio method:
5 calculators : $140
1 calculators : <em>x</em>
( x is the cost of 1 calculator. You have to find <em>x</em>. )
Cross multiply both the ratios. Multiply 5 with <em>x </em>and 140 with 1.
5<em>x </em>= 140 × 1
5<em>x</em> = 140
Bring 5 to the other makes 140 divided upon 5, as it was multiplied with x.
<em>x</em> =
<em>x</em> = $28
You could not only find the cost of 1 calculator, but any number of calculators. Just replace the number of calculators with 1 calculator that I have found the cost of.
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Answer:
Here You Go! I'm not really sure about this one but i tried.
Step-by-step explanation:
We want to multiply the monomial by the monomial
.
Remember that to multiply monomials we need to use the laws of exponents; in this case, the law for multiplying powers with the same base. The rule says that, when you multiply powers of the same base, you just need to add the exponents: ,
. Also, is worth pointing out that the exponent of a variable with no exponent is 1:
.
Remember that we also need to multiply their coefficients , which are the numbers that multiply the variables; again, variables with no numbers have a coefficient of 1, so . Multiply coefficients is easy, you just need to multiply them as you usually do with everyday numbers.
Let's apply all of that to our multiplication:
We can conclude that 2x times x squared is 2x cubed.