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galben [10]
3 years ago
11

Maya is taking her friends to a concert. Each ticket costs $25, and souvenir T-shirts are $12 each. There is a $4 service fee fo

r the entire purchase. She has $130. If she buys 3 tickets, how many T-shirts can she buy? If x = number of tickets and y = number of T-shirts, which of the following inequalities could you use to answer the problem?
a. 25x+12y 130
b. 25x+12y+4 130
c. 25x+12y+4 130
d. x+y < 130
Mathematics
1 answer:
taurus [48]3 years ago
4 0
I would go with B


Because all an inequality is:
 
you doing the opposite to get the answer.
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Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p: n = 195,
Troyanec [42]

Answer:

c. 0.778 < p < 0.883.

Step-by-step explanation:

The formula for confidence interval for proportion =

p ± z score × √p(1 - p)/n

p = x/n

n = 195, x = 162

z score for 95% confidence Interval = 1.96

p = 162/195

p = 0.8307692308

p ≈ approximately equal to = 0.8308

0.8308 ± 1.96 × √0.8308 × (1 - 0.8308)/195

0.8308 ± 1.96 ×√0.8308 × 0.1692/195

0.8308 ± 1.96 × √0.0007208788

0.8308 ± 1.96 × 0.0268491862

0.8308 ± 0.052624405

Confidence Interval

= 0.8308 - 0.052624405

= 0.778175595

Approximately = 0.778

= 0.8308 + 0.052624405

= 0.883424405

Approximately = p

0.883

Therefore, the confidence interval for this proportion = (0.778, 0.883) or option c. 0.778 < p < 0.883

6 0
3 years ago
What is 1 6/9 +5 9/7
lisabon 2012 [21]

\longrightarrow{\green{7  \frac{20}{21}}} 

\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}

1 \frac{6}{9}  + 5  \frac{9}{7}  \\   \\ =  \frac{15}{9}  +  \frac{44}{7}  \\  \\  =  \frac{15 \times 7}{9 \times 7}  +  \frac{44 \times 9}{7 \times 9}  \\  \\  =  \frac{105 + 396}{63}  \\  \\  =   \frac{501}{63}  \\  \\  =  \frac{167}{21}  \\  \\  = 7  \frac{20}{21}

\large\mathfrak{{\pmb{\underline{\orange{Mystique35 }}{\orange{♡}}}}}

6 0
3 years ago
Can someone please help I need the answer ASAP
Sholpan [36]

do you have a clearer picture please? I can help :))

6 0
3 years ago
73/12 as a mixed number
taurus [48]
<span>73/12 = 6 1/12

hope it helps</span>
8 0
3 years ago
Read 2 more answers
There are 120 planes. 2/3 are parked. 2/5 are jets and 1/8 are ready for take off. What fraction of the total are not jets
GuDViN [60]

Answer:

41/120

2/3 of 120 is 80, you have 40 left

2/5 of 40 is 16, you have 24 left

1/8 of 24 is 3.

Subtract those totals and you will get 41 leftover.

4 0
3 years ago
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