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3 years ago

Which rational number equals 0.4? A. 2 over10 B. 2 over 9 C.4 over 10 D.4 over 9

Mathematics

2 answers:

kotegsom [21]3 years ago

5 0

Answer:

Answer C (4 over 10)

Step-by-step explanation:

A) 2 over 10 or 2/10 equals 0.2, therefore it is wrong

B) 2 over 9 or 2/9 equals 0.222..., therefore it is wrong

C) 4 over 10 or 4/10 equals 0.4, therefore it is <u>correct</u>

D) 4 over 9 or 4/9 equals 0.4444...,therefore it is wrong

Allisa [31]3 years ago

3 0

Answer:

C. 4/10

Step-by-step explanation:

a. 2/10 = 0.2

b. 2/9=0.2222...

c. 4/10=0.4

D. 4/9=0.4444...

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Please help me with this one

scoray [572]

Answer:

2/36

Step-by-step explanation:

The only outcomes that lead to a sum of 3 are (2,1) and (1,2) therefore there is only a 2 in 36 chance of rolling a sum of 3

3 0

3 years ago

randy earns $14.50 per hour for the first 40 hours worked in a week and $21.75 per hour for hours over 40. Last week Randy earne

Nutka1998 [239]

Answer:

4 hours

Step-by-step explanation:

We know the following:

Total amount Randy earned: $667

Pay for first 40 hours: $14.50 per hour

Pay after 40 hours: $21.75 per hour

We need to find the total extra hours: $x$

If the total number of hours worked are, $T$ , then: $x + 40 = T$

Total pay received for the first 40 hours: $40 \times 14.50 = 580$

If out of $667, Randy earns $580 from the first 40 hours, the left over are earned by extra hours.

$667 - $580 = $87 ------- (a)

Total pay received for working after 40 hours: $21.75x$

We know from eq (a) that total pay is 87, hence we can find the number of hours using this.

$21.75x = 87\\\\x = \frac{87}{21.75}\\\\x = 4$

Randy worked 4 extra hours.

6 0

3 years ago

Olivia and Camille went clothes shopping. Camille spent $19.40 less than twice what Olivia spent. In total, they spent $272.35.

nydimaria [60]

if Camille spent 19.40$ LESS than DOUBLE what Olivia spent then a rough estimate already can be Olivia spent 100 and Camille spent 172 but to find this out we have to add 19.40 onto 272.35 = 291.75 then we now that 291.75 is thrice what Olivia spent so if we third it we know what Olivia spent so 291.75/3 = 97.25 leaving 194.50 then if we minus 19.40 off 194.50 we get 175.10 so:

Camille spent: 175.10 and

Olivia Spent: 97.25

4 0

3 years ago

A group of 7 students was asked, "How many hours did you watch television last week?" Here are their responses. 17, 19, 5, 17, 2

Olenka [21]

Answer:

≈ 14.3 hours

Step-by-step explanation:

The mean is calculated as

mean = $\frac{sum}{count}$ = $\frac{17+19+5+17+20+6+16}{7}$ = $\frac{100}{7}$ ≈ 14.3 ( to nearest tenth )