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lara [203]
3 years ago
13

Martina is currently 16 years older than her cousin Joey. In 5 years she will be 3 times as old as Joey. Use this information to

answer the following questions. If you let x represent Joey’s current age, what expression can you use to represent Martina’s current age? Based on your answer to part a, what expression represents Joey’s age in 5 years? What expression represents Martina’s age in 5 years? What equation can you write based on the information given? What is Joey’s current age? What is Martina’s current age?
Mathematics
2 answers:
marishachu [46]3 years ago
8 0
<span>m = j + 16
m + 5 = 3j
---
put the system of linear equations into standard form
---
m - j = 16
m - 3j = -5
---
x - y = 16
x - 3y = -5

so now that you have your equations formed, just solve. 

x - y = 16 , which means that x = y + 16 
substitute for x in the second equation : 
 
Hope this helps

</span>
Semmy [17]3 years ago
3 0
M=martina's age now
x=joe's age now

m is 16 older than x means
m=16+x


in 5 years (m+5 and x+5) she will be 3 times as old a joey
m+5=3(x+5)

so
we have
m=16+x
m+5=3(x+5)



a.
m=16+x

b.
x+5
m+5

c.
m=16+x
m+5=3(x+5)

d.
solving
sub 16+x for m
16+x+5=3(x+5)
distribute and add like terms
21+x=3x+15
minus x both sides
21=2x+15
minus 15 both sides
6=2x
divide by 2
3=x

m=16+x
m=16+3
m=19

joey is 3 and martina is 19

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Answer:

At the same  rate 18  carburetors out of 1,050 could be expected to be detective.

Step-by-step explanation:

The number of carburetors tested = 175

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Here, let the defective pieces = m

So, by the Ratio of Proportion,

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8 0
3 years ago
Missing fraction<br> blank + 1/16 = 3/2
skad [1K]

Answer: 1/2

Step-by-step explanation:

Let the missing fraction be x

x + 1/16 = 3/2

Make x the subject by subtracting both sides by 1/16

x = 3/2 - 1/16

x= 24 - 16/16

= 8/16; divide through by a common value of 8

x = 1/2

I hope this helps.

4 0
2 years ago
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Answer:

<em>Felix earns total $594 per week.</em>

Step-by-step explanation:

Felix’s sales are $53000.

So, <u>the amount of sales over $4800 will be</u>:  \$53000-\$4800= \$48200

Felix earns $450 per week and additional 3% of sales over $4800.

So, his additional income = (\$4800\times 0.03)=\$144

Thus, Felix's total income will be:  (\$450+\$144)=\$594

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