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miss Akunina [59]
3 years ago
10

Last week, Chen bought ​ 8 1/2 ​ gallons of gas at $2.30 per gallon. This week, he bought ​ 4 3/10 ​ gallons of gas at $2.70 per

gallon.
What was his total cost?
Mathematics
2 answers:
tamaranim1 [39]3 years ago
7 0

Answer:

31.16

Step-by-step explanation:

kompoz [17]3 years ago
5 0
I got $31.25 it might be wrong i used a calculator.

You might be interested in
What is an algebraic expression for, the sum of s and t ?​
denis-greek [22]

Answer:

\Huge \boxed{s+t}

Step-by-step explanation:

The sum is the result obtained from adding two or more values together.

The sum of <em>s</em> and <em>t</em> is the result obtained from adding <em>s</em> and <em>t</em> together.

<em>s </em>+<em> t</em>

4 0
3 years ago
Students took a typing test. The number of words per minute students could type are listed below. 40, 47, 25, 32, 48, 55, 33, 56
const2013 [10]

Answer:

50

Step-by-step explanation:

The median number is known as the middles number

The first step is to rearrange the set of numbers starting from the lowest

25, 32, 32, 32, 33, 40, 47, 47, 48, 55, 56

Hence the middle number is 50

8 0
3 years ago
If the p-value is smaller than the level of significance, what conclusion should we reach?
marshall27 [118]

If the p-value is smaller than the level of significance, then it indicates strong evidence against the null hypothesis, as there is less than a 5% probability the null hypothesis is correct.

In this question,

A p-value is a probability, calculated after running a statistical test on data and it lies between 0 and 1. The p-value only tells you how likely the data you have observed is occurred under the null hypothesis.

One of the most commonly used p-value is 0.05. If the value is greater than 0.05, the null hypothesis is considered to be true. If the calculated p-value turns out to be less than 0.05, the null hypothesis is considered to be false, or nullified (hence the name null hypothesis).

A small p-value (< 0.05 in general) means that the observed results are unusual, assuming that they were due to chance only. Now, the smaller the p-value, the stronger the evidence that should reject the null hypothesis.

Hence we can conclude that if the p-value is smaller than the level of significance, then it indicates strong evidence against the null hypothesis, as there is less than a 5% probability the null hypothesis is correct.

Learn more about p-value here

brainly.com/question/15855760

#SPJ4

7 0
1 year ago
Imagine a population of birds with an initial size of 100, a per-capita birth rate of 2, and a per-capita death rate of 1 per ye
Soloha48 [4]

Answer:

3200

Step-by-step explanation:

Given that:

The initial population of birds N_0 = 100

The time duration t = 5 years

Growth rate (r) = (Birth - Death) rate

= 2 - 1

= 1 / year

∴

using the discrete-time form:

N_t = N_o (1 + r )^t

N_t = 100 (1 + 1 )^5

N_t = 100 (2 )^5

N_t = 100 \times 32

N_t = 3200

8 0
2 years ago
What is the supplementary angel of 60
AURORKA [14]
A line is 180°, so the supplementary angel makes up the difference between. 180 - 60 = 120°
3 0
3 years ago
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