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PtichkaEL [24]
3 years ago
8

Select the correct answer. Graham puts $20 in his piggy bank every week. At the end of 39 weeks, he adds $100 to the piggy bank

money and decides to do the following: buy some clothes and sports gear for $314.23 buy his mom a present for $123 divide the rest of the money equally among his three brothers Use a calculator to find the amount of money each brother will get.
Mathematics
2 answers:
Masteriza [31]3 years ago
8 0

20*39 = 780

780+100 = 880

880-314.23-123 = 442.77

442.77/3

$147.59 each brother
tangare [24]3 years ago
6 0
First calculation :20 x 39 = $780
then, 780 + 100 = $880
minus with price of the clothes 880 - 314.23 = $565.77
minus the answer with his mom's present price 565.77- 123= 319.77
divide the answer by 3... 319.77/3 = $106.59
final answer =$106.59
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What is the greatest common factor of 14 56 63?
olga55 [171]
14: 1 × 14
      2 × 7

56: 1 × 56
      2 × 28
      4 × 14
      7 × 8

63: 1 × 63
      3 × 21
      7 × 9
GCF(14, 56, 63) = 7
6 0
3 years ago
A survey of an urban university (population of 25,450) showed that 870 of 1,100 students sampled supported a fee increase to fun
Katen [24]

Answer:

95% confidence interval for the proportion of students supporting the fee increase is [0.767, 0.815]. Option C

Step-by-step explanation:

The confidence interval for a proportion is given as [p +/- margin of error (E)]

p is sample proportion = 870/1,100 = 0.791

n is sample size = 1,100

confidence level (C) = 95% = 0.95

significance level = 1 - C = 1 - 0.95 = 0.05 = 5%

critical value (z) at 5% significance level is 1.96.

E = z × sqrt[p(1-p) ÷ n] = 1.96 × sqrt[0.791(1-0.791) ÷ 1,100] = 1.96 × 0.0123 = 0.024

Lower limit of proportion = p - E = 0.791 - 0.024 = 0.767

Upper limit of proportion = p + E = 0.791 + 0.024 = 0.815

95% confidence interval for the proportion of students supporting the fee increase is between a lower limit of 0.767 and an upper limit of 0.815.

5 0
2 years ago
Based on the diagram select all that apply.
Sveta_85 [38]

Answer:

E

Step-by-step explanation:

I just think so. Maybe it's right

4 0
2 years ago
Help me please
barxatty [35]

Answer: A

Step-by-step explanation:

7 0
1 year ago
She wants to create a rectangular area of 1,600 square feet for her pet and can afford to purchase 160 feet of fence. In two or
kap26 [50]

Answer: x = 40  and  y = 40

Step-by-step explanation:

We can write the equation for the area as: x*y = 1600

We can write the equation for the perimeter as: 2x + 2y = 160

An easy way to solve a question like this is to graph both equations on a graphing calculator, if you don't have one on you you can use Desmos

Graph both: y = 1600/x

                             and

                     y =  80 - x

Turns out you get x = 40 and y = 40

8 0
2 years ago
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