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3 years ago

28. A number has 4 and 5 as factors. What other numbers must be factors? Why? What is the smallest number

Mathematics

1 answer:

sweet [91]3 years ago

5 0

Answer:

2, 10.

Smallest number = 20.

Step-by-step explanation:

It must have 2 as a factor because 4 is a factor, and 2 is a factor of 4.

Also 4 *5 = 20 so 10 must be a factor.

The smallest number possible is 20.

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Y is directly proportional to x when y=30, x=6

rosijanka [135]

Answer:

a) y = 5x

b) y = 60

Step-by-step explanation:

Since, y is directly proportional to x when y=30, x=6

$\therefore \: y \: \alpha \: \: x \\ \therefore \: y = kx ...(1) \\ plug \: y = 30 \: and \: x = 6 \: in \: eq \: (1)\\ 30 = k \times 6 \\ k = \frac{30}{6} \\ k = 5 \\ plug \: k = 5 \: in \: (1) \\ y = 5x....(2) \: (required \: equation) \\ plug \: x = 12 \: in \: eq \: (2) \\ y = 5 \times 12 \\ \huge \red{ \boxed{y = 60}}$

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3 years ago

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Answer:

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3 years ago

A conical paper cup has a radius of 2 inches. Approximate, to the nearest degree, the angle β (see the figure) so that the cone

Aneli [31]

I don't know where the angle β is, so I will make the assumption that tanβ = h/r
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3 years ago

What is the value of x?: -5x - 16 = 8x - 3

marysya [2.9K]

Answer:

x = -13/3 or -4 1/3 or - 4.333...333

Step-by-step explanation:

-5x - 16 = 8x - 3

-16 = 8x - 3 - 5x

-16 + 3 = 8x - 5x

-13 = 3x

x = -13/3 or -4 1/3 or - 4.333...333

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3 years ago

Read 2 more answers

L.c.m of 84 ,27,35,45 <br>please help

den301095 [7]

Answer:

3780

Step-by-step explanation:

84 = 2^2 * 3 * 7

27 = 3^3

35 = 5 * 7

45 = 3^2 * 5

lcm = 2^2 * 3^3 * 5 * 7 = 3780

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3 years ago