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3 years ago

HELPPPPPPPPPPPPPPPPPPPP

Mathematics

2 answers:

ahrayia [7]3 years ago

7 0

Answer:

Prisms have two congruent -- or identical -- bases, and pyramids only have one base. The shape of the base on pyramids and prisms can vary, depending on the shape of the overall three-dimensional object. For example, the base could have a square, rectangle, triangle, hexagon, pentagon or octagon shape.

Step-by-step explanation:

skelet666 [1.2K]3 years ago

4 0

Answer:

Alike : POLYGONS

Alike : polyhedrons
Different : a pyramid has only one base.

Different : There are not the same shape

Step-by-step explanation:

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Help!! 30 points!!

erica [24]

Answer:

a. 47.6mph (distance divided by time = speed. divide each rowers distance by their speed, then add them all)

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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

Which of the following sets contains multiples of six?

djverab [1.8K]

Answer:

Step-by-step explanation:

6*2=12

6*3=18..........

5 0

4 years ago

Tell weather the lines for each pair of equations are parallel perpendicular or neither y=-1/5x+6

FinnZ [79.3K]

Answer:

The slopes are neither perpendicular nor parallel.

Step-by-step explanation:

First we are going to find the slope-inercept form from the equation, -2x + 10y = 5.

Solve for y.

-2x + 10y = 5

+2x. = +2x

10y = 2x + 5

$\begin{gathered} \frac{10y}{10} = \frac{2x + 5}{10} \\ y = \frac{1}{5}x + \frac{1}{2} \end{gathered}$

So we now have

$\begin{gathered}y = \frac{1}{5}x + \frac{1}{2} \\ and \\ y = - \frac{1}{5} x + 6 \end{gathered}$

Looking at the equation above, the slopes are neither perpendicular nor parallel.

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3 years ago

Solve for x : x - 3(2 -x) = 4x - (x - 1) and explain please thanks

Hunter-Best [27]

Solving:
$x - 3(2-x) = 4x - (x - 1)$

Delete the first parentheses by the distributive property, with the distributive property, we multiply the '3' first, then resolve it and the second parentheses eliminate by changing the sign:
$x - 6 + 3x = 4x - x + 1$
Now, put the numbers with letter (incognito) to the right and numbers without letter to the left, changing the signal when changing sides.
 $x + 3x - 4x + x = 6 + 1$
$\diagup\!\!\!\!\!4x - \diagup\!\!\!\!\!4x + x = 7$
$\boxed{\boxed{x = 7}}\end{array}}\qquad\quad\checkmark$

Answer:
$\underline{The\:value\:of\:"x"\:is\:7}$

8 0

4 years ago