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3 years ago

Need help.. too hard:(

Mathematics

1 answer:

Diano4ka-milaya [45]3 years ago

7 0

Answer:

Step-by-step explanation:

BODMAS used.

[(3+2)*10]÷5*2=[5*10]÷5*2 (inner parenthesis)

=50÷5*2 [next parenthesis]

=10*2 {division}

=20 {multiplication}

2) $(\frac{2[5+7]}{3*2})+6*8=(\frac{2*12}{3*2})+6*8\\\\=(\frac{24}{6})+6*8\\\\=4+6*8\\\\=4+48\\\\=52$

3)15 - 8 + 18 ÷ 3*2 = 15 - 8 + 6*2

=15 - 8 + 12

= 7 +12

= 19

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The tyre of a car wheel has an outer diameter of 30 cm . How many times will the wheel rotate on a journey of 5 km

faltersainse [42]

Answer:

5305.1647 times

Step-by-step explanation:

The Circumference of a circle : πd

d = diameter of circle = 30 cm

Circumference of wheel = π * 30cm = 94.247779 cm

1km to cm

1km = 100000cm

5 km = 500000 cm

Hence, number of times wheel rotate on a 5km journey :

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3 years ago

Name three values of x that would result in <br> y = cot x being undefined.

tester [92]

Three values of x that would result in y = cot x being undefined are $0,\pi ,2\pi$

Given :

y=cot(x)

we need to find where cot(x) is undefined

We know that $cot(x)=\frac{cotx}{sinx}$

when the denominator is 0 then we can say cot(x) is undefined

Lets find out x values that makes sin(x) as 0

We know that sin(0)=0

$sin(\pi )=0\\sin(2\pi )=0$

x values values that makes sin(x)=0 are $0,\pi ,2\pi$

These x values makes the denominator of cot(x) as 0 and it is undefined

So , three values of x that would result in y = cot x being undefined are $0,\pi ,2\pi$

Learn more : brainly.ph/question/12155214

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3 years ago

Find your mass if a scale on Earth reads 650N when you stand on it.

anygoal [31]

Answer:

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Step-by-step explanation:

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mass = weight ÷ g

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Answer:

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pshichka [43]

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If you could paste the answers I can do it for you.<span />

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