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3 years ago

Find a formula for a geometric sequence that begins with 7, 35, 175,...

Mathematics

2 answers:

Svetllana [295]3 years ago

4 0

Answer:

○ b. $\displaystyle b_n = 7(5)^{n - 1}$

Step-by-step explanation:

The original term is "7", the common ratio is "5", and finally, you set the exponent to the power of "n - 1".

I am joyous to assist you anytime.

alisha [4.7K]3 years ago

3 0

a = 7

r = 35/7 = 5

a × r^(n-1)

7 × 5^(n-1)

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Given ABCE is a rectangle, D is the midpoint of CE Prove AD =~ BD

Bas_tet [7]

Since the congruent operator is â‰… and since AD is congruent to BD, I'm going to assume that you want to prove that AD is congruent to BD.
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3 years ago

Expand & simplify 3(t+5)+5(t−6)

Reptile [31]

Answer:

8t - 15

Explanation:

⇒ 3(t+5)+5(t−6)

distribute inside parenthesis

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multiply the variables

⇒ 3t + 15 + 5t - 30

collect like terms

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6 0

2 years ago

Read 2 more answers

-2x + y =0 5x + 3y = -11

Ivahew [28]

Answer:

(-1, -2)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Algebra I

Solving systems of equations using substitution/elimination
Solving systems of equations by graphing

Step-by-step explanation:

Step 1: Define Systems

-2x + y = 0

5x + 3y = -11

Step 2: Rewrite Systems

-2x + y = 0

Add 2x on both sides: y = 2x

Step 3: Redefine Systems

y = 2x

5x + 3y = -11

Step 4: Solve for x

Substitution

Substitute in y: 5x + 3(2x) = -11
Multiply: 5x + 6x = -11
Combine like terms: 11x = -11
Isolate x: x = -1

Step 5: Solve for y

Define equation: y = 2x
Substitute in x: y = 2(-1)
Multiply: y = -2

Step 6: Graph Systems

Check the solution set.

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3 years ago

A retirangle has an area of 40 units.the lenght is 6 units greater then the width

slega [8]

40 units multiply by 6 units equal 240 units

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3 years ago

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The volume of an oblique pyramid with a square base is V units3 and the height is h units.

TiliK225 [7]

The volume of a quadrangular base pyramid is:
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Answer:
An expression that represents the area of the base of the pyramid is:
A) 3v / h units

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3 years ago

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Find a formula for a geometric sequence that begins with 7, 35, 175,...​

Find a formula for a geometric sequence that begins with 7, 35, 175,...