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1 year ago

Can anybody help me with this?

Mathematics

1 answer:

Anika [276]1 year ago

4 0

Answer:

Step-by-step explanation:

it's 12 by 10, 12 x 10 = 120. because it's a triangle, you divide 120 by 2.

120 / 2 = 60. therefore the area of the triangle is 60. I also don't know the unit im supposed to use. is it centimeters? inches? miles?

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What are three complex fractions that all simplify to one fourth

Margaret [11]

These could be some possible amswers:2/8, 8,32, 3/12

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2 years ago

A gazelle runs 780 feet in 12 seconds. Angela wants to determine how far a gazelle could run in 1 minute at this rate. Explain h

Hitman42 [59]

Answer:

In 1 min a gazelle runs 3,900 ft.

As a fraction, 1/65

In order to find the solution to this problem you could use a table.

Since we are using seconds we have to convert the 1 min = 60 seconds.

Sec | 12 | 60

Fts | 780 | x

12 goes into 60 5 times, so we have to multiply 780 by 5 which gives us 3900.

x=3900

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2 years ago

A truck driver travels at 59 miles per hour. The truck tires have a diameter of 30 inches. What is the angular velocity of the w

Misha Larkins [42]

Answer:

$661.4\ rpm$

Step-by-step explanation:

we know that

1 mile=63,360 inches

step 1

Find the circumference of the wheels

$C=2\pi r$

we have

$r=30/2=15\ in$ -----> the radius is half the diameter

substitute

$C=2\pi(15)$

$C=30\pi\ in$

assume

$\pi =3.14$

$C=30(3.14)=94.2\ in$

Remember that

The circumference of the wheels represent one revolution

Convert 59 miles per hour to inches per minute

$59\ mi/h=59*63,360/60=62,304\ in/min$

using proportion find the number of revolutions

$\frac{1}{94.2}\frac{rev}{in}=\frac{x}{62,304}\frac{rev}{in}\\ \\x=62,304/94.2\\ \\x=661.4\ rev$

therefore

substitute

$62,304\ in/min=661.4\ rev/min=661.4\ rpm$

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2 years ago

Twice a number is one

sladkih [1.3K]

would the answers be 0.5? i'm not sure but i tried. have a great day.

cuz half (x2) of a number (x) is (=) one..

2x=1

0.5=x

0.5x2=1

3 0

2 years ago

Read 2 more answers

A model rocket was built using a scale factor of 1:15 if the height of the actual rocket is 9.9m, what is the height of the mill

beks73 [17]

Answer:

660 mm

Step-by-step explanation:

we know that

The scale factor is $\frac{1}{15}$

That means

1 unit in the model represent 15 units in the actual

1 m in the model represent 15 m in the actual

To find out the height of the model rocket, divide the height of the actual rocket by 15

$9.9\ m=\frac{9.9}{15}= 0.66\ m$

Convert m to mm

Remember that

$1\ m=1,000\ mm$

To convert meters to millimeters, multiply by 1,000

$0.66\ m=0.66(1,000)=660\ mm$

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2 years ago