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kupik [55]
2 years ago
9

Fernando had 20 minutes to do a three-problem quiz. He spent 10 9/10 minutes on question A and 5 3/5 minutes on question B. How

much time did he have left for question C?
Mathematics
1 answer:
katrin2010 [14]2 years ago
4 0

Answer:

1.65 minutes

Step-by-step explanation:

10 9/10 + 5 3/5 = 16 1/2

16 1/2 divided by 20 = 1.65 or 33/20

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A color printer prints 21 pages in 10 minutes. How many pages does it print per minute?
vlabodo [156]
1/
21 pages: 10 minutes
? pages: 1 minute
21÷10=2.1. As a result,it prints 2.1 pages per minute
2/
$3: 5 lbs
?$: 1 lb
3÷5=0.6. As a result, she pays $0.60 per pound of rice. Hope it help!
5 0
3 years ago
Simplify by using the distributive property and then combining like terms for the expression 7(2x+3)
max2010maxim [7]

Answer:

14x+21

Step-by-step explanation:

7*2x=14x

7*3=21

14x+21

hope this helps :9

6 0
2 years ago
Suppose that diameters of a new species of apple have a bell-shaped distribution with a mean of 7.25cm and a standard deviation
Ulleksa [173]

Answer:

95%

Step-by-step explanation:

5 0
2 years ago
One sample has Aa Aa One sample has n 10 scores and a variance of s2 20, and a second sample has n 15 scores and a variance of s
siniylev [52]

Answer:

option (a) It will be closer to 30 than to 20

Step-by-step explanation:

Data provided in the question:

For sample 1:

n₁ = 10

variance, s₁² = 20

For sample 2:

n₂ = 15

variance, s₂² = 30

Now,

The pooled variance is calculated using the formula,

S^{2}_{p} = \frac{(n_{1}-1)\times s^{2}_{1} +(n_{2}-1)\times s^{2}_{2}}{n_{1}+n_{2}-2}

on substituting the given respective values, we get

S^{2}_{p} = \frac{(10-1)\times 20 +(15-1)\times 30}{10+15-2}

or

S^{2}_{p} = 26.0869

Hence,

the pooled variance will be closer to 30 than to 20

Therefore,

The correct answer is option (a) It will be closer to 30 than to 20

4 0
3 years ago
Find the final cost of an item that was originally price at $245 with a 15% discount and a 6% tax. Please help this is My last q
Soloha48 [4]

Answer:

12

Step-by-step explanation:

8 0
2 years ago
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