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3 years ago

The sum of 21, 1.7,0.25

Mathematics

1 answer:

Scorpion4ik [409]3 years ago

8 0

21+1.7+0.25=22.95

You add 21+1.7, which equals 22.7, then add 0.25 to get 22.95.

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3 years ago

Read 2 more answers

Find the inverse of function f. f(x)=1/3 - 1/21x

Elena L [17]

Answer:

A. $\displaystyle f^{-1}(x) = 7 - 21x$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Distributive Property

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Division Property of Equality
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Step-by-step explanation:

Step 1: Define

Identify

$\displaystyle f(x) = \frac{1}{3} - \frac{1}{21}x$

Step 2: Find inverse

Rewrite: $\displaystyle y = \frac{1}{3} - \frac{1}{21}x$
Swap: $\displaystyle x = \frac{1}{3} - \frac{1}{21}y$
[Subtraction Property of Equality] Isolate y term: $\displaystyle x - \frac{1}{3} = -\frac{1}{21}y$
[Multiplication Property of Equality] Isolate y: $\displaystyle -21(x - \frac{1}{3}) = y$
[Distributive Property] Distribute -21: $\displaystyle 7 - 21x = y$
Rewrite: $\displaystyle f^{-1}(x) = 7 - 21x$

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3 years ago

Find the exact value of the expression. Write the answer as a single fraction. Do not use a calculator.

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3 years ago

What is the slope-intercept form of 11x-13y=39?

Inessa05 [86]

Answer:

Step-by-step explanation:

y=11/13x−3

hope this helps and mark me brainliest as well please.

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Find x-component of vector v⃗ =(250m/s , 30∘ above + x-axis)

Firlakuza [10]

We have to calculate the x- component of vector v = 250 m/s.
α = 30° ( above the x-axis ):
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Answer:
v x = 216.5 m/s

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