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maxonik [38]
3 years ago
13

Sammie read at the rate of 25 pages per hour. Alex read at the rate of 1/2 of a pages per minute. Who was reading faster? By how

many pages per hour faster?
Mathematics
1 answer:
exis [7]3 years ago
5 0

Answer:

Alex is reading faster by 5 more pages per hour.

Step-by-step explanation:

Alex's rate of reading is 1/2 pages per minute, or 1 page every 2 minutes. To convert his rate to pages per hour, we can divide 60 (minutes in an hour) by 2 (minutes it takes Alex to read a page) which is equal to 30 (pages read in an hour). Therefore, Alex is reading at 30 pages an hour and reading 5 more pages an hour than Sammie.

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What are the solutions of x^2 + 10x+16=0
Digiron [165]

Answer:

x=−2,−8

Step-by-step explanation:

Move terms to the left side. Then set each factor equal to zero.

x=−2,−8

5 0
3 years ago
Read 2 more answers
What is the value of x?
garik1379 [7]

Answer:

x=4

Step-by-step explanation:

3 0
3 years ago
A random sample of 11 fields of rye has a mean yield of 20.1 bushels per acre and standard deviation of 7.66 bushels per acre. D
Lady bird [3.3K]

Answer:

17.1≤x≤23.1

Step-by-step explanation:

The formula for calculating the confidence interval is expressed as;

CI = x ± z*s/√n

x is the mean yield = 20.1

z is the 80% z-score = 1.282

s is the standard deviation = 7.66

n is the sample size =  11

Substitute

CI = 20.1 ± 1.282*7.66/√11

CI = 20.1 ± 1.282*7.66/3.3166

CI = 20.1 ± 1.282*2.3095

CI =  20.1 ±2.9609

CI = (20.1-2.9609, 20.1+2.9609)

CI = (17.139, 23.0609)

hence the required confidence interval to 1dp is 17.1≤x≤23.1

8 0
3 years ago
The sales price of an LCD TV is $280, representing 30% off the regular price. What is the original price?
musickatia [10]

Answer:

$400

Step-by-step explanation:

Let 'p' represent the original price, the 'p-0.3p' represents the sale price:

280 = p - 0.3p .

Solving for 'p' we have p=400.

The original price of the television was $400

4 0
3 years ago
You are offered an item of $17.85 if the sellers states he normally sets the same item for $19.95 what percentage discount it he
nadezda [96]

Answer:

Discount percentage = 10.5% (Approx)

Therefore the discount is seller offering you is 10.5 % .

Step-by-step explanation:

Discount = Marked price - Selling price

As given

You are offered an item for $17.85. If the seller states he normally sells the same item for $19.95 .

Here

Marked price = $19.95

Selling price = $17.85

Discount = 19.95 - 17.85

           = $2.1

\frac{2.1 x 100}{19.95}

\frac{210}{19.95}

Discount percentage = 10.5% (Approx)

Therefore the discount is seller offering you is 10.5 % .

6 0
2 years ago
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