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AleksAgata [21]
3 years ago
6

Simplify the expression. (7x + 3) + (4x - 1) - (2x + 4)

Mathematics
1 answer:
Crazy boy [7]3 years ago
3 0

Answer:

9x -2

Step-by-step explanation:

(7x + 3) + (4x - 1) - (2x + 4)

Distribute the minus sign

(7x + 3) + (4x - 1) - 2x - 4

Combine like terms

7x+4x-2x   +3 -1-4

9x                -2

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Find f(-1), f(0), f(3) for the following function.<br> f(x)=3x<br> f(-1)=Blank
kramer

Answer:

If f(x) = 3x, this means that any number that replaces x in the parenthesis, would replace x in the right side too.

When x = -1:

f(-1) = 3(-1) = -3

When x = 0:

f(0) = 3(0) = 0

When x = 3:

f(3) = 3(3) = 9

~


8 0
3 years ago
Joanne and Ed Greenwood built a new barn with an attached arena. To finance the loan, they paid $1,326 interest on $47,600 at 4%
gizmo_the_mogwai [7]

Answer:

Step-by-step explanation

Note that

Interest is represented by I=1326

The principal is represented by P=47,600

Rate is R =4%

And Time is year

Interest is calculated using the formulae,

I =PRT/100

From the above formulae, time can be calculated as

T=100I/PR

T= 100×1326/(47600×4)

T= 132600/190400

T= 0.6964 years

To convert to days, multiply by 365(since those no of days make a year)

T= 0.6964×365=254 days

This was approximated to the nearest day

Answer is 254 days

6 0
3 years ago
Someone please help??
ivolga24 [154]

(B) is your answer for sure is what i would say

3 0
3 years ago
Mrs. Gilbert is interested in determining how many students spend 4 or more hours doing homework each week. She asks every stude
docker41 [41]

Answer:

C. Biased, because she only asked students on honor roll.

Step-by-step explanation:

Since Mrs. Gilbert's goal was to find how many students that spent >4 hours and not how many students that earned Honor Roll that spent >4 hours, the data is biased. Choose C.

4 0
3 years ago
In a group of 54 children, there are twice as many boys as girls how many girls are there
vlabodo [156]
2x + x = 54   wher x = number of girls

3x = 54 
x = 18 

18 girls

7 0
3 years ago
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