2 years ago

25:30= _:24 very confusing for me and I need help with others ones

2 answers:

7 0

20

Both 30 and 24 are divisible by 6 and 25 is divisible by 5. If we simplify the first one we get 5:6 so just think of 5:6 and you get 20:24

Fed [463]2 years ago

5 0

first, find the ratio of 30/24

30/24=

15/12=

5/4

25 divided by 5/4= 20

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Simplify (6x2 − 3 − 5x3) − (4x3 + 2x2 − 8).

mezya [45]

(6•2 - 3 - 5•3) - (4•3 + 2•2 - 8)
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(9 - 15) - (16 - 8)
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7 0

3 years ago

Read 2 more answers

An unknown number is increased by -3. the result is -8<br> find the unknown number

Rudiy27

Answer:

The unknown number is -5.

Step-by-step explanation:

-3 + -5 = -8

-8 - -3 = -5

-8 - -5 = -3

6 0

2 years ago

A factory employs several thousand workers, of whom 35% are Hispanic. If the 17 members of the union executive committee were ch

Elza [17]

Answer:

as p decreases, sigma decreases.

Step-by-step explanation:

Given that 35%are hispanic. For a sample of 17 members

n = 17

p = 0.35

and the number of Hispanics on the committee would have the binomial distribution

a) Mean of X = E(x) = $np = 17(0.35)\\= 5.95$

b) Std dev X = $\sqrt{npq} =\sqrt{5.95(0.65)} \\=1.9665$

c) Here n =17 and p =0.1

$Mean = 1.7\\\sigma = \sqrt{17(0.1)(0.9)} =1.234$

d) When p = 0.01

$Mean = 0.17\\\sigma = 0.410$

Thus we find that as p decreases, sigma decreases.

8 0

3 years ago

What are the factors in the expression (a+b)12

BlackZzzverrR [31]

Solution:

1) Distribute
12a+12b

Done!

7 0

3 years ago

X:y=5:3 and x+y=56 work out the value of x-y

Vladimir79 [104]

x - y = 14

given the ratio x : y = 5 : 3

then let x = 5x and y = 3x, hence equation can be expressed as

5x + 3x = 56

8x = 56 ( divide both sides by 8 )

x = 7

Hence x = 5 × 7 = 35 and y = 3 × 7 = 21

Thus x - y = 35 - 21 = 14

6 0

3 years ago