MATHEMATICS HIGH SCHOOL

7.2 x 12 x 0.23 = ? Round to the nearest hundredth.A. 19.88
B. 19.87
C. 19.44
D. 19.43

Answers

Answer 1
Answer: B. 19.87

The answer of the multiplication is 19.872. close to the nearest hundredth, it is 19.87. That is because the digit after 7 is 2 which is less than 5. had it been 5 or greater than 5, the answer would have been A. 19.88.
Answer 2
Answer: The answer is B. 7.2*12=86.4, 86.4*0.23=19.872.

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The probablilty that andreas train is late is 0.05 work out the probablilty that her train isnt late?

Answers

Probability is always out of 1, therefore, you have to subtract 0.05 from 1.
1-0.05= 0.95
Therefore, the probablility that the train isn't late is 0.95 (or 95%)
hope this helps :)

How many multiples of 9 are there between 100 and 2,000?

Answers

first of all, find the first number more than 100 that can divided by 9, and it's 108 (we'll call it as 'a') then, find the number less than 2000 that can divided by 9, it's 1.998 (we'll call it as 'Un')

Un = a + (n-1).b
1998 = 108 + (n-1).9
1998 = 108 + 9n -9
1899 = 9n
211 = n

and the total is
Sn = n/2 (a+un)
s211 = 211/2 (108+1998)
= 222.183

Factor the expression y2+6y-16

Answers

That would be (y+8) (y-2)

PLZZZ HELP 30 POINTSSS!!! Select the correct answer.Which point of intersection is the solution to the system of equations and ?

Answers

Answer:

the answer is A

Step-by-step explanation:

Answer:A.

Step-by-step explanation:

A corn field has an area of 48,000 square. Ft. The width of the field is 300 feet.

Answers

Step-by-step explanation:

A) width × length = area

300 ft × l = 48000 sq ft

B) l = 48000 ÷ 300

l = 160 ft

2x2 − 10x − 28 6x × 6 x − 7

Answers

Answer:

no real solutions

Step-by-step explanation:

If equation is...

2x^2 - 10x - 28 = 6x(6x) - 7\n2x^2 - 10x - 28 = 6x^2 - 7\n0 = 4x^2 + 10x + 21\n4x^2 + 10x + 21 = 0

= no real solutions
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