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lord [1]
3 years ago
12

Solve: 4x-4=2(×-1)-4y+2y. show some work please:))​

Mathematics
1 answer:
Papessa [141]3 years ago
7 0

your answer is x = -7+1/2

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Suppose you drive an average of 13,000 miles per​ year, and your car gets 26 miles per gallon. Suppose gasoline costs ​$3.60 a g
kow [346]
I'm assuming you're trying to find out how much you'll spend annually on gas: first you would divide the total miles driven in a year (13,000) by your car's mpg (26) giving you a quotient of 500 (the amount of times you'll have to fill up your tank) from here you will need to multiply 500 times the cost of gas ($3.60) giving you a product of $1,800 spent on gas annually.
8 0
3 years ago
Using data from a study, we find a significant difference in the proportion of fruit flies surviving after 13 days between those
mestny [16]

The hypothesis shows that we have evidence that the proportion surviving after eating organic is higher.

<h3>How to illustrate the information?</h3>

The following can be deduced from the information:

x1 = 275

x2 = 170

n1 = 500

n2 = 500

The sample proportion will be:

p1 = 275/500 = 0.55

p2 = 170/500 = 0.34

The pooled proportion will be:

= (275 + 170)/(500 + 500)

= 0.44

The test statistic is 6.681. It should be noted that the test statistics is a number that's calculated by a statistical test. It shows how the observed data are far from the null hypothesis.

The p value in this scenario is extremely small. The p value is a measurement used to validate a hypothesis against the observed data. Therefore, we have to reject the null hypothesis.

In this case, the hypothesis shows that we have evidence that the proportion surviving after eating organic is higher.

Learn more about hypothesis on:

brainly.com/question/15980493

#SPJ1

8 0
2 years ago
What is the slope of the line passing through the points (−3, 4) and (2, −1) ?
Alex73 [517]

d is is the defenit answer

4 0
4 years ago
Read 2 more answers
Population of fruit flies has a mean life span of 46 days with a standard deviation of 6.2 days. If a sample of 30 fruit flies i
icang [17]
Idk sorry I would answer if I did but I need points to ask a question
7 0
3 years ago
A taco stand sells tacos for $3.25 each. The stands expenses for the day are $210. Define your variables and write an inequality
Julli [10]
Given:

Let P= profit
let n= no. of tacos sold per day

Sol'n:

P= 3.25n-210
the profit needs to be positive, thus

3.25n>210

n>210/3.25

n> 64.615

they can only sell whole tacos, therefore they must sell at least 65 tacos to make a profit and that profit is:

P=3.25n-210

P=3.25*65 - 210

P= 211.25 -210

P= 1.25

$1.25 profit
3 0
3 years ago
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