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kotykmax [81]
3 years ago
7

Can i also know the working out for this question? thanks in advance!​

Mathematics
1 answer:
shepuryov [24]3 years ago
7 0
4x-1=18
4x=18+1
4x=19
x=19/4
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Need hep now will make brainliest
AfilCa [17]
Hi!
1. -25
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8 0
3 years ago
Read 2 more answers
What is the answer to this question? Please Help.
Arte-miy333 [17]

Answer:

x = 2, y= 3

Step-by-step explanation:

y = -2x+7

y = 5x-7

Since the equations are both equal to y, set them equal to each other

-2x+7 = 5x-7

Add 2x to each side

-2x+7 +2x= 5x+2x-7

7 = 7x -7

Add 7 to each side

7+7 = 7x

14 = 7x

Divide by 7

14/7 = 7x/7

2 = x

Now find y

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3 years ago
Parameter and Statistic. In a Harris Interactive survey of 2276 adults in the United States, it was found that 33% of those surv
ankoles [38]

Answer:

Our population of interest represent all the adults in United states who never travel using commercial airlines.

The sample on this case represent the people surveyed in United States who never travel using commercial airlines.

For this case the value obtained \hat p =0.33 represent a statistic since is a value who represent the sample not the population. Our population parameter is not known and is given by p

Step-by-step explanation:

A statistic is a "characteristic of a sample". And the statistic allows "estimate the value of a population parameter".

A parameter is a value who represent the population of interest.  

For this case we have a sample size of size n = 2276

The proportion estimated \hat p of people that nevel travel using commercial airlines was:

\hat p = \frac{x}{2276}=0.33 or 33%

Our population of interest represent all the adults in United states who never travel using commercial airlines.

The sample on this case represent the people surveyed in United States who never travel using commercial airlines.

For this case the value obtained \hat p =0.33 represent a statistic since is a value who represent the sample not the population. Our population parameter is not known and is given by p

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3 years ago
What is y when x = 60?
ArbitrLikvidat [17]

Answer:

300

Step-by-step explanation:

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3 years ago
John is twice as old as Mary. The sum of their ages is 21. How old is Mary?
Nitella [24]

Answer:

Mary is 7

Because 14+7 =21

So j+m=21

J - 2m= 0

8 0
3 years ago
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