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nasty-shy [4]
3 years ago
9

Kenny bought a few 2-litre bottles of detergent. Sue bought a few 3-litre bottles of detergent. The average amount of detergent

both of them had was 5y litres. Kenny and Sue bought the same number of bottles of detergent. How many bottles of detergent did each of them buy?
Mathematics
1 answer:
exis [7]3 years ago
4 0
They both bought 1 bottle each.

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3. Jen’s parents buy a tablet for her to use in school. Of the $1500 cost, her parents expect her to pay back $1000 one year lat
NNADVOKAT [17]

Answer:

<h3>33.3%</h3>

Step-by-step explanation:

Using the formula for calculating simple interest as shown;

Simple Interest = Principal * Rate *Time/100

Principal = Cost of tablet = $1500

Interest after one year  =  $1500-$1000 = $500

Time = 1year

Substituting this values into the formula;

500 = 1500*rate*1/100\\Cross\ multiplying\\50,000 = 1500 * rate\\Rate = 50,000/1500\\Rate = 33.3%

The interest rate that her parents assumed is 33.3%

4 0
3 years ago
What is 4a+7b+3a-2b+2a;a=-5 and b=3
Dima020 [189]
<span>4a+7b+3a-2b+2a
Substitute all of the variables for the numbers given
4(-5)+7(3)+3(-5)-2(3)+2(-5)
Multiply all of the variables by their coefficient
-20+21-15-6-10
Combine like terms
Final Answer: -30
</span>
4 0
3 years ago
There are 3 urns A, B and C each containing a total of 10 marbles of which 2, 7 and 4 respectively are red. One of the urns is s
sleet_krkn [62]
<h3>Answer:  7/13</h3>

======================================================

Explanation:

We know that the marble selected is red, so we don't need to focus on the other colors.

7 red marbles are in urn B out of 2+7+4 = 13 total red marbles.

The probability the red marble came from urn B is therefore 7/13

5 0
3 years ago
Please help asap
natima [27]

See the attached picture for the answers.

5 0
3 years ago
Write an expression that can be used to check the quotient of 646 ÷ 3
S_A_V [24]
3 times x equals to 646
3x=646

5 0
3 years ago
Read 2 more answers
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