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3 years ago

Raul used this method to find the sum of 427+316.

Mathematics

2 answers:

Serga [27]3 years ago

7 0

427+316 will equal 743 and to check your work you can subtract

Natalka [10]3 years ago

3 0

It is like
427+316=743

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C=.41+.26(z-1) solve for z

Ksivusya [100]

$c=0.41+0.26(z-1) \\0.26(z-1)=c-0.41 \\z-1=(c-0.41)/0.26 \\\boxed{z=(c-0.41)/0.26+1}$

Hope this helps.

6 0

3 years ago

Use the equation below to find y, if m=6, x=3, and b = 10. y=mx+b

ICE Princess25 [194]

Answer:

y = 28

Step-by-step explanation:

y = mx + b

plug in values

y = (6)(3) + (10)

multiply

y = 18 + (10)

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3 years ago

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3 years ago

What is the value of cos theta given that (- 5, - 4) is a point on the terminal side of theta ?

Arte-miy333 [17]

Answer:I believe it's -5√41/41

Step-by-step explanation:

5 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

2 years ago

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