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Ivanshal [37]
3 years ago
6

Lena needs $50 to buy some notebooks. She had saved $2 and plans to work as a babysitter to earn $8 per hour.

Mathematics
1 answer:
____ [38]3 years ago
8 0
<span>2 + 8n ≤ 50, so n ≤ 6 </span>
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You walk 2 miles in 1/2 hour ate that rate , how long will it take to walk 3 miles
irina [24]

If you walk 2 miles in 1/2 an hour, each mile took 15 minutes to walk. Add one more mile and that equals 45 minutes.


It will take 45 minutes to walk 3 miles.

4 0
3 years ago
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Cory borrows $1,200 from the bank for riding lawn mower. The interest rate Is 8% per year. How much simple interest will he pay
rjkz [21]

Answer:

$1,392

Step-by-step explanation:

1,200(0.08)(2) = 192

1,200 + 192 = $1,392

5 0
3 years ago
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What are the zeros of the function y = x2 + 10x – 171, and why?
aleksandr82 [10.1K]
Y = x^2 + 10x - 171
y = (x - 9)(x + 19)

x - 9= 0 x + 19 = 0
x = 9 x = -19

Answer B covers all requirements... the factored form is
<span>y= (x + 19)(x - 9) </span>
<span>and the zeros are -19 and 9</span>
4 0
3 years ago
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Eric's class consists of 12 males and 16 females. If 3 students are selected at random, find the probability that they
Reptile [31]

Answer:

The probability that all are male of choosing '3' students

P(E) = 0.067 = 6.71%

Step-by-step explanation:

Let 'M' be the event of selecting males n(M) = 12

Number of ways of choosing 3 students From all males and females

n(M) = 28C_{3} = \frac{28!}{(28-3)!3!} =\frac{28 X 27 X 26}{3 X 2 X 1 } = 3,276

Number of ways of choosing 3 students From all males

n(M) = 12C_{3} = \frac{12!}{(12-3)!3!} =\frac{12 X 11 X 10}{3 X 2 X 1 } =220

The probability that all are male of choosing '3' students

P(E) = \frac{n(M)}{n(S)} = \frac{12 C_{3} }{28 C_{3} }

P(E) =  \frac{12 C_{3} }{28 C_{3} } = \frac{220}{3276}

P(E) = 0.067 = 6.71%

<u><em>Final answer</em></u>:-

The probability that all are male of choosing '3' students

P(E) = 0.067 = 6.71%

3 0
3 years ago
Can can someone help me with this I don’t know
Zarrin [17]

Answer:

29500

Step-by-step explanation:

subtract the two numbers

7 0
3 years ago
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