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cricket20 [7]
3 years ago
15

There were 36 balloons at the beginning of the party. By the end of the party, d of them popped. Using d, write an expression fo

r the number of balloons that were left
Mathematics
1 answer:
kap26 [50]3 years ago
6 0

Answer:

b=36-d

Step-by-step explanation:

b=balloons after being popped

d=balloons popped

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How large a sample must a pollster take in order to estimate with 95% confidence and to within 3 percentage points, the proporti
Ludmilka [50]
<h3>Answer:   1068</h3>

========================================================

Work Shown:

n = \hat{p}*(1-\hat{p})\left(\frac{z}{E}\right)^2\\\\n \approx 0.5*(1-0.5)\left(\frac{1.96}{0.03}\right)^2\\\\n \approx 1067.111\\\\n \approx \boldsymbol{1068}\\\\

Notes:

  • At 95% confidence, the z critical value is roughly z = 1.96 which is determined using a Z table.
  • E = 0.03 to represent the 3% error.
  • We're not told the value of \hat{p}, so we assume the most conservative estimate of 0.5
  • <u>Always</u> round up to the nearest integer. The value 1067.111 is closer to 1067, but we round up to 1068 to clear the hurdle needed.
4 0
2 years ago
27/17 is equal to: <br><br> A.1 7/17<br> B.1 10/17<br> C.2 7/17<br> D.1 7/10
iVinArrow [24]
The answer is B. First divide the numerator by the denominator which gives you 1 with a remainder of 10. The 1 is the whole number. The remainder of 10 will be the new numerator and the 17 as the dominator since it stays the same. And there is your answer:)
7 0
4 years ago
the cooking club made some pies to sell during lunch to raise money for a field trip the cafeteria helped by donating three pies
lutik1710 [3]

Answer:

9

Step-by-step explanation:

72 pieces divided by 6 pieces/pie = 12 pies

3 were donated by the cafeteria

thus 12-3 = 9 pies made by the club

6 0
3 years ago
In the plane figure shown below. if the degree measures of the angle are as shown, then x+y=
laila [671]
We know that

<span>the sum of the internal angles in the figure shown is 360 degrees
</span>so
360°=100°+60+70°+y+80°+x
360°=(x+y)+310°
(x+y)=360°-310°-----> 50°

the answer is
x+y is 50°
5 0
3 years ago
6 Trendy T-Shirts has decided to manufacture a new design. It will
Dima020 [189]

Answer:

A)

400+3x+5000=12x

5400 = 9x

x =600

B)

Profit: zero (break even)

Total cost or Income from 600 Sales: $7200

3 0
3 years ago
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