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3 years ago

8.5x-5+2.6x simplify the expression

Mathematics

1 answer:

Dominik [7]3 years ago

5 0

I am pretty sure the answer is 11.1x-5

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Express in simplest form- 56:21 Your answer

Dmitrij [34]

The simplest form of 56:21 is 8:3.

If you divide each number by 7, you would get 8:3.

Hope this helps!

4 0

3 years ago

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Please I really need help with 10-17

Ira Lisetskai [31]

This is for number 10

6 0

3 years ago

What is the value of x to the nearest tenth?

Colt1911 [192]

Answer:

C. 17.6

General Formulas and Concepts:

Math

Rounding

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Trigonometry

[Right Triangles Only] SOHCAHTOA
[Right Triangles Only] tanθ = opposite over adjacent

Step-by-step explanation:

Step 1: Identify Variables

Angle θ = 40°

Opposite Leg = x

Adjacent Leg = 21

Step 2: Solve for x

Substitute in variables [tangent]: $\displaystyle tan(40^\circ) = \frac{x}{21}$
[Multiplication Property of Equality] Isolate x: $\displaystyle 21tan(40^\circ) = x$
Rewrite: $\displaystyle x = 21tan(40^\circ)$
Evaluate: $\displaystyle x = 17.6211$
Round: $\displaystyle x \approx 17.6$

6 0

3 years ago

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Selena and Drake are evaluating the expression (StartFraction r s Superscript negative 2 Baseline Over r squared s Superscript n

Anastasy [175]

Answer: A- Selena is incorrect because she should have substituted the values for the variables first, and then simplifed

i just took the test. i know that drake is correct because his finale answer was -1/2 and Selenas finale answer was 1/2 if she would have substituted her vaules before simplifying she would have gotten the answer 1/-2 instead of -1/-2 which resulted in her finale answer to be 1/2

8 0

4 years ago

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How do you factor 3y+16y+5

satela [25.4K]

It would be (3y+1)(y+5), because the factors of 3 are 1 and 3, and factors of 5 are 1 and 5, 3*5=15,1*1=1, 15 and 1 make a sum of 16

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3 years ago