Answer:
wha-
Step-by-step explanation:
Answer:
<em>a:b:c=8:12:15</em>
Step-by-step explanation:
<u>Combined Ratio</u>
We are given the ratios:
a:b=2:3
b:c=4:5
The combined ratio a:b:c will include all three variables in one single expression.
Before finding it, we must have a common number for the common variable (b). Since b is 3 in the first ratio and 4 in the second ratio, we must equate both by finding the LCM of 3 and 4=12, thus both ratios will be amplified as follows:
a:b=2:3=(2*4):(3*4)=8:12
b:c=4:5=(4*3):(5*3)=12:15
Now there is a common factor in both ratios, we can combine them removing the common factor:
a:b:c=8:12:15
The number of times Ken visits, given the £3.6 pool charge, and 1/3 savings per visit is 5 times.
<h3>Which method can be used to find the number of times Ken visits the pool to get back his £5?</h3>
The entry fee = £3.60
Amount saved on entry fee by having a membership card = 1/3 of the entry fee
Amount Ken spends on the membership card and the reduced entry fee = £5
Therefore;
Reduced entry fee = £3.60×(1 - 1/3) = £2.4
Amount saved per visit = £3.6 - £2.4 = £1.2
The number of visits, <em>n</em>, before he gets back his £5 is therefore;
- n = £5/(£1.2/visit) ≈ 4.17 visits
Ken has to visit the swimming pool more than 4 times to get his £5 back.
Rounding to the next larger whole, therefore;
- The number of visits, n, before he gets back his £5 is 5 visits
Learn more about fractions here:
brainly.com/question/15451726
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To multiply binomials, use the FOIL method. You start by multiplying the first terms in each binomial, 3n * n. The F stands for first.
Then you multiply the outside terms, 3n * 3. The O stands for outsides.
Then you multiply the inside terms, 2 * n. The I stands for insides
Then you multiply the last terms, 2 * 3. The L stands for last
Now solve for each, place them in the same equation, and combine like terms.
3n * n = 3n²
3n * 3 = 9n
2 * n = 2n
2 * 3 = 6
Your equation becomes 3n² + 9n + 2n + 6.
The 9n and 2n can combine together because they are like terms. Your answer becomes:
3n² + 11n + 6
23.29 because all those numbers add up to -3.29 so add 23.29 and u have 20
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