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GenaCL600 [577]
3 years ago
11

Round to the place value of the underlined digit 862, 840. The 6 in 862,840

Mathematics
1 answer:
liq [111]3 years ago
6 0

Answer:

860,000

Step-by-step explanation: 2 is less than 5 so you would round down

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The average age of 4 children is 15 yrs . if the ages of their parents are added , their average age is 25 .find the age of thei
WITCHER [35]

The age of the father is 57 years old

<h3>Calculating mean of a population</h3>

Total age = Average age x Population

Average of the four children = 15

Population = 4

Total age of the four children = 15 x 4

Total age of the four children = 60 years

If the parents are added:

Population = 6

Average age = 25

Total age = 25 x 6

Total age = 150 years

Total age of the parents = 150 - 60

Total age of the parents = 110 years

The father is 4 years older than his wife

Let the age of the father be x

The age of the wife = x - 4

x + x - 4 = 110

2x = 114

x = 114/2

x = 57

Therefore, the age of the father is 57 years old

Learn more on The mean of numbers here: brainly.com/question/20118982

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6 0
2 years ago
(-3+7i)(1-2i) can you help me with the answer to this
lozanna [386]

Answer:

11 + 13i

Step-by-step explanation:

A must know is that

\sqrt{i}  =  - 1

Complex numbers

1st: foil the equations

- 3(1 - 2i) + 7i(1 - 2i)

- 3 + 6i + 7i- 14 {i}^{2}

2nd Combine like terms and substitute

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4 0
2 years ago
4a + (–6b) – 3a + 2b factor the expression
Gemiola [76]

Answer:

a−4b

Step-by-step explanation:

Combine Like Terms:

=4a+−6b+−3a+2b

=(4a+−3a)+(−6b+2b)

=a+−4b

have a great day

5 0
3 years ago
Which statement must be true according to the box plot? The data is symmetric, and the lowest number of crackers in a package wa
LUCKY_DIMON [66]

Answer:

C

Step-by-step explanation:

The data is skewed, and the lowest number of crackers in a package was 7

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3 years ago
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30 m

Step-by-step explanation:

7 0
3 years ago
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