Kieslynguillen31viz
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Evaluate each expression. Use the following values to answer the following:
a = 2 b = 3 c= 5, then choose your final answer in the choices.
Examples
1.4a + 2b-c
Solution : 4 (2) + 2 (3) - 5
4x2 + 2x3 - 5
8 6 -5 = 9
2. 6c - 4b
Solution : 6(5) - 4 (3)
6x5 - 4x3
30 - 12 = 18
Exercises: Choose your final answer in the box.
1. 2a + 7
2. 4c = a
3. (5 + b) = a
4. btc-a
5. a + bc)
6. 3c - 4b + a
7. 5b + 3C + 2a
8. 3C + 4b - 4a
9. 4c-2b
10. 2a + 2b + 20
CHOICES:
4.
10
17
5
11
18
6
12
19
8
14
20
9
15
34​

Sagot :

Kanemelicioviz

Answer:

1. 11

2. 18/20

3. 10

4. 6

5. 17

6. 5

7. 34

8. 19

9. 14

10. 30

Step-by-step explanation:

1. 2a + 7

2(2) + 7

2 x 2 + 7

4 + 7 = 11

2. 4c = a(?) or - a(?)

4(5) - 2

4 x 5 - 2 = 18

or

4 x 5 = 2 = 20

3. (5 + b) = a(?) or + a(?)

(5 +  3) + 2

8 + 2 = 10

4. b + c - a

3 + 5 - 2 = 6

5. a + bc

2 + 3(5)

2 + 3 x 5 = 17

6. 3c - 4b + a

3(5) - 4(3) + 2

3 x 5 - 4 x 3 + 2 = 5

7. 5b + 3c + 2a

5(3) + 3(5) + 2(2)

5 x 3 + 3 x 5 + 2 x 2 = 34

8. 3c + 4b - 4a

3(5) + 4(3) - 4(2)

3 x 5 + 4 x 3 - 4 x 2 = 19

9. 4c - 2b

4(5) - 2(3)

4 x 5 - 2 x 3 = 14

10. 2a + 2b + 20

2(2) + 2(3) + 20

2 x 2 + 2 x 3 + 20 = 30 (Not on the choices)

I'm not sure with number 10, I'm sorry

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