3 years ago

What is the measure of x, given that figure ABCD is a rhombus.

Mathematics

1 answer:

dsp733 years ago

5 0

The answer would be d

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Step-by-step explanation:

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3 years ago

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4 years ago

What is the range of the following function, if the domain is {1,3,12}?<br> f(x) = x - 3

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2 years ago

The sum of two integers is -1. The first number plus 3 times the second is 67. What are the two numbers?

Alexandra [31]

Answer:

x=35

y=34

Step-by-step explanation:

x+y=-1

x+3y=67

x=-3y+67

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-2y+67=-1

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3 0

3 years ago

Find the standard deviation for the given sample data. Round your answer to one more decimal place than is present in the origin

Tema [17]

Answer:

s = 19.7

Step-by-step explanation:

First we need to calculate the mean x' of the sample as:

$x'=\frac{55+18+39+20+20+44+69}{7}=37.9$

We sum all the scores and divide them by the number of scores.

Then, the standard deviation s is calculated as:

$s=\sqrt{\frac{(55-37.9)^2+(18-37.9)^2+(39-37.9)^2+(20-37.9)^2+(20-37.9)^2+(44-37.9)^2+(69-37.9)^2}{7-1} }\\ s=19.7$

We square every score less the mean, sum every value, then divide that by the number of scores less 1 and finally, we calculate the square root.

So, the standard deviation of the sample is 19.7

8 0

4 years ago