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Basile [38]
3 years ago
6

A grandmother says that her grandson is two years older than her granddaughter and that together they are at least 12 years old.

how old are her grandson and granddaughter?
Mathematics
1 answer:
HACTEHA [7]3 years ago
7 0

Answer:

her grandson would be 7 and her granddaughter would be 5.

Step-by-step explanation:

their ages together is 12. we divide that by the two grandchildren, and adjust it to where they are to years apart.

12÷2=6

6+6 + adjusted = 5 and 7.

to fact check 5+7=12, and 7 is two numbers above 5.

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Jamie has 6 coins. Each coin is either a penny or a nickel. How much money does Jamie have?
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He would have 6-30 cents


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Physicians at a clinic gave what they thought were drugs to 860 patients. Although the doctors later learned that the drugs were
Alexus [3.1K]

Answer:

Z=2.36

P=0.0091

Step-by-step explanation:

The hypothesis is:

π > 0.55 which is the population proportion

The formula to get the test statistic is

Zstat = P-π/√π(1-π)/n

P =507.4/860 = 0.59 (sample proportion )

n =860 (sample size)

π =0.55(population porportion)

Zstat = 0.59-0.55/√0.55(1-0.55)/860

Zstat =2.36

From Z table the probability of Z score of 2.36 is 0.9909

To calculate for P- value will then be

P= 1 - 0.9909

P= 0.0091

4 0
3 years ago
Can someone help me please
Nitella [24]

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The perimeter is the sum of the lengths

Add up the lengths as shown

3+2+1+2+3+1+1+3

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4 0
3 years ago
Divide. Write your answer using the smallest numbers possible.
Ilya [14]

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8 0
3 years ago
Juan ordered 20 pizzas for a party. 45% of the pizzas have 8 slices each. The remaining 55% of the pizzas have 12 slices each. C
Mama L [17]

Total number of pizzas Juan ordered 20

Since, 45\% of pizzas have 8 slices.

Therefore, number of pizzas with 8 slices are: 45\%\times(20)

                                                                                          =\frac{45}{100} \times(20)

                                                                                          =\frac{45}{10} \times(2)

                                                                                          =\frac{90}{10}

                                                                                          =9 pizzas


Also, since, 55\% of pizzas have 12 slices.

Therefore, number of pizzas with 12 slices are: 55\%\times(20)

                                                                                          =\frac{55}{100} \times(20)

                                                                                          =\frac{55}{10} \times(2)

                                                                                          =\frac{110}{10}

                                                                                          =11 pizzas


Now, there are 9 pizzas with 8 slices and 11 pizzas with 12 slices.

Therefore, total number of slices of pizza are: =(9)(8)+(11)(12)

                                                                            =72+132

                                                                            =204 slices

5 0
4 years ago
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