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hoa [83]
3 years ago
8

X/2+5x−7 when x=2. Solve please.

Mathematics
1 answer:
N76 [4]3 years ago
4 0
2/2+5(2)-7
1+10-7
11-7
4
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victus00 [196]
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2 years ago
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satela [25.4K]
MAE - 48 = 36 x 2
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4 0
3 years ago
Read 2 more answers
The coordinates of the endpoints of directed line sergeant ABC are A(-8,7) and C(7,-13). If AB:BC = 3:2 then the coordinates of
cestrela7 [59]

The correct answer is A) (1,-5)

Further explanation:

Given points are:

A(-8,7)=(x1,y1)

C(7,13)=(x2,y2)

IT is also given that

AB:BC=3:2

Which means that B divides the line segment in 3:2

Here,

m=3

n=2

To find the coordinates of B

x_B=\frac{mx_2+nx_1}{m+n}\\ = \frac{(3)(7)+(2)(-8)}{3+2}\\=\frac{21-16}{5}\\=\frac{5}{5}\\=1\\y_B=\frac{my_2+ny_1}{m+n}\\=\frac{(3)(-13)+(2)(7)}{3+2}\\=\frac{-39+14}{5}\\=\frac{-25}{5}\\=-5

The coordinates of point B are (1,-5)

The correct answer is A) (1,-5)

Keywords: Coordinate geometry, mid-point

Learn more about coordinate geometry at:

  • brainly.com/question/4819659
  • brainly.com/question/4691222

#learnwithBrainly

7 0
3 years ago
Help me plzzzzzzz guyssss
maks197457 [2]

Answer:

1. 75%

2. 20%

3. 20%

4. decrease 5.4%

Step-by-step explanation:

1. 119-68=51, 51/68=0.75

2. 30-24=6, 6/30=0.20

3. 18-15=3, 3/15=0.20

4. 762-721=41, 41/762=0.0538

5 0
2 years ago
On Wednesday, 30 students went to after school tutoring. On Thursday, 6 students went. What is the percent decrease in the numbe
Y_Kistochka [10]
Hmm, I believe the answer is 80%. 
It is a decrease.
30 - 6 = 24. 
24/30 = 80% decrease from Wednesday. 

6 0
2 years ago
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