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2 years ago

Who knows how to do this please i need help I don’t understand

Mathematics

1 answer:

ArbitrLikvidat [17]2 years ago

3 0

Answer:

9,4,0,1

Step-by-step explanation:

They give you different values for the X so all you have to do is plug in the X to the different equations

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Please tell me the answer as simple as you can

dalvyx [7]

Answer:

9 lol

Step-by-step explanation:

sun of 4 and 5 is 9

difference between 8 and 7 is 9

multiply 9 by 1

5 0

2 years ago

Create an equation modeling the scenario. Use the equation to solve for the missing number. In your final answer, include the eq

Svetradugi [14.3K]

I think it’s 2(x+7)=3x

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2 years ago

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The average value of two positive numbers is 30% less than one of the two numbers. By which percentage is average value bigger t

Viefleur [7K]

Answer:

75% bigger

Step-by-step explanation:

Let the first number be x and the second be y.

So:

$Average = \frac{x + y}{2}$

And:

$Average = (1 - 30\%) * x$ -----30% less than x

Substitute $Average = (1 - 30\%) * x$ in $Average = \frac{x + y}{2}$

$\frac{x + y}{2} = (1 - 30\%) * x$

$\frac{x + y}{2} = (1 - 0.30) * x$

$\frac{x + y}{2} = 0.70 * x$

$\frac{x + y}{2} = 0.70x$

Cross multiply

$x + y = 0.70x * 2$

$x + y = 1.40x$

Collect like terms

$1.40x - x = y$

$0.40x = y$

Make x the subject

$x = \frac{y}{0.40}$

$x = 2.50y$

So, the average is:

$Average = (1 - 30\%) * x$

$Average = (1 - 30\%) * 2.50y$

$Average =0.70 * 2.50y$

$Average =1.75y$

Rewrite as:

$Average =(1 + 0.75)y$

Express as percentage

$Average =(1 + 75\%)y$

This means that the average is 75% bigger than the second number

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2 years ago

The angle are supplementary.find the missing angle measure

olga55 [171]

U had to take a pic of the work so we could see it

6 0

2 years ago

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A random sample of 10 subjects have weights with a standard deviation of 9 8753 kg What is the variance of their weights? Be sur

hammer [34]

Answer: The variance of their weights = 9,752,155,009 kg.

Step-by-step explanation:

The variance is the square of the standard deviation . it measures the spread between data values in a data set.

So if standard deviation of 10 subjects = 98753 kg

Then, variance = $(9 8753 )^2\ kg=9,752,155,009\ kg$

Hence, the variance of their weights = 9,752,155,009 kg.

8 0

2 years ago