Estudyante tulong estudyante
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Thanks in advance paps.
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eto lods. kung pwede hehe. maraming salamat lods! keep sharing!
salamat lodi keep sharing!You do not have permission to view the full content of this post. Log in or register now.
Welcomesalamat lodi keep sharing!
Step-by-step explanationYou do not have permission to view the full content of this post. Log in or register now.
maraming salamatStep-by-step explanation
1.
Given:
Let x and y = two numbers
x + y = 45 -> Equation 1
x = 2y (one number is TWICE as large as the second number) -> Equation 2
Solution:
x + y = 45
We substitute x from the second equation to the first equation:
[@x = 2y]
2y + y = 45
3y = 45
y = 45/3
y = 15
Then, we solve for x by substituting the value of y above to the second equation:
x = 2(15)
x = 30
Answer: The numbers are 15 and 30.
2.
Given:
Total Number of Fruits = 16
Let
M =number of Maria's fruits
J =number of Jack's fruits
P =number of Paul's fruits
M = 3J + 3 (three more than thrice fruits as Jack) -> Equation 1
P = 3J - 1 (one less than thrice fruits as jack) -> Equation 2
M + P + J = 16 -> Equation 3
Solution:
We substitute equations 1 and 2 to equation 3:
(3J + 3) + (3J - 1) + J = 16
3J + 3 + 3J - 1 + J = 16
7J + 2 = 16
7J = 16 - 2
7J = 14
J = 14/7
J = 2 fruits
Then, we substitute the value of J we obtained from above to equations 1 and 2:
Equation 1:
M = 3J + 3
[@ J = 2]
M = 3(2) + 3
M = 6 + 3
M = 9 fruits
Equation 2:
P = 3J - 1
[@ J = 2]
P = 3(2) - 1
P = 6 - 1
P = 5 fruits
Answer:
3.
- Jack has 2 fruits
- Mary has 9 fruits
- Paul has 5 fruits
Given:
Depth of Well = 30 ft
Let x = number of days
Jump Length = 3x feet
Fall Length = - 2x feet
Solution:
We just add the Jump length to the fall length and equate their sum to 30 ft:
Jump Length + Fall Length = 30 ft
3x + (-2x) = 30
Answer: x = 30 days
4. Yes, we just need a 3-digit 8 added to a 2-digit 8 and three one-digit 8s:
888 + 88 + 8 + 8 + 8 = 1000
Welcomemaraming salamat
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Sir pa try unlock po nito thanks