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3 years ago

A rectangle is 3 times as wide as it is long if x=10 what's the perimeter

Mathematics

1 answer:

Alex3 years ago

5 0

Answer:

80 units if the length is equal to x (it is unspecified)

Step-by-step explanation:

Assuming that the length is equal to x, then we know that the length is 10 units long because x = 10.

Since the width is 3 times longer than the length, we can also find that the width is 30 units long because 3 x 10 = 30.

Now, we can use the perimeter formula to find the perimeter of the rectangle.

The perimeter formula is P = 2 ( L + W ), with L being length and W being width.

Let's just substitute the numbers to find perimeter.

P = 2 ( 10 + 30 )

P = 2 ( 40 )

P = 80

So, the perimeter is 80 units.

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3 years ago

2. You throw a softball straight up into the air at a velocity of 30 feet per second. You release the softball at a height of 5.

nadya68 [22]

Answer:

$-16t^2+30t+5.8$

Step-by-step explanation:

We are given that

Initial velocity=30 ft/s

Initial position= $s_0=5.8 ft$

We have to write a mathematical model for height of the softball by using the position equation

The position equation on Earth's surface is given by

$h(t)=-16t^2+v_0t+s_0$

Where $v_0=$ Initial velocity

$s_0$ =Initial position

Substitute the values in the equation then, we get

$h(t)=-16t^2+30t+5.8$

Hence, the mathematical model for height of the softball is given by

$-16t^2+30t+5.8$

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4 years ago

M = -7 and it passes through the point (0,4)

Alla [95]

Answer:

Y = -7x + 4

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

The graph below shows Roy's distance from his office (y), in miles, after a certain amount of time (x), in minutes: Graph titled

Marina CMI [18]

Answer:

Felix

Step-by-step explanation:

The graph contains 3 segments,

first one is for the first 4minutes,

second one is for the next 2 minutes (standing still)

third one is for the last 2 minutes.

Only Felix has it right, the other students use absolute time in their statements, in stead of the difference between start and end. (e.g., from 4 to 6 is 2 minutes).

8 0

3 years ago

ASAP! Simplify -5 - square root -44

Tju [1.3M]

Answer:

$\boldmath-5-2i\sqrt{\boldmath11}$

Step-by-step explanation:

The not simplified form is $-5-\sqrt{-44}$

you know that $\sqrt{a\times b} = \sqrt{a} \times\sqrt{b}$ is true a and b are both positive or one of it is negative (not both of them).

You can write -44 as -1 × 4 × 11 inside square root.

So, $\sqrt{-44} = \sqrt{-1\times4\times11}=\sqrt{-1}\times\sqrt{4}\times\sqrt{11}=i\times2\times\sqrt{11}$ ( $\sqrt{4}=2$ )

$\therefore -5-\sqrt{-44} = -5-2i\sqrt{11}$

(NOTE : You must know that $\boldmath\sqrt{\boldmath-1}$ is written as $\boldsymbol i$ )

5 0

4 years ago