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2 years ago

Jordan ran for 12 minutes.

Mathematics

2 answers:

nalin [4]2 years ago

8 0

Answer:

Jordan ran for 720 Seconds.

Step-by-step explanation:

X minutes multiplied by 60 gives you how many seconds. X is your variable, meaning it stands in for a number. Since you have 12 minutes, you would replace x with 12, giving you 12 multiplied by 60= seconds. 12x60=720, meaning Jordan ran for 720 seconds.

schepotkina [342]2 years ago

6 0

Answer:

1 minute =60second

12x60=720second

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Which fraction is equivalent to 3/4?

Black_prince [1.1K]

Answer:

6/8, 9/12, 12/16 etc.

Step-by-step explanation:

You just think of a number for an example 2. Multiply 3 and 4 by it and you have a fraction equivalent to 3/4.

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3 years ago

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Which equation can be used to find x, the length of the hypotenuse of the right triangle? A triangle has side lengths 18, 24, x.

natima [27]

Answer:

A triangle has side lengths 18, 24, x.

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3 years ago

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Grace [21]

Answer:

1. 3

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2 years ago

find the width of radius r if the width w of the shaded region is 2cm and its area is 176cm^2, use 22/7 for pi (its a full circl

arsen [322]

The area of a shape is the amount of space it can occupy.

<em>The value of r is 13</em>

From the question (see attachment), we have:

$\mathbf{A =176}$ --- area of the shaded region

$\mathbf{w = 2}$ --- the width of the shaded region

The area of the complete circle would be:

$\mathbf{A_1 =\pi (r + w)^2}$

The area of the small circle is:

$\mathbf{A_2 =\pi r^2}$

So, the area of the shaded region is:

$\mathbf{A = A_1 - A_2}$

Substitute known values

$\mathbf{176 =\pi (r + w)^2 - \pi r^2 }$

Substitute 2 for w

$\mathbf{176 =\pi (r + 2)^2 - \pi r^2 }$

Expand

$\mathbf{176 =\pi (r^2 + 4r + 4) - \pi r^2 }$

Open brackets

$\mathbf{176 =\pi r^2 + 4\pi r + 4\pi - \pi r^2 }$

Cancel out line terms

$\mathbf{176 =4\pi r + 4\pi }$

Divide through by 4

$\mathbf{44 =\pi r + \pi }$

Factor out pi

$\mathbf{44 =\pi(r+ 1) }$

Divide through by pi

$\mathbf{r + 1= \frac{44}{ \pi} }$

Substitute 22/7 for pi

$\mathbf{r + 1= \frac{44}{ 22/7} }$

Using a calculator, we have

$\mathbf{r + 1= 14}$

Solve for r

$\mathbf{r= 14 -1}$

$\mathbf{r= 13}$

Hence, the value of r is 13

Read more about areas of circles at:

brainly.com/question/23328170

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1 year ago

Which side lengths form a right triangle? Choose all answers that apply: Choose all answers that apply: (Choice A) A \sqrt4, 10,

Vika [28.1K]

Answer:

(C)

Step-by-step explanation:

In order to find whether the given side lengths form a right triangle or not, we must show that it satisfies the Pythagoras theorem.

A. $\sqrt{4}$ , 10 and 116

According to Pythagoras theorem,

⇒ $(116)^2=4+100$

⇒ $13456=104$

which does not satisfy the condition, therefore these side lengths do not form a right triangle.

B. 3,6 and 8

According to Pythagoras theorem,

⇒ $(8)^{2}=(3)^2+(6)^2$

⇒ $64=9+36$

⇒ $64=45$

which does not satisfy the condition, therefore these side lengths do not form a right triangle.

C. 30, 40 and 50

According to Pythagoras theorem,

⇒ $(50)^{2}=(30)^2+(40)^2$

⇒ $2500=900+1600$

⇒ $2500=2500$

which satisfies the condition, therefore theses side lengths form right triangle.

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3 years ago