3 years ago

Use front-end estimation to estimate the sum 56.7+23.44

Mathematics

1 answer:

kherson [118]3 years ago

6 0

Answer:

80.14

Step-by-step explanation:

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3 years ago

What is 3x + 4 = 12

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Answer:

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A geometric sequence is shown on the graph below. What is the formula for the nth term of the sequence?

larisa [96]

Answer:

$\boxed{u_n=40*(\frac{1}{2} )^{n-1})}\\$

Step-by-step explanation:

$u_1=40\\\\u_2=20=u_1*(\frac{1}{2} )^{2-1}\\\\u_3=10=u_1*(\frac{1}{2} )^{3-1}\\\\u_4=5=u_1*(\frac{1}{2} )^{4-1}\\\\u_5=2.5=u_1*(\frac{1}{2} )^{5-1}\\\\\\\boxed{u_n=40*(\frac{1}{2} )^{n-1})}\\$

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3 years ago

[20+(2.5x3)]-27 please help lol

lozanna [386]

Answer:

0.5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define Expression

[20 + (2.5 × 3)] - 27

Step 2: Evaluate

[Brackets - Parenthesis] Multiply: [20 + 7.5] - 27
[Brackets] Add: 27.5 - 27
Subtract: 0.5

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3 years ago