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Phoenix [80]
3 years ago
14

The sum of seven times a number, and 2, is equal to six times the number.

Mathematics
2 answers:
Olegator [25]3 years ago
6 0
Sum means addition. Times means multiplication, and "is" means an equality, or equals. We use a variable to represent the unknown number.

So 7x+7 is the sum of seven times a number and 7. 6x means six times the number. 6x is 7x+7, leading to the final answer 7x+7=6x.
Maslowich3 years ago
5 0

Answer:

(7x + 2) = 6x

x = -2

Step-by-step explanation:

(7x + 2) = 6x

-2 -2

———————

7x = 6x - 2

-6 -6

———————

1x = -2

=

x = -2

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The length of a new rectangular playing field is 4 yards longer than triple the width. if the perimeter of the rectangular playi
jasenka [17]
The length is 4 yards longer than 3width so L = 3W+4
perimeter equal 408 yards

perimeter equal 2L +2W = 2(3W+4)+2W 

408 = 6W +8 +2W
400=8W

W = 50

L = 3*50 +4 = 154

L = 154
W = 50

P = 2L +2W
408 = 2*50 +2*154
408 = 100 +308
408 = 408

hope that this is easy understandably 
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3 years ago
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See the attached picture for the calculation:

7 0
2 years ago
The videography team entered a contest and won a monetary prize of 1,350. Which expression represents how much each person would
Drupady [299]

Answer:

1350/x or 1350÷x

Step-by-step explanation:

6 0
3 years ago
This is factoring trinomials,help plz!
MaRussiya [10]
10.
Factor the following:
8 x^2 - 2 x - 10
Factor 2 out of 8 x^2 - 2 x - 10:
2 (4 x^2 - x - 5)

Factor the quadratic 4 x^2 - x - 5. The coefficient of x^2 is 4 and the constant term is -5. The product of 4 and -5 is -20. The factors of -20 which sum to -1 are 4 and -5. So 4 x^2 - x - 5 = 4 x^2 - 5 x + 4 x - 5 = 4 x (x + 1) - 5 (x + 1):
2 4 x (x + 1) - 5 (x + 1)
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_____________________________________________

13. 
Factor the following:
16 x^2 - 24 x + 8

Factor 8 out of 16 x^2 - 24 x + 8:
8 (2 x^2 - 3 x + 1)

Factor the quadratic 2 x^2 - 3 x + 1. The coefficient of x^2 is 2 and the constant term is 1. The product of 2 and 1 is 2. The factors of 2 which sum to -3 are -1 and -2. So 2 x^2 - 3 x + 1 = 2 x^2 - 2 x - x + 1 = -(2 x - 1) + x (2 x - 1):
8 x (2 x - 1) - (2 x - 1)

Factor 2 x - 1 from x (2 x - 1) - (2 x - 1):
Answer: 8 (2 x - 1) (x - 1)
8 0
3 years ago
The graph shows the exponential regression model for data representing a rabbit population after x years. Which is true of the r
tamaranim1 [39]

Answer: The graph of the regression model can be used to predict the population size for any number of years in the future.

Step-by-step explanation:

Since with help of the given graph, we can say that

The graph of the regression model is applied for the every real value of x.

Thus the statement The graph of the regression model is limited to whole-number values for x is false.

Also, the range of an exponential function is always a set of real number.

Therefore, The graph of the regression model is limited to whole-number values for y is false.

Since, for 1 year, the approximate population is given,

Therefore, The graph of the regression model cannot be used to approximate the population size for year 1 is false.

Again according to the given graph we can say that we can get the population for any number of year.

Thus, The graph of the regression model can be used to predict the population size for any number of years in the future is true.


5 0
3 years ago
Read 2 more answers
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