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3 years ago

Calculate the standard deviation of the data set below ( 7, 9, 10, 11, 13)

Mathematics

1 answer:

JulijaS [17]3 years ago

7 0

The standard deviation is 2.2

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Somebody please help me with my geometry

RSB [31]

Answer:

AB + BC = AC

BC = AC - AB

5x + 6 = 37 - (2 x + 3) = 37 -2 x - 3 = 34 - 2 x

7 x = 34 - 6 = 28

x = 4

BC = 5 x + 6 = 5 * 4 + 6 = 26

Check:

AB = 2 x + 3 = 2 * 4 + 3 = 11

AB + BC = 26 + 11 = 37

3 0

3 years ago

Allison has a 1/2 cup of yogurt for making fruit parfait recipe 1/8 Cup of yogurt. How many parfait can she make

Tems11 [23]

Answer:

4 parfaits

Step-by-step explanation:

Given that,

Allison has a 1/2 cup of yogurt for making fruit parfait recipe 1/8 Cup of yogurt.

We need to find how many parfait can she make.

Let she can make x parfait.

$x=\dfrac{\dfrac{1}{2}}{\dfrac{1}{8}}\\\\=\dfrac{1}{2}\times \dfrac{8}{1}\\\\=4$

Hence, she can make 4 parfaits.

3 0

3 years ago

3x - 4 = -31 What is x?

SSSSS [86.1K]

3x-4=-31
+4 +4
3x=27
X=9

Hope this helps

5 0

3 years ago

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A river flows due south at 4 mi/h. A swimmer attempting to cross the river heads due east swimming at 2 mi/h relative to the wat

Inessa05 [86]

Answer:

$\overrightarrow{V_{S,G}}=2\widehat{i}-4\widehat{j} mi/h$

Step-by-step explanation:

velocity of river with respect to ground = 4 mi/h south

$\overrightarrow{V_{R,G}}=4(\widehat{-j})$

Velocity of swimmer with respect to river = 2 mi/h east

$\overrightarrow{V_{S,R}}=2(\widehat{i})$

According to the formula of relative velocity

$\overrightarrow{V_{S,R}}=\overrightarrow{V_{S,G}}-\overrightarrow{V_{R,G}}$

$2\widehat{i}=\overrightarrow{V_{S,G}}+4\widehat{j}$

Where, V(S,G) be the velocity of swimmer with respect to ground, it is true velocity of swimmer.

$\overrightarrow{V_{S,G}}=2\widehat{i}-4\widehat{j} mi/h$

5 0

3 years ago

Which equation represents the graph of the linear function?

nirvana33 [79]

The y intercept in this graph is (0,1) ad the only equations that fit this are a and c.
To figure out whether it is a or c, find the slope. The line of the equation is going up, so he slope is positive. Equation c has the positive slope.
EQUATION C

5 0

3 years ago

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