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Galina-37 [17]
2 years ago
13

If x = 3, then the value of  2x + 7 - x is?​

Mathematics
1 answer:
alekssr [168]2 years ago
8 0

Answer:

10

Step-by-step explanation:

Given  2x + 7 - x    when x = 3

2(3) + 7 - 3

6 + 7 - 3

6 + 4

10

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Erin writes the set of ordered pairs below. The set represents a function.
sukhopar [10]

Answer:

A,B,

Step-by-step explanation:

A function cannot have the same x values but can have the same y values.

Is D supposed to be (-1,7) by the way? If it is the answer will be A,B,D.

If this answer has helped you please mark as brainliest

5 0
2 years ago
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Equation of a line in point slope form passing through (8,2) and (4,5)
adelina 88 [10]
The equation of a line is typically written as y=mx+b<span> where </span>m<span> is the slope and </span>b<span> is the y-intercept.</span>

If you a point that a line passes through, and its slope, this page will show you how to find the equation of the line.

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3 0
3 years ago
2^x + 3^y = 9<br>2^x+1 - 3^y+1=8<br>find x and y​
Taya2010 [7]

Suppose :

2^x = t ..**&**.. 3^y = u

_____________________________

t + u = 9 × 3 3t + 3u = 27

=====》

2t - 3u = 8 2t - 3u = 8

+ __________

5t = 35

5 × t = 5 × 7

t = 7

&

u = 2

________________________________

Thus :

2^x = 7 ===》 x = Log _ 2 { 7 }

3^y = 2 ===》 y = Log _ 3 { 2 }

8 0
3 years ago
A box at a miniature golf course contains contains 4 red golf balls, 8 green golf balls, and 7 yellow golf balls. What is the pr
Solnce55 [7]

Answer:

 =57.89%

Step-by-step explanation:

The total number of golf ball is 4+8+7 = 19

P (red or yellow) = number of red or yellow

                              ------------------------------------

                                total number of golf balls

                           = 4+7

                              -----

                              19

                         =11/19

Changing this to a percent means changing it to a decimal and multiplying by 100%

                        = .578947368 * 100%

                         =57.8947368%

Rounding to two decimal places

                         =57.89%

7 0
3 years ago
Here are two shapes with the same area. Work out the perimiter of the rectangle.
Lilit [14]
So, we know the perimeter is 24 cm. and the top part is the left part, (x) + 2, but remember, we need to have it be a number that, multiplied by 2, is 24. So, using this formula, the length, (top / bottom) is 7, and x = 5. Because 5 + 5 = 10, and when length is +2, it adds up to 14. 10 + 14 = 24. So, length is 7, width, (left, right) is 5.
3 0
3 years ago
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