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2 years ago

What is the ratio 15 to 35 written as a fraction in lowest terms?

Mathematics

2 answers:

dmitriy555 [2]2 years ago

4 0

B 3/7 because 15 divided by 5 = 3 and 35 divided by 5 = 7

levacccp [35]2 years ago

4 0

Answer:

B 3/7

Step-by-step explanation:

15:35

reduce your ratio by a common factor, which would be 5

15/5=3 , 35/5=7. So you ratio is now 3:7

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John wants to nail a thumbtack on his circular board, pictured below. If the thumbtack is equally likely to be placed anywhere o

Nikitich [7]

Answer: A. 51%

Step-by-step explanation:

Area of circle = $\pi r^2$ , where r = radius of the circle.

In the figure below, we have the complete question.

According to that,

Radius of outer circle = 7ft

Radius of inner circle = 5ft

The probability that the thumbtack will be placed on the inner circle

$=\dfrac{\text{Area of inner circle}}{\text{Area of outer circle}}\\\\=\dfrac{\pi (5)^2}{\pi (7)^2}\\\\=\dfrac{25}{49}$ [π is canceled from numerator and denominator

in percent, $\dfrac{25}{49}\times100=51.0204081633\%\approx51\%$

So, the probability that the thumbtack will be placed on the inner circle = 51%

Hence, the correct option is A. 51%.

6 0

2 years ago

A cafeteria table has an area of 21 square feet. If three talbes are pushed together, what is the combined area of the talbes

Shtirlitz [24]

The combined area of the tables would be 63.

6 0

2 years ago

Read 2 more answers

Simplify: 6(2x-3)-(5x+7)

Gelneren [198K]

First I would distribute the left part like so:
12x - 18 - (5x + 7)

Then I would distribute the right side like so: (I'm just distributing a negative sign)
12x - 18 - 5x - 7

Then I combine like terms like so: (12x and -5x)
7x - 18 - 7

Then I would combine the other like terms like so: (-18 and -7)
7x - 25

I hope that helps! Feel free to let me know if you have any questions! :3

- mathwizzard3

5 0

2 years ago

Solve this equation 2.3 • (— 1.2)

oksian1 [2.3K]

2.3 times -1.2 is
-2.76

6 0

2 years ago

-(5y-6) + 4(3+5y) if y = 2

S_A_V [24]

Answer:

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Terms

Step-by-step explanation:

Step 1: Define

-(5y - 6) + 4(3 + 5y)

y = 2

Step 2: Simplify

Distribute: -5y + 6 + 12 + 20y
Combine like terms (y): 15y + 6 + 12
Combine like terms (Z): 15y + 18

Step 3: Evaluate

Substitute in y: 15(2) + 18
Multiply: 30 + 18
Add: 48

7 0

2 years ago