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Mariulka [41]
3 years ago
14

What is the circumference of the circle below? Use the formula C = 2tr.

Mathematics
2 answers:
stiv31 [10]3 years ago
7 0
The answer to this question would be B
alexandr1967 [171]3 years ago
5 0

Answer: B

Step-by-step explanation:

The formula for circumference of a circle is 2 pie radius (2πr)

1. radius=5

2 so 2π(5)

3 2x5=10

4. 10π

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(6x+2.4):3 /59=2.25:1/3 find x<br> hurry plz
IgorLugansk [536]

Solution of (6x + 2.4): 3 ⁵/₉ = 2.25 : ¹/₃ is 3.6

Further explanation

Order of Operations in Mathematics follow the following rule :

Parentheses

Exponents

Multiplication and Division

Addition and Subtraction

This rule is known as the PEMDAS method.

In working on a mathematical problem, we first calculate an operation that is in parentheses, followed by exponentiation, then multiplication or division, and finally addition or subtraction.

8 0
2 years ago
Read 2 more answers
Question 1 (1 point)
olga55 [171]

Answer:

1) 2y^{2}+4y-9

2) 18x^{5}y^{4}z

3) 6x^{5}-12x^{4}+9x^{3}

4) 40

5) x^{3}-7x^{2}+3x+36


Step-by-step explanation:

1) Distribute the negative sign that is outside the parentheses and then you must add like terms, as following:

(y^{2}-3y-5)-(-y^{2}-7y+4)=y^{2}-3y-5+y^{2}+7y-4=2y^{2}+4y-9

2) According to the Product property of exponents, when you multiply powers with the same base, you must add the exponents. Then:

(6xy^{3}z)(3x^{2}yx^{2})=18x^{5}y^{4}z

3) Apply the Distributive property and the Product property of exponents. Then, you obtain:

-3x^{3}(-2x^{2}+4x-3)=6x^{5}-12x^{4}+9x^{3}

4) (4a+5)^{2} is a square of a sum, then, by definition you have:

(a+b)^{2}=a^{2}+2ab+b^{2}

Then:

(4a+5)^{2}=(4a)^{2}+2(4a)(5)+5^{2}=16a^{2}+40a+25

The coefficient of the second term is the number in front of the variable <em>a.</em> Then, the answer is: 40

5)  Apply the Distributive property and the Product property of exponents, then, oyou must add the like terms:

(x-4)(x^{2}-3x-9)=x^{3}-3x^{2}-9x-4x^{2}+12x+36=x^{3}-7x^{2}+3x+36

6 0
3 years ago
My area is 93 x 81. what is the square footage
Sidana [21]
What you do is you do 93 x 81.

                             93
                          x 81
                      ------------
                              93
                        + 7440
                      -------------
                           7,533

That's the square footage. Hope it helps!
5 0
3 years ago
Explain why any of the four operations (+x +) placed between the two terms 5 and-3/(radical sign) 8 will result in an irrational
kompoz [17]

To answer this question we will have to understand the nature of \sqrt{8}.

\sqrt{8} can be rewritten as: \sqrt{2\times 2\times 2} =2\sqrt{2}. Now, \sqrt{2} is an irrational number and thus any of the four operations of addition, multiplication, subtraction or division placed anywhere between any of these terms will always result in an irrational number.

The only way irrational numbers can be made rational is by dividing or multiplying the given irrational number by the same irrational number.

8 0
3 years ago
Beth had 1 yard of ribbon she used 1/4 yard for a project she wants to divide the rest into 1/8 yard pieces
Lesechka [4]
She'll have 6/8 yard of ribbon left
3 0
3 years ago
Read 2 more answers
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