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leonid [27]
4 years ago
8

Which of the following shows 7 + (x + 4y) rewritten using the Associative Property of Addition? Select one: a. 7 + x + 4y b. 7x

+ (4 + y) c. (7 + x) + 4y d. x + (7 + 4y)
Mathematics
1 answer:
ipn [44]4 years ago
6 0
I'm pretty sure it's A. 7+x+4y, but I could be wrong.
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Suppose that a small family farm sold its output for $100,000 in a given year. The family spent $25,000 on fuel, $40,000 on seed
zheka24 [161]
First we have to evaluate our income: $100,000. And then the expenditure (sum of all expenses): $25,000 + $40,000 + $25,000 = $90,000. This is the expenditure, taken away from our income we get $10,000, this is the economic profit of the family farm.
8 0
3 years ago
Read 2 more answers
Using the function below, evaluate f(-2). *<br> 2 points<br> f(x) = 3x? - 5x - 2
monitta
Okay so I'm guessing that they are two different formulas the f(x)= 3x and the f(x)= -5x-2. If that's is true then you would just have to plug in -2 to the x's. So then it would be f(x)= 3(-2) which if you solve it would give you f(x)= -6 and for the second one it would be f(x)= -5(-2)-2 so then you would solve for it and get f(x)= 8.
6 0
3 years ago
Solve 2 ÷ x =5
Volgvan
So to help with the first one
2 / x = 5
multiply the x on both sides
2 = 5x
divide by 5 to isolate the x
2/5 = x

For the second one
We will use the diamond to help us find the common factor 
  \   1  /
   \    / 
    \  / 
 2 /  \   4
   / 3 \
  /      \

1) the product
2) and 4) the two numbers
and 3) is sum

10 is the product and -7 is the sum
so what two numbers (factors of 10)
will equal -7 when added

so we have these numbers that will equal the product of +10 and we will need to find the ones that will equal -7 as the sum
10*1, 2*5, -1*-10, -2*-5
if we add the two numbers we will find respectively
11, 7, -11, -7
As you can see that -2 + -5 = +10 and -2+-5= +10
So we have found the two numbers
now before we factor the expression looks like 
( x + a) (x + b)
and when factored looks like
x^2 + (a+b)x + (a*b)
Now we can plug in the numbers and solve to see if -2 and -5 are right
(x + -2) (x + -5)
we will factor it
x^2 +-5x + -2x + 10
x^2 + -7x + 10
so a = -2 and b = -5

Hope this helps :)
5 0
3 years ago
Bob just turned 66 years old and is considering retirement. His average annual salary over the last 35 years is $50,760. Assumin
natka813 [3]
The annual Social Security benefit is 42% of $50,760. 42% of $50,760 is $21,319.20. So Bob will receive $21,319.20  from his annual Social Security benefit. 
8 0
3 years ago
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The wholesale price for a of shoes is $7.50. A certain department store marks up the wholesale price by 50%. Find the price of t
morpeh [17]

Answer:

$11.25

Step-by-step explanation:

1.5×7.5=11.25

4 0
3 years ago
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