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dlinn [17]
3 years ago
13

The wheels on Karen’s rollerblades each have a diameter of 5 cm. How far will the rollerblade travel in one turn of the wheel? U

se a calculator and round your answer to the nearest tenth of a centimeter.
Mathematics
1 answer:
Ierofanga [76]3 years ago
8 0
To find the distance in one turn of the wheel you have to find the circumference of the wheel.

Circumference = pi x d
= 3.14 x 5
= 15.7 cm

therefore the rollerblade wheel will travel 15.7 cm per rotation

hope this helps! if you did not understand a step or concept please let me know!
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In a rectangle diagonal is 5cm ,breadth is 3cm .find the area and perimeter  of the rectangle? (STEP BY STEP EXPLANATION)​
DerKrebs [107]

Answer:

The area of rectangle is 12cm² and the perimeter is 14cm.

Step-by-step explanation:

First, you have to find the length of the rectangle using Pythagoras Theorem :

a² + b² = c²

a² + 3² = 5²

a² = 5² - 3²

a² = 16

a = √16

a = 4 cm

Next, you have to find the perimeter and area of rectangle :

Perimeter = 2(length + breadth)

P = 2(4 + 3)

P = 2(7)

P = 14 cm

Area = length×breadth

A = 4×3

A = 12 cm²

3 0
2 years ago
I need help on math. ASAP please I am stuck on this homework problem
Papessa [141]

Answer: white = $13, double = $14

<u>Step-by-step explanation:</u>

Let white chocolate chip dough = x

Let double chocolate chip dough = y

Mary:      3x + 2y = 67

Darryl:  <u> -(3x + 4y = 95)</u>

                     -2y = -28

                  <u> ÷-2   </u>  <u>÷-2  </u>

                        y = 14

3x + 2y = 67

3x + 2(14) = 67

3x + 28 = 67

<u>       -28 </u>  <u>-28</u>

3x         = 39  

<u>÷3        </u>   <u>÷3  </u>

 x         = 13

 

3 0
3 years ago
What is an equivalent form of 14(p + 6) − 10(2q + 5)?
aalyn [17]

The equivalent form of 14(p + 6) − 10(2q + 5)  is 14p − 20q + 34.

<h3>What is mathematical expansion?</h3>

An mathematical expansion occurs when a mathematical object is been scaled using a  scale factor that is greater in absolute value than one.

14(p + 6) − 10(2q + 5)  

If we open the bracket, we have

14p − 20q + 34

Therefore option D is correct.

Learn more about mathematical expansion from

brainly.com/question/13602562

#SPJ1

5 0
1 year ago
What is the standard form of the equation<br><br>Center (-14,5), circumference: 22π
IRISSAK [1]

The standard equation for a circle with center at (h,k) and radius r is

(x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center of the circle.

The formula for the circumference of a circle is C = 2pi*r.  In this particular problem, we need to determine the radius of the circle.  That radius is:  r = C/[2pi].  Here, C = 22pi, so we get r = 22pi/[2pi], and so r^2 = 11^2.

Putting to use the given info, we have:

(x+14)^2 + (y-5)^2 = 11^2

6 0
3 years ago
Working together, it takes Sam, Jenna, and Francisco two hours to paint one room. When Sam works alone, he can paint one room in
lutik1710 [3]

Answer:  12 hours

Step-by-step explanation:

Given : Working together, it takes Sam, Jenna, and Francisco two hours to paint one room.

When Sam works alone, he can paint one room in 6 hours. When Jenna works alone, she can paint one room in 4 hours.

Let 't' be the time taken by Francisco to paint one room on his own.

Then , we have

Rate of work of  Sam +Rate of work of Jenna + Rate of work of  Francisco =Rate of work they all do together

\dfrac{1}{6}+\dfrac{1}{4}+\dfrac{1}{t}=\dfrac{1}{2}

i.e.  \dfrac{1}{t}=\dfrac{1}{2}-(\dfrac{1}{6}+\dfrac{1}{4})

i.e.  \dfrac{1}{t}=\dfrac{1}{2}-(\dfrac{4+6}{24})

i.e.  \dfrac{1}{t}=\dfrac{1}{2}-\dfrac{10}{24}

i.e.  \dfrac{1}{t}=\dfrac{1}{2}-\dfrac{5}{12}

i.e.  \dfrac{1}{t}=\dfrac{6-5}{12}

i.e.  \dfrac{1}{t}=\dfrac{1}{12}

i.e. t= 12

Hence,  Francisco would take 12 hours to  paint one room on his own.

8 0
3 years ago
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