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Vlad [161]
3 years ago
15

Together, two boys had 43 cents. The first boy spent 5 cents and the second boy spent 13 cents. The first boy’s remaining money

is 2/3
of the second boy’s remaining money. How much did they each have originally?
Mathematics
1 answer:
o-na [289]3 years ago
8 0
Hello kiddio lets figure this out!

Let x = first 

<span>y = second </span>

<span>Then </span>

<span>x - 5 = remainder of first </span>

<span>y - 13 = remainder of second </span>

<span>x - 5 = 2/3(y - 13) </span>

<span>3x - 15 = 2y - 26 </span>

<span>3x - 2y = - 11................(1) </span>

<span>x + y = 43....................(2) </span>

<span>From (2) y = 43 - x..........(3) </span>

<span>Put (3) in (1) </span>

<span>3x - 2(43 - x) = - 11 </span>

<span>3x - 86 + 2x = - 11 </span>

<span>5x = 75 </span>

<span>x = 15 cents </span>

<span>y = 43 - 15 </span>

<span>= 28 cents
</span>
Have  a nice day
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Answer with at least 3-4 sentences. No fake answers lots of points
Rus_ich [418]

Answer:

4

Step-by-step explanation:

Calculation of the discriminant of the polynomial : x⋅2−4⋅x+5

1. Applying the formula to calculate the discriminant Δ=b2−4⋅a⋅c with : a=0, b=−2,c=5

2. Δ=(−2)2−4⋅(0)⋅(5)=4=4

3. The discriminant of the polynomial x⋅2−4⋅x+5 is equal to 4

5 0
3 years ago
Colin and Brian were playing darts. Colin scored 139 Brian scored 53 more than Colin. What was their combined score?
Inga [223]

Answer

Their combined score is 331 points

Explanation

Determine each person's score

Collin score: 139

Brian: 139 + 53 = 192

Add the scores together

139 + 192 = 331

5 0
3 years ago
What is the probability of rolling a number greater than 2 on one roll of a die and a 6 on a second roll of a die?
ch4aika [34]
Explanation:
There are
6
possible outcomes:
{
1
,
2
,
3
,
4
,
5
,
6
}

4
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2
: {3.4.5.6}#
So the probability of a roll greater than
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XXX
=
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6
=

2/3



Mark brainliest please


Hope this helps you
Answer link
8 0
2 years ago
The weatherman predicts a 20% chance of rain on Thursday. If it rains, there is a 10% chance that your roof will leak. (If it do
andrew11 [14]

Answer:

2%

Step-by-step explanation:

Probability of rain, P(R) = 0.2

Probability of leak Given that it rains, P(L|R) = 0.1

Probability of leak Given that it does not rain, P(L|R') = 0

According to Baye's Rule:

P(L) = [P(L|R) * P(R)] + [P(L|R') * P(R')]

P(R') = 1 - P(R) = 1 - 0.2 = 0.8

P(L) = [0.1 * 0.2] + [0 * 0.8]

P(L) = 0.02 + 0

P(L) = 0.02

Hence, probability of a roof leak on Thursday is 0.02 = (0.02 * 100%) = 2%

4 0
3 years ago
[35 Points!] Answer this for me! ill give you brainly! xo :)
n200080 [17]

Answer:

sqrt(2) sqrt(5) sqrt(2) sqrt(5)

Step-by-step explanation:

sqrt(2) sqrt(5) sqrt(2) sqrt(5)

We know sqrt(a) sqrt(b) = sqrt(ab)

sqrt(2*2) sqrt(5*5)

sqrt(4) sqrt(25)

2 * 5

10

This is a rational number

8 0
3 years ago
Read 2 more answers
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