Help me please I'm lost

Mathematics

1 answer:

natita [175]4 years ago

8 0

1. Figure Name: Rectangular Prism
    Baces:Rectangle
    Faces:6
    Edges:12
    Vertices:8

2.Figure Name: Pentagonal Pyramid
   Baces: Pentagon
   Faces:6
   Edges:10
   Vertices:6

3.Figure Name: Pentagonal Pyramid
   Baces: Pentagon
   Faces: 7
   Edges: 15
   Vertices:10

4.Figure Name: Cone
   Baces: Circle
   Faces: 1
   Edges: 0
   Vertices: 1

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According to a study done by De Anza students, the height for Asian adult males is normally distributed with an average of 66 in

Crazy boy [7]

Answer:

0.54035

Step-by-step explanation:

Given that :

Mean, m = 66 inches

Standard deviation, s = 2.5 inches

P(65 < X < 69)

P(X < 69) - P(X < 65)

((69 - 66) / 2.5) - ((65 - 66) / 2.5)

P(Z <(3/ 2.5)) - P(Z <(-1 / 2.5))

P(Z < 1.2) - P(Z < - 0.4)

0.88493 - 0.34458

= 0.54035

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3 years ago

-2x-5y=10 find the slope of the line descibes by each equation

Vlad [161]

The goal is to get y by itself so that the equation can be in slope intercept (y = mx + b) form where m is the slope.

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3 years ago

Which is true about the completely simplified difference of the polynomials a3b 9a2b2 − 4ab5 and a3b − 3a2b2 ab5?.

PtichkaEL [24]

The simplified difference of the polynomials (a³b+9a²b²-4ab⁵) and (a³b-3a²b²+ab⁵) is (12a²b²-5ab⁵).

<h3>What are Like terms?</h3>

Like terms are those terms that are having the same variables, also the variables are of the same order as well.

for example, 25x and 5x are like terms; 30xy and 7xy are like terms, 9x³ and 4x² are not like terms, etc.

Let's simplify the two of the given polynomials, therefore, find the difference between the two given polynomials.

$a^3b+9a^2b^2 - 4ab^5 - (a^3b - 3a^2b^2+ab^5)\\\\= a^3b+9a^2b^2 - 4ab^5 - a^3b + 3a^2b^2-ab^5\\\\\text{Bring Like terms together}\\\\=a^3b - a^3b+9a^2b^2+3a^2b^2 -4ab^5-ab^5\\\\= 12a^2b^2-5ab^5$