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abruzzese [7]
2 years ago
7

Which one A or B or C help pls!

Mathematics
2 answers:
Marrrta [24]2 years ago
3 0

Answer:

i think it c

Step-by-step explanation:

USPshnik [31]2 years ago
3 0

Answer:

def C

Step-by-step explanation:

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30 years ago zoe was 2/3 as old as luke, 18 years ago zoe was 5/6 as old as luke how old are they now
barxatty [35]

Based on the mathematical statements, Zoe is 56 years old and Luke is 66 years old, now

<h3>How to determine how old they are now?</h3>

From the question, we have the following statements that can be used in our computation:

<u>30 years ago</u>

Zoe was 2/3 as old as Luke

<u>18 years ago</u>

Zoe was 5/6 as old as Luke

Let their present ages be represented as

Zoe = x

Luke = y

So, we have the following representations

<u>30 years ago</u>

Zoe was 2/3 as old as Luke

x - 36 = 2/3(y - 36)

<u>18 years ago</u>

Zoe was 5/6 as old as Luke

x - 18 = 5/6(y - 18)

So, we have the following system of equations

x - 36 = 2/3(y - 36)

x - 18 = 5/6(y - 18)

Make x the subject in x - 18 = 5/6(y - 18)

x = 5/6(y - 18) + 16

Substitute x = 5/6(y - 18) + 16 in x - 36 = 2/3(y - 36)

5/6(y - 18) + 16 - 36 = 2/3(y - 36)

Open the brackets

5/6y - 15 + 16 - 36 = 2/3y - 24

Evaluate the like terms

5/6y - 35 = 2/3y - 24

Multiply through by 6

5y - 210 = 4y - 144

Evaluate the like terms

y = 66

Substitute y = 66 in x = 5/6(y - 18) + 16

x = 5/6(66 - 18) + 16

Evaluate

x = 56

Recall that

Zoe = x

Luke = y

So, we have

Zoe = x = 56

Luke = y = 66

Hence, they are 56 and 66 years, now

Read more about equations at

brainly.com/question/2476251

#SPJ1

5 0
1 year ago
Pythagorean Theorem( Radical Answers) Need this asap I would appreciate it:0
nexus9112 [7]

Answer:

2sqrt(13)

Step-by-step explanation:

x = sqrt(36 + 16)

x = sqrt(52)

x = sqrt(4*13) = 2sqrt(13)

5 0
2 years ago
Mr. Sutherland has 824 pencils in his desk.
VARVARA [1.3K]

Answer:

6 weeks

Step-by-step explanation:

824 - 764 = 60 / 10 = 6

3 0
3 years ago
What number goes into 99 this is prime factorrization
Sindrei [870]
1,3,9,11,99(Maybe more)
8 0
3 years ago
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Identify the percent of change as an increase or a decrease.
Svetllana [295]
If you are saying it is fractions a 4/5 to 3/5 then it is decreasing
but if you are saying it is fractions like 4/3 to 5/5 then it is well it is still decreasing
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