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klasskru [66]
4 years ago
10

Solving systems of three equations w/ elimination

Mathematics
1 answer:
Feliz [49]4 years ago
8 0
I solved with addition elimination, and matrices elimination and received the same answer. (0,0,-3) I hope that helps.
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Consider this expression.(The square root of a to the power of 3 - 7 )+ lbl When a = 2 and b = -4, the value of the expression i
lesya692 [45]

Given that: a = 2, b = -4

\sqrt{a^3-7}\text{ + |b| = }\sqrt{2^3-7}\text{ + |-4| = }\sqrt{8-7}\text{ }+\text{ 4 = }\sqrt{1}+\text{ 4 = 1 + 4 = 5}

3 0
1 year ago
45% of 80.374 is a number between
tatiyna

Answer:

36.1683

Step-by-step explanation:

45*80.374/100=

7 0
3 years ago
Show that 5 2/3 - 3 4/5 = 1 13/15
topjm [15]

Answer:

True both are 28/15

Step-by-step explanation:

Simplify the following:

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

Put 3 + 4/5 over the common denominator 5. 3 + 4/5 = (5×3)/5 + 4/5:

5 + 2/3 - (5×3)/5 + 4/5

5×3 = 15:

5 + 2/3 - (15/5 + 4/5)

15/5 + 4/5 = (15 + 4)/5:

5 + 2/3 - (15 + 4)/5

15 + 4 = 19:

5 + 2/3 - 19/5

Put 5 + 2/3 - 19/5 over the common denominator 15. 5 + 2/3 - 19/5 = (15×5)/15 + (5×2)/15 + (3 (-19))/15:

(15×5)/15 + (5×2)/15 + (3 (-19))/15

15×5 = 75:

75/15 + (5×2)/15 + (3 (-19))/15

5×2 = 10:

75/15 + 10/15 + (3 (-19))/15

3 (-19) = -57:

75/15 + 10/15 + (-57)/15

75/15 + 10/15 - 57/15 = (75 + 10 - 57)/15:

(75 + 10 - 57)/15

| 7 | 5

+ | 1 | 0

| 8 | 5:

(85 - 57)/15

| 7 | 15

| 8 | 5

- | 5 | 7

| 2 | 8:

Answer: 28/15

______________________________________

Simplify the following:

1 + 13/15

Put 1 + 13/15 over the common denominator 15. 1 + 13/15 = 15/15 + 13/15:

15/15 + 13/15

15/15 + 13/15 = (15 + 13)/15:

(15 + 13)/15

| 1 | 5

+ | 1 | 3

| 2 | 8:

Answer: 28/15

3 0
3 years ago
Someone help :) please
maxonik [38]

Answer:

The line between the points C and E is parallel to the line between the points F and B

The line between the points A and E is parallel to the line between the points B and D

The line between the points A and C is parallel to the line between the points F and D

3 0
3 years ago
Joslyn wants to buy 4 packs of pens for $12.00 each and a pack of pencils for &6.00. How much money does she need
seropon [69]
$54 is your answer

You multiply $12.00 by 4 packs of pens and then add $6.00 for the pencils.
8 0
3 years ago
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