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OverLord2011 [107]
3 years ago
6

I don't know how to do it

Mathematics
1 answer:
irina1246 [14]3 years ago
7 0
B/3 + 13 = 11
b/3 = 11 - 13
b/3 = -2
b = -2×3
b = -6
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Taylor ran 57 minutes on Tuesday and 48 minutes on Saturday. Mark ran 62 minutes on Tuesday and 53 minutes on Saturday. Taylor s
marusya05 [52]

Let's compare!

Taylor ran 57 + 48 mins total. Sum would be 105 mins.

Mark ran 62 + 53 mins total. Sum would be 115 mins.

Clearly, the two sums are different when we compare them using subtraction.

115 - 105 = 10. Mark ran 10 mins longer than Taylor.

8 0
3 years ago
Read 2 more answers
9. If 15 men working 10 days earn $500. How much will 12 men earn working 14,
Leno4ka [110]

Answer:

Firstly need to understand the questions.

If 15 men working 10 days, They earn 500.

If 12 men working 14 days, how much they will earn?

Step-by-step explanation:

560

Solution:

15 men working for 10 days =500

1 man working for 1 day = 500/(10*15) =10/3

Now 12 men working for 14 days = 12*14*10/3 =560.

I am pretty sure that answer is right.

Thank you :)

6 0
3 years ago
98.42 divided by 1.8
igomit [66]
54.67 but if rounded it will be 54.7
7 0
3 years ago
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An electrician charges $40 to come to your house.She also charges $55for each that she works. The electrician charges you total
shusha [124]

Answer:

Step-by-step explanation:

First, write an equation. 55x+40=190.

X represents the hours the electrician works. The 55 represents the $55 that she charges for each hour she works. The +40 for the $40 that was the price just to come to your house. The 190 is the total cost. Now, solve that equation.

55x+40=190

55x=150

x=2.72727272...

So the answer is 2.727 hours. It can be rounded as needed or turned into a decimal, 2 8/11.

5 0
3 years ago
We would like to estimate the proportion of UF students who owns a scooter to within 1% of the truth, with 95% confidence. We do
professor190 [17]

Answer:

Option A) 9604

Step-by-step explanation:

We are given the following in the question:

Confidence level = 95%

Standard error = 1%

p = q = 0.5

Formula for sample size:

n = (z_{stat}\times \dfrac{p(1-p)}{\text{Standard error}})^2

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

Putting values, we get,

n = (1.96\times \dfrac{0.5(1-0.5)}{0.01})^2 = 9604

Thus, the sample size must be

Option A) 9604

8 0
3 years ago
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