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2 years ago

Which is a good comparison of the estimated sum and the actual sum of 7 7/8 + 2 11/12?

Mathematics

2 answers:

aleksley [76]2 years ago

5 0

Answer:27.20833333

Step-by-step explanation: all you do is add them up and pick b or a for the answers

Amanda [17]2 years ago

3 0

Answer:

*thinking*

you would assume that it is 11 the actual is 10 19/24

Wich is not quite 11

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Type the integer that makes the following subtraction sentence true. ?-(-5)=7

larisa [96]

Answer:

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Step-by-step explanation:

2-(-5)=7

remember keep,change,flip

the new equation will be

2+5=7

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2 years ago

PQR is a right angled triangle calculate the size of angle marked x

romanna [79]

Answer:

$\displaystyle x \approx 37.4^\circ$

General Formulas and Concepts:

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] cosθ = adjacent over hypotenuse

Step-by-step explanation:

Step 1: Define

Angle θ = x

Adjacent Leg = 5.8

Hypotenuse = 7.3

Step 2: Solve for x

Substitute in variables [Cosine]: $\displaystyle cosx^\circ = \frac{5.8}{7.3}$
[Fraction] Divide: $\displaystyle cosx^\circ = 0.794521$
[Equality Property] Trig inverse: $\displaystyle x^\circ = cos^{-1}(0.794521)$
Evaluate trig inverse: $\displaystyle x = 37.39^\circ$
Round: $\displaystyle x \approx 37.4^\circ$

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2 years ago

F(x)=x2+3x-5 and g(x)=x/4-6.g(x)=x/4-6

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Answer:

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Step-by-step explanation:

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ollegr [7]

Answer:

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Step-by-step explanation:

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