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3 years ago

PLZ HELP

Mathematics

1 answer:

SCORPION-xisa [38]3 years ago

8 0

Answer:

(y + 14)(y - 14)

Step-by-step explanation:

A difference of squares has the general form

a³ - b² and factors as

(a + b)(a - b)

Given

y² - 196

y² = (y)² ⇒ a = y and 196 = 14² ⇒ b = 14

y² - 196

= y² - 14² = (y + 14)(y - 14) ← difference of squares

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PLSSSS HELPPP find the surface area and volume of the prism ILL GIVE BRAINLIESTT

Lady bird [3.3K]

Answer: 94 and 60, 96 and 42

Step-by-step explanation:

1. For surface area, you need to find the area the sides and base.

Base: 3*4= 12

Side 1: 4*5= 20

Side 2: 3*5= 15

Multiply each by 2.

12*2= 24

20*2= 40

15*2= 30

Add them up.

30+40+24= 94 is the surface area.

For the volume, you multiply each given number.

3*4*5

length * width * height = volume

60 is the volume.

2. For surface area, you need to find the area the sides and base. This is a triangular prisim so the formula is differrent.

Base: 3*7= 21

Side 1: (area of a triangle is 1/2bh) 3*4= 12 / 2= 6

Side 2: (area of a triangle is 1/2bh) 3*4= 12/2= 6

Side 3 (the back): 4*7= 28

Side 4 (the shaded): 5*7= 35

Add them up. This isn't a rectangular prisim so we aren't multiplying the found areas again, in the triangula rpriism we already found ALL areas.

21+6+6+28+35

= 96 is the surface area.

For the volume, you multiply each given number. You follow for triangles,

1/2 BAH

7*4*3=84

84/2

= 42 is the volume.

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Jlenok [28]

Answer: First answer goes with second graph

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Step-by-step explanation:

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Veronika [31]

Answer:

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Step-by-step explanation:

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Answer:

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