Find the following: (a) Sum of the first 21 terms of the sequence: 5,9, 13, 17,...

Q: 1. Solve the following equations:  |2x+8|=3x+7 2|x - 7|=x-8 |3x-5|=4+2x

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Q: can you write out this formula in the form of a sentence ?

A: The formula of effect size is, ES=X¯1-X¯2s In the formula, X¯1 is the estimated first sample mean,…

Q: Add. (7y +y- 5) + (5y² - y -6) (7y? + y- 5) + (5y² - y-6) =D (Simplify your answer.)

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Q: Evaluate: (2x-y) ³(3x+2) when x = -3 and y = -4 O-56 O-28 O56 14

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Q: (9y² + y - 7) + (7y² -y-4) = ]

A: We have to add 9y2+y-7+7y2-y-4

Q: Consider the formulas/equations shown below. Determine which of the following "expresses y in terms…

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Q: Solve. X+y +z = - 11 2x + y-z = - 13 X-y +z = 1

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Q: 3 Let A= (MA-|| _23]~B-[2²] and = 6-9 -4 -6 Find - 2A + 2B. - 2A + 2B=

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Q: evaluate each algebraic expression for the given values of the variables. (1/x + 1/y)/(1/x - 1/y)…

A: Any algebraic expression of the form 1x+1y can be added using cross multiplication. Here multiply…

Q: Susan's income can be calculated as $12 times the number of hours worked (h) added to her other…

A: The equation of susane's income can be modelled as,

Q: (d) Identify the factor levels. (e) Identify the treatments. (f) Identify the experimental units and…

A: Given: 100 pizzas are randomly assigned to 5 different temperatures and baked for 15 minutes. 20…

Q: Which of the following pairs of lines are perpendicular? Select all that apply.

A: For equation of line :y=mx+c slope = m   if two lines are perpendicular then  multiplication of…

Q: = Let A = 9 -6-1 Find 4A + 3B. 4A + 3B = 7 and B = -2-5 7 8 (...

A: We will find the required.

Q: 2x,+x,-7 X; + Xz - 3x, = -10 6x, – 2x3 + X4 = 7 %3D 2x, – 3x, =13 =D13 |

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Q: 8) Statements 1. -6(2x +1) = -11x – 7x 1. -12x – 6 = -18x 2. -6 = -6x 3. 4. 1 =x 4. 2. 3.

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Q: 1, -3, 9, -27, ... Find a 11

A: Given series: 1,-3,9,-27,....

Q: Find values of x and y that make the following equation true: 1 -10] y] [1 21 2 .3 -8 6 4 -4. L-12…

A: Let's find x and y value .

Q: Solve. x+y+z = 3 2x +y-z = 8 x-y+z = - 5 The solution set is {OID}: (Simplify your answer.)

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Q: How many non-negative integer solutions are possible of the following equation?

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Q: An= -An-1+12An-2; A0=2; A1=16 Calculate A3

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Q: The table shows the movement of a stock for 30 randomly selected trading days. "Up" means the stock…

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Q: 15 Σ -3 i=1

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Q: If a +b = 1 and a? + b? = 2 find a+ b3=?

A: Given,           a+b=1 and a2+b2=2We know that,        a2+b2= a+b2-2ab        a3+b3=(a+b)(a2+b2-ab)

Q: D) lim f(x)=| 23 E) lim → 8 f(x) = F) lim f(x)= z 2

A: D) we know that, limx→3f(x)=limx→3+f(x)=limx→3-f(x)But limx→3+f(x)=2limx→3-f(x)=-1Since…

Q: If C = z - 9z2 and D = -x +3, find an expression that equals 3C – D in standard form.

A: Given: C=x-9x2, D=-x+3

Q: Draw a picture for each situation and solve for the missing part.

A: The figure can be drawn as follows:

Q: (d.) If x is equal to 25, what is the simplified numeric value of x2 2x5 + + + 2х (Your answer…

A: First simplify the terms then put x = 25

Q: MR=5(a+9) and MP=13a+42

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Q: 1) 3x + 4(2x + 9) 2) 5(x + 7) + 12 3) 4x + 8 + 3y + 2 + 7x

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Q: Find the following expressions if a = (6r, 0, r), b = (6s, –s, 7s), and c = (2t, 10t, 5). a ·b = 1.…

A: We need to find dot product.