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labwork [276]
3 years ago
6

Ms.pacheco is three years older than mr.richards mr.edward is twice as old as mr.richard the sum of mr.richards age and mredward

s age is 81
Mathematics
1 answer:
iren [92.7K]3 years ago
5 0
Ms. Pacheco is 43 and a half
Mr. Richards is 40 and a half
Mr. Edwards is 81
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3r + 6y - 2z = -6 2x + y + 4z = 19 -5x - 2y+8z = 62<br>solve each system of equations​
nadya68 [22]
For the first equation

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3 years ago
Find two numbers that add to get -14 and multiple to get 33.
babymother [125]

Answer: -3 and -11

Step-by-step explanation: The only factors of 33 are 1, 3, 11, 33. 3 and 11 are the best canidates because 33 and 1 added together gives you 34. -11 and -3 added is -14

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3 years ago
Is there a direct proportion in 3y=1/2x? if there is one, what is the constant of proportionality?
kipiarov [429]
A direct proportion is any equation where y = mx+b. (i.e., a linear equation)

Each side of 3y = 1/2x can be divided by 3 to get y = 1/6x, satisfying the condition of y = mx+b. (b=0)

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6 0
3 years ago
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People use water to​ cook, clean, and drink every day. An estimate of 17.2% of the water used each day is for cooking . If a fam
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4 0
3 years ago
Ishaan is 2 times as old as Christopher. 35 years ago, Ishaan was 7 times as old as Christopher. How old is Ishaan now?
MrRissso [65]
I= Ishaan's age= 2C
C= Christopher's age

35 years ago means we have to subtract 35 from their current age. Ishaan minus 35 equals 7 times Christopher minus 35 years.

CHRISTOPHER'S AGE:
I - 35= 7(C-35)
substitute I=2C in for I
multiply 7 by all in parenthesis

2C - 35= 7C - 245

add 35 to both sides
2C= 7C - 210

subtract 7C from both sides
-5C = -210

divide both sides by -5

C= 42 Christopher's age


ISHAAN'S AGE:
I= 2C
substitute C=42 to find Ishaan's age
I= 2(42)

I= 84 Ishaan's age

CHECK:
Substitute answers in original equation

I - 35= 7(C-35)
84 - 35= 7(42-35)
49= (7*42)+(7*-35)
49= 294-245
49=49

Hope this helps! :)

6 0
3 years ago
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