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3 years ago

I believe I know the answer but, I need a second opinion.

Mathematics

1 answer:

Neporo4naja [7]3 years ago

8 0

Should be 12.5, i think

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If r is the midpoint of AB and AR=14, then AB=______

skelet666 [1.2K]

Answer:

Step-by-step explanation:

The midpoint is halfway, so if half the length is 14 then the full length is 28 (14 × 2 = 28)

Hope this helps!

4 0

2 years ago

5x + y = 11<br>4x + y = 9

erma4kov [3.2K]

The first one is -5
The second one is -4

4 0

3 years ago

Raquel has created a program for a robot. The robot travels 10 meters and stops. The program is designed for wheels that are 2.5

Grace [21]

Answer:

Raquel should adjust the number of rotations to 115.81 rotations

Step-by-step explanation:

step 1

Find the circumference of the wheels that are 2.5 cm in diameter

The circumference is equal to

$C=2\pi r$

we have

$r=2.5/2=1.25\ cm$

assume

$\pi =3.14$

substitute

$C=2(3.14) (1.25)$

$C=7.85\ cm$

step 2

Find the number of rotations

Divide 10 meters by the circumference

$10\ m=1,000\ cm$

$1,000/7.85=127.39\ rotations$

step 3

For a diameter of 2.75 cm find how should she adjust the number of rotations so that the robot travels the same distance

Find the circumference of the wheels

The circumference is equal to

$C=2\pi r$

we have

$r=2.75/2=1.375\ cm$

assume

$\pi =3.14$

substitute

$C=2(3.14) (1.375)$

$C=8.635\ cm$

step 4

Find the number of rotations

Divide 10 meters by the circumference

$10\ m=1,000\ cm$

$1,000/8.635=115.81\ rotations$

3 0

2 years ago

UN<br><br><br>2. What is the conversion from cubic metres to litres?

SSSSS [86.1K]

Answer:

1 cubic meter equals 1000 liters

Step-by-step explanation:

i think this is right

7 0

2 years ago

You walk 3/8 miles to a music store. Then you walk another 1/3 miles to a clothing store. How many miles have you walked in all?

Rudik [331]

Answer:

You have walked $\frac{17}{24}$ miles

Step-by-step explanation:

In order to add these two fractions, we must find a common denominator. In this case, I used 24

$\frac{3}{8} +\frac{1}{3} \\\\\frac{9}{24} +\frac{8}{24} =\frac{17}{24}$

6 0

3 years ago

Read 2 more answers