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Daniel [21]
3 years ago
7

Factor completely please

Mathematics
1 answer:
Sedbober [7]3 years ago
3 0

Answer:

Step-by-step explanation:

hello :

1-x² = (1-x)(1+x) by identity : a²-b²=(a-b)(a+b)

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If the original quantity is 8 and the new quantity is 6, what is the percent decrease?
gayaneshka [121]
This is a 25% decrease as 2 is .25 of 8 and 8-2=6
4 0
4 years ago
CAN SOMEONE HELP ME WITH WIYH THIS ?????
fomenos

Answer:

x = 14

Angle B = 121°

Angle C is 59°

Step-by-step explanation:

First we'll find x, then we'll find Angle B (by substituting in x), then we'll find Angle C (bc Angle B and C are supplementary--that us, they add up to 180°)

10x-19 = 7x+23 subtract 7x

3x-19 = 23 add 19

3x = 42 divide by 3

x = 14

Angle B is 10x-19, and if x=14, then its 10(14)-19

Angle B is 140-19

which is 121°

Angle B = 121°

Angle B and Angle C add up to 180°

121° + c = 180°

c = 180-121

Angle C is 59°

8 0
3 years ago
Find the equation of the line.<br> Through (-11, -1); perpendicular to y=15.
Harrizon [31]

Answer:

x = - 11

Step-by-step explanation:

y = 15 is a horizontal line parallel to the x- axis

a perpendicular line must therefore be a vertical line parallel to the y- axis with equation

x = c

where c is the value of the x- coordinates the line passes through.

the line passes through (- 11, - 1 ) with x- coordinate of - 11 , then

x = - 11 ← equation of perpendicular line

7 0
2 years ago
Read 2 more answers
Find the Surface Area of the cone.
Snezhnost [94]

Answer:

\sf \huge{\boxed{\sf area = 653.1 cm^2}}

<u>Explanation</u>:

\sf \boxed{\sf area \ of  \ cone=\pi r^2 +\pi rl }

<u>Given:</u>

  • radius: 8 m
  • slant height: 18 m

<u>using this formula:</u>

\hookrightarrow \sf \pi r^2 + \pi rl

\hookrightarrow \sf (3.14)(8)^2 +(3.14)(8)(18)

\hookrightarrow \sf 653.1 cm^2

7 0
2 years ago
What is the area of a rectangle with length 112 foot and width 34 foot?
Nastasia [14]

Answer:

<u>3808ft²</u>

Step-by-step explanation:

Formula: A=L×W

<u>A=</u> area

<u>L=</u>  length

<u>W=</u> width

A= 112 × 34= <u>3808ft²</u>

8 0
3 years ago
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