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LuckyWell [14K]
3 years ago
14

Solve each word problem using a system of equations. Use substitution or elimination.

Mathematics
1 answer:
nasty-shy [4]3 years ago
4 0

Answer:

Step-by-step explanation:

x + 3y = 24.....multiply by -1

5x + 3y = 36

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

-x - 3y = -24 (result of multiplying by -1)

5x + 3y = 36

------------------add

4x = 12

x = 12/4

x = 3 <=======

x + 3y = 24

3 + 3y = 24

3y = 24 - 3

3y = 21

y = 21/3

y = 7 <========

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Madaraka express arrived in Mombasa at 0545hrson Thursday after travelling for
Liono4ka [1.6K]

Answer:

Step-by-step explanation:

For this question, you count backwards from 0545hrs which is 5:45 am until 7hrs is reached.

5:45 am Thursday

↓

4:45 am Thursday

↓

3:45 am Thursday

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2:45 am Thursday

↓

1:45 am Thursday

↓

12:45 am Thursday

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11:45pm Wednesday

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10:45 pm Wednesday

Therefore, Madaraka express left Nairobi at 10:45 pm on Wednesday

4 0
3 years ago
What symbol makes the comparison true
olga_2 [115]
Depend on the comparison. if u want to see greater or less then use = < > or the difrent subtract . add if finding the total.
3 0
2 years ago
Pls help me it’s due today
Marina86 [1]

Answer:

x = 6.4

Step-by-step explanation:

Set up using proportion and cross multiply to solve:

8/10 = x/8

x = 6.4

5 0
2 years ago
The sum of a number and -3 is equal to -91.Find the number
larisa86 [58]
The sum of -3 and a number equal to -91 is -88
7 0
3 years ago
Simplify: −3 • −26<br><br> A. −78<br> B. −68<br> C. 68<br> D. 78
hammer [34]
-3 x -26 = 78

meaning the answer is D.

The reason the answer is D, is because two negatives when multiplied or divided become positive. Only when multiplied or divided does this occur.
3 0
1 year ago
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