Answer:
<em>a=$10</em>
<em>c=$3</em>
Step-by-step explanation:
Step one:
given data
let adults tickets be a
and child tickets be c
so
Roy's purchase
6a+2c=66------1
Elisa's purchase
5a+4c=62-------2
Hence, the system of equations
<em>6a+2c=66------1</em>
<em>5a+4c=62-------2</em>
<em>solving simultaneously</em>
<em>6a+2c=66------1 x2</em>
<em>5a+4c=62-------2 x1</em>
<em />
<em> 12a+4c=132</em>
<em> -5a+4c=62</em>
<em> 7a=70</em>
<em>divide both sides by 7</em>
<em>a=$10</em>
<em />
<em>put a=70 in 1</em>
<em>6(10)+2c=66------1</em>
<em>60+2c=66</em>
<em>2c=66-60</em>
<em>2c=6</em>
<em>c=$3</em>
580-25% is 435 so if yu need help you just inbox me ok and answer back to this txt
Based on the balance at the start of May and the purchases and payments made by Ruth, the balance at the beginning of April was b. $797.22.
<h3>What was the beginning balance in April?</h3><h3 />
First find the monthly rate:
= 10.91% / 12
= 0.909%
The beginning balance is x:
May balance = (Beginning balance x (1 + monthy rate) + Purchases - Payments
847.64 = x × 1.00909 + 88.34 - 45.17
1.00909x = 847.64 - 88.34 + 45.17
x = $797.22
Find out more on credit card balances at brainly.com/question/6872962.
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Step-by-step explanation:
- The random variable (x) here would be a randomly selected student from the college that is left-handed.
- The population parameter would be 11% of America's total population. The total population as of 2019 is believed to be 328.2 million, and 11% of that figure is about 36.1 million (thirty-six million one hundred thousand).
- Hypotheses: Remember, the <u>null hypothesis</u> usually reflects the held view of the researcher, and since we are told the college wants to know if the data provide enough evidence to show that students at this college have a different percentage of left-handers than the general American population. It could read;<em> There is a statistically significant difference in the percentage of left-handers in the college than the American population. </em>While the <u>alternate hypothesis</u> could read; <em>There is </em><u><em>no</em></u><em> statistically significant difference in the percentage of left-handers in the college than the American population.</em>
- The Type I error implies rejecting the null hypothesis when it is actually true. That is: <u>Rejecting that the % of all students from that college that are left-handed is 11 % when the % is really 11 %.</u>
- The Type II error implies accepting the null hypothesis when it is actually false. That is: <u>Failing to reject that the % of all students from that college that are left-handed is 11 % when the % is actually different.</u>
Answer: the weight of each bags are 1.85kg,
1.85kg and 3.05 kg
Step-by-step explanation:
Total weight of the three bags is
6 3/4 kg. Converting to decimal, it becomes 6.75
kg.
Two of them have the same weight. Let X
represent the bags of equal weight. Their total
weight would be 2x. The third bag is heavier
than each of the bags of equal weight by 1 1/5
kg. Converting to decimal, it becomes 1.2kg. It
means that the weight of the third bag would be
x + 1.2
Therefore, for the three bags,
2x + × + 1.2 = 6.75
3x = 6.75 - 1.2 = 5.55
x=5.55/3=1.85
Weight of the third bag is
1.85+1.2=3.05kg