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vlabodo [156]
3 years ago
12

- 5 - 2 (a - b) + 2 (a - b) -3 (a - b) + 3 = ?

Mathematics
2 answers:
zzz [600]3 years ago
7 0
Collect like terms and you'll get -2 - 3(a - b)
ehidna [41]3 years ago
7 0
The answer is -2 and -6
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Graph the relation and it's inverse. Use open circles to graph the points of the inverse
joja [24]

Step-by-step explanation:

We are given a set of points (0,3), (4,2), (9,7) and (10,-1) representing a function.

It is required to graph the function and its inverse.

As we know that, the inverse of a function is reflected by y=x line on the graph.

So, in order to find the inverse we have to replace the co-ordinate (x,y) by (y,x).

Then the points (3,0), (2,4), (7,9) and (-1,10) represents the inverse of the function.

So, after plotting all the points of the function and its inverse, we get the following graph, where figure 1 is of the function and figure 2 is of its inverse.

3 0
3 years ago
Read 2 more answers
a sample of ore is found to be 0.0015% gold and 0.034% copper. what is the percentage of matter in the ore that is neither gold
Ipatiy [6.2K]
100 - 0.034 - 0.0015 = 99.9645
4 0
3 years ago
Use the information in the diagram to determine the height of the tree to the nearest foot.
Illusion [34]
The answer is 80 ft. 

Based on the diagram we know that the tree triangle and the building triangle are similar triangles where the lengths of each are proportional to the other. 

The lengths of the triangle the tree makes are half of the lengths of the building triangle. So this problem can be solved using ratio and proportion:

\frac{144}{160} =  \frac{72}{x}

to solve for x, all you need to do is cross multiply then divide. 

\frac{160*72}{144} =x

The answer is then 80ft.

Another way to solve this is just by using logic. If the lengths of the tree triangle is half of the building, simply divide the lengths of the building triangle by two. 

160ft/2 = 80ft. 

8 0
3 years ago
I need help. Work has to be shown but i don’t know how to do them
mote1985 [20]

Step-by-step explanation:

1.

1% of 500 is 5 so multiply 5 by 8 for one year. which is 40 so multiply that by 2.

1% of 500 = 5

5 × 8 = 40

40 × 2 = 80

2.

1% of 1000 = 10

10 × 5 = 50

50 × 3 = 150

3.

12 months = 6%

6/12 = 1 month

0.5 = 1 month

0.5 × 9 = 4.5 (the amount of interest for 9 months.)

800 × 4.5% = 36

4.

12 months = 7%

7/12 = 1 month ( i'll leave this in fraction form because of the decimal points.)

7/12 x 8 = 4.666667 or 4.7 rounded.

1200 × 4.7% = 56.40

8 0
2 years ago
Point J is located at (-6, -2) on the coordinate plane. Point J is reflected over the
solong [7]

Answer:

J (-6 , -2), J': (-6 , 2), J'': (6 , 2)

Step-by-step explanation:

J (-6 , -2)

J': (-6 , 2)

J'': (6 , 2)

7 0
3 years ago
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