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4 years ago

Help In Math Please!!

Mathematics

2 answers:

Vitek1552 [10]4 years ago

7 0

Answer:

The other answer for USA TP is 26.25

Step-by-step explanation:

The mean is the average of the numbers.

29.8 + 29.6 + 28.9 + 27.1 + 26.4 + 25.5 + 24.5 + 24.0 + 23.8 + 22.9

= 26.25

Usimov [2.4K]4 years ago

3 0

To calculate the interquartile range of a dataset, we first arrange the dataset in order:

Since the given dataset is already arranged in order.

We obtain the Q1 and the Q3 data values.

The Q1 value is the value for which 25% of the datavalues lie below it. For the given dataset, the Q1 value is 24.

Similarly, the Q3 value is the value for which 25% of the datavalues lie above it. For the given dataset, the Q1 value is 28.9.

The interquartile range is given by

IQR = Q3 - Q1 = 28.9 - 24 = 4.9

Therefore, <span>the interquartile range (IQR) of the data set is 4.9.</span>

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Which expression could be substituted for y in the second equation to find the value of x?

EastWind [94]

value of x is $x=-\frac{29}{4}$ and value of y is $y=-\frac{9}{2}$

Step-by-step explanation:

We need to find Which expression could be substituted for y in the second equation to find the value of x

The given equations are:

$2x-y=-10\,\,\,(1)2x - 3y= -1\,\,\,\,(2)$

For putting value of y in second equation, we will find from equation 1

From equation 1:

$2x-y=-10\\-y=-10-2x\\y=10+2x$

Putting value of y i.e y=10+2x in equation (2) to find value of x

$2x-3y=-1\\2x-3(10+2x)=-1\\2x-30-6x=-1\\-4x=-1+30\\-4x=29\\x=\frac{29}{-4}\\x=-\frac{29}{4}$

So, now finding value of y by putting value of x= -29/4 in eq(1)

$2x-y=-10\\2(-\frac{29}{4})-y=-10\\-\frac{29}{2}-y=-10\\-y=-10+\frac{29}{2}\\ -y=\frac{-20+29}{2}\\ -y=\frac{9}{2}\\ y=-\frac{9}{2}$

So, value of x is $x=-\frac{29}{4}$ and value of y is $y=-\frac{9}{2}$

Keywords: System of equations

Learn more about System of equations at:

#learnwithBrainly

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