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3 years ago

Help me pls (: l: ):

Mathematics

2 answers:

AURORKA [14]3 years ago

7 0

Fraction:6/10
Decimal:0.6
Percent:60%

densk [106]3 years ago

4 0

Fraction: 5/10

Demical: 0.5

Percent: 50%

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The gravitational force exerted on a baseball is 2.24 N down. A pitcher throws the ball horizontally with velocity 17.0 m/s by u

Fittoniya [83]

To have a weight of 2.21N., the ball's mass is (2.21/9.8) = .226kg.
a) d = 1/2 (vt), = 1/2 (18 x .17), = 1.53m. 
b) Acceleration of the ball = (v/t), = 18/.17, = 105.88m/sec^2. 
f = (ma), = .226 x 105.88, = 23.92N.

4 0

3 years ago

The 1992 world speed record for a bicycle (human-powered vehicle) was set by Chris Huber. His time through the measured 200 m st

Reil [10]

Answer:

a) 30.726m/s and b) 5.5549s

Step-by-step explanation:

a.) What was Chris Huber’s speed in meters per second(m/s)?

Given the distance and time, the formula to obtain the speed is

$v=\frac{d}{t}$ .

Applying this to our problem we have that

$v=\frac{200m}{6.509s}= 30.726m/s$ .

So, Chris Huber’s speed in meters per second(m/s) was 30.726m/s.

b) What was Whittingham’s time through the 200 m?

In a) we stated that $v=\frac{d}{t}$ . This formula implies that

$t=\frac{d}{v}$ .

First, observer that $19\frac{km}{h} =19,000\frac{m}{h}=\frac{19,000}{3,600}m/s= 5.2777m/s$ .

Then, Sam Whittingham speed was equal to Chris Huber’s speed plus 5.2777 m/s. So, $v=30.726\frac{m}{s} +5.2777\frac{m}{s}= 36.003 m/s.$

Then, applying 1) we have that

$t=\frac{200m}{36.003m/s}=5.5549s.$

So, Sam Whittingham’s time through the 200 m was 5.5549s.

5 0

3 years ago

32.5% of what number is 12.48?

vagabundo [1.1K]

Answer:

38.4;

Step-by-step explanation:

32.5% × ? = 12.48

? =

12.48 ÷ 32.5% =

12.48 ÷ (32.5 ÷ 100) =

(100 × 12.48) ÷ 32.5 =

1,248 ÷ 32.5 =

38.4;

5 0

3 years ago

Please help me with this!!

Sergeu [11.5K]

Answer:

yea

Step-by-step explanation:

3 0

3 years ago

What is 11.876 rounded to the nearest tenth?

vesna_86 [32]

Answer:

11.9

Step-by-step explanation:

The tenth place is the first decimal. You round down from 1-4 and up from 5-9, so round up.

11.9

3 0

3 years ago

Read 2 more answers