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mrs_skeptik [129]
2 years ago
13

Shane purchased a television at a 20% discount. If the sale price is $375.00, what is the original price ?​

Mathematics
1 answer:
Sveta_85 [38]2 years ago
8 0

the answer is going to be 450. all you have to do is add 375+20%

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the arithmetic sequence ai is defined by the formula: a1 = -53 ai = ai-1 + 6 find the sum of the first 880 terms in the sequence
maxonik [38]

Answer:

The sum of the first 880 terms in the sequence is 2,273,920.

Step-by-step explanation:

Arithmetic sequence:

The difference between consecutive terms is always the same, called common difference, and the nth term is given by:

a_{n} = a_0 + (n-1)d

In which d is the common difference.

Sum of the first n terms:

The sum of the first n terms of an arithmetic sequence is given by:

S_{n} = \frac{n(a_1+a_n)}{2}

ai = ai-1 + 6

This means that d = 6

In this question:

Sum of the first 800 terms, so n = 800

First term is -53, so a_1 = -53

The 880th term is:

a_{880} = -53 + (880-1)*6 = 5221

Sum

S_{n} = \frac{880(-53+5221)}{2} = 440(-53+5221) = 2273920

The sum of the first 880 terms in the sequence is 2,273,920.

4 0
3 years ago
A car travels 322 miles on 11.5 gallons of gas. What is the cars miles per gallon
kolbaska11 [484]
28 miles per gallon. To find miles per gallon you do miles divided by gallons which in this case is 322/11.5=28.

If you need any more help feel free to message me.
6 0
3 years ago
Someone please help:)
Mama L [17]
The ratio to that problem is 6
7 0
3 years ago
Roland was driving to campus but realized that his car is out of gas. He started driving around Syracuse looking for a gas stati
tester [92]

Answer:

Roland is right, he can be 95% sure that average gas prices have gone up since the same time last year.

Step-by-step explanation:

Let μ be average gas price around Syracuse.

Then hypotheses are:

H_{0}: μ = $2.68

H_{a}: μ > $2.68

Then test statistic can be calculated as:

z=\frac{X-M}{\frac{s}{\sqrt{N} } } where

  • X  is the Roland's calculated average gas prices of 50 gas stations ($2.74)
  • M is the average average gas prices in the entire of Syracuse last year
  • s is the standard deviation ($0.11)
  • N is the sample size(50)

Then z=\frac{2.74-2.68}{\frac{0.11}{\sqrt{50} } } ≈ 3.86

Since P-value of test statistic ≈ 0.00006 <0.05  (significance level), we can reject the null hypothesis.

7 0
3 years ago
The sum of 12 and 30 multiplied by 6
blagie [28]

Answer:

Step-by-step explanation:

12*30=360

360/6=60

3 0
3 years ago
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