What is the factored form of the following expression? x2 – x – 42

Answers

Answer 1

Answer: (X-7)(X+6) is factored form expression

Answer 2

Answer: The simplified form is 2x-42

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You can drive 80 miles on 1/5 of a tank of gas in 3 hours what is the answer?
There were 20 apples in the bag. Rachel used 2/5 of the apples for a pie. Hermother used 1/2 of the apples for apple crisp. How many apples are left inthe bag?
Convert each measure to radians and state answer in terms of pi. a.) 40(degrees) b.) -570(degrees)

What is sin 7pie/4the answer does not have pie in it

and it is not a decimal

Answers

Hello,
sin(-45°)=-√2 /2 =-0,7071067....

What is 8.2p-33.4=1.7-3.5p

Answers

$8.2p-33.4=1.7-3.5p$

$8.2p=1.7-3.5p+33.4$    $Add \ 33.4 \ to \ both \ sides$

$8.2p=-3.5p+35.1$

$8.2p+3.5p=35.1$    $Add \ 3.5p \ to \ both \ sides$

$11.7p=35.1$

$(11.7p)/(11.7) = (35.1)/(11.7p)$    $Divide \ both \ sides \ by \ 11.7$

$p=3$    $Solution$

p=3
First you add 33.4 to both sides. Then add 3.5p to both sides. Then divide 35.1 by 11.7 and you get 3.

Calvin and Melvin are two of Santa's elves. The number of toys they build is given by 11c + 9m where c is the number of candy canes Calvin eats for breakfast and m is the number of candy canes Melvin eats for breakfast.How many toys do they build when Calvin eats 5 candy canes and Melvin eats 3 candy canes for breakfast? :)

Answers

just substitute c=5 Calvin's candy canes and m=3 Melvin's candy canes

11c + 8m = 11*5 + 8*3 = 55 + 24 = 79
so they built 79 toys i hope it helps

Use cramers rule to solve 4x+3y=4 -3x-y=7 show your work

Answers

$\left\{\begin{array}{ccc}4x+3y=4\n-3x-y=7\end{array}\right\n\nD= \left|\begin{array}{ccc}4&3\n-3&-1\end{array}\right|=(4)(-1)-(-3)(3)=-4+9=5\n\nD_x=\left|\begin{array}{ccc}4&3\n7&-1\end{array}\right|=(4)(-1)-(7)(3)=-4-21=-25\n\nD_y=\left|\begin{array}{ccc}4&4\n-3&7\end{array}\right|=(4)(7)-(-3)(4)=28+12=40\n\nx=(D_x)/(D)\Rightarrow x=(-25)/(5)=-5\n\ny=(D_y)/(D)\Rightarrow y=(40)/(5)=8$

The diameter of a quarter is about 2.4 centimeters. a. What is the circumference of a quarter ? (Use 3.14 for pie) b. What is the ratio of the radius of the quarter to the diameter of the quarter?

Answers

radius=1.2
circuimsantece=2*3.14*1.2=76.36
circuimsantece of quarter=76,36/4=19.09
ratio=1/2

Factor the left hand side of the equation into two or more factors 16x^4-121x^2=0

To the fourth power^4
Squared^2

Cimpletly lost help me figure this out please

Answers

  16x⁴ - 121x² = 0
  x²(16x²) - x²(121) = 0
  x²(16x² - 121) = 0
x²(16x² + 44x - 44x - 121) = 0
x²(4x(4x) + 4x(11) - 11(4x) - 11(11)) = 0
  x²(4x(4x + 11) - 11(4x + 11)) = 0
  x²(4x - 11)(4x + 11) = 0
  x² = 0 or 4x - 11 = 0 or 4x + 11 = 0
√(x²) = √(0) + 11 + 11 - 11 - 11
  x = 0   or   4x = 11    or    4x = -11
4 4 4 4
x = 2³/₄   or      x = -2³/₄

Solution Set: {0, ±2³/₄}

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