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likoan [24]
3 years ago
7

Jake was 4 times as old as Kelly 5 years ago. Their total age is 60 now. How much older is Jake than Kelly?​

Mathematics
1 answer:
tatyana61 [14]3 years ago
8 0

Answer:

5 years ago

Let Kelly's age be x

Jake's age is 4x

5 years later

Kelly's age is x + 5

Jake's age is 4x+5

The sum of both their ages is 60. The equation will be

x + 5 + 4x + 5 = 60

5x + 10 = 60

5x = 60 - 10

x = 50/5 = 10

So Kelly is (10 + 5) 15 years old.

Jake is (4*10 + 5) = 45 years old

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3 years ago
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An automobile manufacturer is concerned about a possible recall of its best-selling four-door sedan. If there were a recall, the
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0.27

Step-by-step explanation:

Suppose A is the event of defect in the brake system and B is the event of defect in the fuel system,

We have given,

P(A) = 0.25,

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P(A∩B) = 0.15 ( the probability of defects in both systems simultaneously is 0.15 ),

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P(A∪B) = P(A) + P(B) - P(A∩B)

= 0.25 + 0.17 - 0.15

= 0.27

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8 0
3 years ago
Ralph bought some oranges. The weight of the oranges was 2.5 kilograms. How many grams is this?
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Answer:

2500 grams

Step-by-step explanation:

convert 2.5 kilograms to grams by multiplying by 1000

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2 years ago
Solve <br><br>(2)^a−2+(2)^3−a=3​
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Step-by-step explanation:

5 0
3 years ago
Together, Dante and Mia have a total of 350 pennies in their piggy banks. After Dante lost ½ of his pennies and Mia lost ⅓ of he
natta225 [31]

Answer:

Altogether they lost 150 pennies.

Step-by-step explanation:

X = Dante's pennies

Y = Mia's pennies

X + Y = 350                                       1/2 X = 2/3 Y

                                                                X = 4/3 Y

4/3 Y + Y = 350

7/3 Y = 350

Y = 350 * 3/7

Y = 50 * 3

Y = 150

X + 150 = 350

X = 200

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                                                       100 .      =   100

1/2 * 200 = 100 -> Dante lost 100 pennies

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Altogether they lost 150 pennies.

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3 years ago
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