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3 years ago

What is the lcm of 4 and 5

Mathematics

1 answer:

timama [110]3 years ago

8 0

Answer:

Step-by-step explanation:

4 * 1 = 4 5 * 1 = 5

4 * 2 = 8 5 * 2 = 10

4* 3 = 12 5 * 3 = 15

4 * 4 = 16 5 * 4 = 20

4 * 5 = 20

they both go into 20 equally. there is no number lower than 20 that they both go into

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F(x) = -4x2 + 10<br> Find f(-2)

Veronika [31]

Answer:

f(-2) = -6

Step-by-step explanation:

In the expression, to get f(-2);

we simply substitute the value of x with -2

We have this as;

f(-2) = -4(-2)^2 + 10

f(-2) = -4(4) + 10

f(-2) = -16 + 10

f(-2) = -6

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3 years ago

School starts in 45 minutes and you live 13 miles from school. What average speed (in miles per hour) would allow you to arrive

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8.2 minutes

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Step-by-step explanation:

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2 years ago

Is 19 equal to 4.358

AURORKA [14]

Answer:

Step-by-step explanation:

19=19 and 4.358=4.358

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2 years ago

Required information Skip to question A die (six faces) has the number 1 painted on two of its faces, the number 2 painted on th

grigory [225]

Answer:

The change to the face 3 affects the value of P(Odd Number)

Step-by-step explanation:

Analysing the question one statement at a time.

Before the face with 3 is loaded to be twice likely to come up.

The sample space is:

$S = \{1,1,2,2,2,3\}$

And the probability of each is:

$P(1) = \frac{n(1)}{n(s)}$

$P(1) = \frac{2}{6}$

$P(1) = \frac{1}{3}$

$P(2) = \frac{n(2)}{n(s)}$

$P(2) = \frac{3}{6}$

$P(2) = \frac{1}{2}$

$P(3) = \frac{n(3)}{n(s)}$

$P(3) = \frac{1}{6}$

P(Odd Number) is then calculated as:

$P(Odd\ Number) = P(1) + P(3)$

$P(Odd\ Number) = \frac{1}{3} + \frac{1}{6}$

Take LCM

$P(Odd\ Number) = \frac{2+1}{6}$

$P(Odd\ Number) = \frac{3}{6}$

$P(Odd\ Number) = \frac{1}{2}$

After the face with 3 is loaded to be twice likely to come up.

The sample space becomes:

$S = \{1,1,2,2,2,3,3\}$

The probability of each is:

$P(1) = \frac{n(1)}{n(s)}$

$P(1) = \frac{2}{7}$

$P(2) = \frac{n(2)}{n(s)}$

$P(2) = \frac{3}{7}$

$P(3) = \frac{n(3)}{n(s)}$

$P(3) = \frac{1}{7}$

$P(Odd\ Number) = P(1) + P(3)$

$P(Odd\ Number) = \frac{2}{7} + \frac{1}{7}$

Take LCM

$P(Odd\ Number) = \frac{2+1}{7}$

$P(Odd\ Number) = \frac{3}{7}$

Comparing P(Odd Number) before and after

$P(Odd\ Number) = \frac{1}{2}$ --- Before

$P(Odd\ Number) = \frac{3}{7}$ --- After

<em>We can conclude that the change to the face 3 affects the value of P(Odd Number)</em>

7 0

3 years ago

Wavelength varies inversely with frequency. Let k be the product of wavelength and frequency. Complete the table using the inver

Lerok [7]

Answer:

Step-by-step explanation:

a =

⇒ 670

b =

⇒ 301600

c =

⇒ 560

8 0

3 years ago

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