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2 years ago

Please answer this, i will give brainliest. lol

Mathematics

1 answer:

Mila [183]2 years ago

4 0

Answer:

Step-by-step explanation:

10-43:

A. To get the area of a circle, multiply the diameter (20cm), by pi. (3.14)

B. Area=314.16cm²

10-45:

A. 30%.

B. The waterpark and the amusement park.

C. I would recommend doing another survey between the waterpark and the amusement park.

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7. A farmer plants 987 apple trees in

sweet-ann [11.9K]

Answer:

No because you can split a tree

Step-by-step explanation:

3 0

2 years ago

What is the sales tax on the chair shown if the tax rate is 5.75% ( the chairs price is $178.90)

Arturiano [62]

Sales tax is:
$178.90* (5.75/100)=$10.29

The sales tax of the chair is $10.29~

7 0

3 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: $\displaystyle x \approx 37.4^\circ$

8 0

2 years ago

Math help!!Who knows the answers to all 4? If you have snap I can sent you a clearer photo.

Citrus2011 [14]

Answer:

13 is reflection over the X axis

Step-by-step explanation:

4 0

3 years ago

Find the difference between the result of one sixth of product of 10 and 3 multiplied by 4 and 30

kherson [118]

Answer:

10 or -10,

Read the explanation

Step-by-step explanation:

Rewrite this problem as a numerical expression. As per the wording of this problem, there can be two expressions derived.

1. $((\frac{1}{6}(10*3)*4)-30$

2. $30-((\frac{1}{6}(10*3)*4)$

Simplify, remember the order of operations. The order of operations is the sequence by which one is supposed to perform operations in a numerical expression. This order is the following:

1. Parenthesis

2. Exponents

3. Multiplication or division

4. Addition or Subtraction

Use this sequence when simplifying and solving the expression:

Expression 1

$((\frac{1}{6}(10*3)*4)-30\\\\=((\frac{1}{6}(30)*4)-30\\\\=(5*4)-30\\\\=20 - 30\\\\= -10$

Expression 2

$30-((\frac{1}{6}(10*3)*4)\\\\=30-((\frac{1}{6}(30)*4)\\\\=30-(5*4)\\\\= 30-20\\\\= 10$

6 0

3 years ago