To solve the equation 5x = 20 you can use the multiplication property of equality. Plz help

Mathematics

2 answers:

mel-nik [20]3 years ago

6 0

Plug in 4 for X

5(4)=20

IgorC [24]3 years ago

3 0

5x4=20
X=4
Hope it helps
Not sure if it’s right or not

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Let x and y represent the tens digit and ones digit of a two digit number, respectively. The sum of the digirs of a two digit nu

gayaneshka [121]

Answer:

The Original Number is 36

Step-by-step explanation:

Given:

y is the number in units place

x is the number in tens place

Original Number = $10x+y$

$x+y=9$ is equation 1

Now after interchanging the digits

New number = $10y+x$

New Number = 27 + Original Number

Substituting Valus in above equation we get.

$10y+x=27+10x+y\\10y-y+x-10x=27\\9y-9x=27\\9(y-x)=27\\y-x=\frac{27}{9}\\$

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Adding equation 1 and 2 we get

$(x+y=9)+(y-x=3)\\2y=12\\y=\frac{12}{2}\\y= 6\\$

Substituting value of y in equation 1 we get

$x+y=9\\x+6=9\\x=9-6\\x=3$

x=3 and y=6

Original Number = $10x+y=10\times3+6=30+6=36$

4 0

3 years ago

According to the graph, if only one unit was produced, the cost per unit would be $1.00. In

riadik2000 [5.3K]

Answer:

Modify (restrict) the function's Domain as indicated below

Step-by-step explanation:

The factory would study the expenses involved with setting the factory into production, wages for workers' salaries, and other factory running expenses into the total cost of producing the units (such would obviously drastically change the graph from the one presented), and make sure that there is a threshold at least on the "breaking even" with the estimated revenue coming from the units produced/ordered.

That threshold can be set to a "<em>minimal</em>" number of units ordered in order to start production. If one wants to use the original graph, with some minor modifications, one can change it so it starts from that threshold point onward. For example, if the minimal number of units to be produced in order to "break even" considering the "revenue minus total expenses larger than zero" condition, the given graph could be modified to the one shown in red in the image attached. In such graph we are estimating that the positive "revenue minus total cost" break even point is at the production of 13,000 units, so we set the starting of the piece-wise function there, and use a non-solid dot to indicate that the number of units produce should be strictly larger than the break-even point (13,000 units) in order to be profitable. This involves a change in the original function's Domain, restricting its first section from the original one (which starts at zero: $0\leq x\leq 25,000$ ) to a domain that starts at a number of units strictly larger than 13,000 ( $13,000$ ) in our example