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4 years ago

If 29 more than 2 times a number is -15, what is the number? -7 -22 7 22

1 answer:

5 0

You can write this as 2x + 29 = -15 where x is the number you are looking for. Rearrange this to get 2x = -44 and then divide by 2 to get x = -22.

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What is the value of x?

Jobisdone [24]

Answer:

x = 10

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS
Equality Properties

Geometry

All angles in a triangle add up to 180°

Step-by-step explanation:

Step 1: Set up equation

(x + 1)° + (10x - 7)° + (8x - 4)° = 180°

Step 2: Solve for x

Combine like terms: 19x - 10 = 180
Isolate x term: 19x = 190
Isolate x: x = 10

5 0

3 years ago

What is the recursive formula for this geometric sequence?–2, –16, –128, –1024, ...

Tatiana [17]

Answer:

$b_n=-2\cdot 8^{n-1}$

Step-by-step explanation:

Denote first four terms of the geometrc sequence as

$b_1=-2,\\ \\b_2=-16,\\ \\b_3=-128,\\ \\b_4=-1024.$

Note that

$b_2=b_1\cdot q\Rightarrow -16=-2\cdot 8;\\ \\b_3=b_2\cdot q\Rightarrow -128=-16\cdot 8;\\ \\b_4=b_3\cdot q\Rightarrow -1024=-128\cdot 8.$

Then the common ratio is

$q=8.$

Therefore, the recursive formula for the geometric sequence is

$b_n=b_1\cdot q^{n-1}\Roghtarrow b_n=-2\cdot 8^{n-1}.$

5 0

3 years ago

Surface area of a sphere with a diameter of 17.5 inches

statuscvo [17]

Answer:

Ans is behind

Step-by-step explanation:

hope it helps you

6 0

3 years ago

Read 2 more answers

jake wants to enlarge his 12 foot by 14 foit garden. if he multiplies the dimensiond by 2, how will the area of the garden be af

marta [7]

12x14 is 168 12x2=24 14x2=28 24x28=672
672/168=4 The area is affected by a scale factor of four. Because the label of area is the unit squared, you just square the number that the dimensions are being multiplied by.

4 0

3 years ago

Using the expression 10xy + 6, what are the variables? Pleasee huryyy!!

earnstyle [38]

Answer:xy

Step-by-step explanation:

3 0

4 years ago