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Stels [109]
3 years ago
13

(-10) - (-4) • [(-3) - {(-9) + (-4)}]

Mathematics
1 answer:
irakobra [83]3 years ago
3 0
<span>(-10) - (-4) • [(-3) - {(-9) + (-4)}]
</span>(-10) - (-4) •[(-3) - {(-13)}]
<span>(-10) - (-4) •[(-3) +13]
</span><span>(-10) + 4 • 10
</span><span>(-10) + 40
30
the answer is 30</span>
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Write the decomposition that helps you, and then round to the given place value. Draw number lines to explain your thinking. Cir
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Further explanation

There are general rules used in rounding numbers

1. Determine the rounded digit

2. Pay attention to the digits afterward (right). If the digit shows the numbers 0, 1, 2, 3 or 4, then the digit to be rounded is fixed, and the digit on the right is 0 all

3. If the digit on the right shows the numbers 5, 6, 7, 8 or 9, then the digit to be rounded is added to one, and the digit on the right side is made all 0

In rounding the nearest hundreds number, then we see the digit in the number tens (right of the digit hundreds), if it is worth 0, 1, 2, 3 or 4, then it remains, but if it shows numbers 5, 6, 7, 8 or 9, then the digit to be rounded is added one, and the right-hand side is 0

Calculated from the decimal point, the place on the right represents tents, hundredths, thousandths, etc.

a.  32.697

Decomposition

ten : 3

one : 2

tenth : 6

hundredth : 9

thousandths : 7

For the tenth number is 6, the value on the right is 9 then rounded become 32.7

For the hundredth number is 9, the value on the right is 7 then rounded become 32.70

for the one number is 2 , the value on the right is 6 then rounded become 33

b. 141.999

Decomposition

hundred : 1

ten : 4

one : 1

tenth : 9

hundredth : 9

thousandths : 9

a. For the tenth number is 9, the value on the right is 9 then rounded become 142.0

For the hundredth number is 9, the value on the right is 9 then rounded become 142.00

For the ten number is 4, the value on the right is 1 then rounded become

14

For the ten number is 1, the value on the right is 4 then rounded become

142

<h3>Learn more </h3>

five numbers that are round up and round down to 600

brainly.com/question/258166

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Keywords: round up, round down, the rounded digit

7 0
3 years ago
Why does it make sense to use 660 and 60 to estimate the quotient
Alexxx [7]
What the qoutient sweetheart
5 0
3 years ago
1/4 plus 1/6 in simplest terms
Tasya [4]

Answer:

\frac{5}{12}

Step-by-step explanation:

\frac{1}{4}+\frac{1}{6}\\\\=\frac{3}{12}+\frac{2}{12}\\\\=\frac{5}{12}

7 0
2 years ago
Read 2 more answers
If 3 centimeters is equal to 30 millimeters, how many centimeters are in 140 millimeters?
harina [27]

Answer:

14

Step-by-step explanation:

divide by 10

3 0
3 years ago
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At a university, 12% of students smoke. Calculate the expected number of smokers in a random sample of 140 students from this un
Masteriza [31]

Answer:

a) The expected number of smokers in a random sample of 140 students from this university is 16.8 smokers.

b) No, it is unlikely that smoking habits and waking up early to go to the gym on Saturday are independent.

Step-by-step explanation:

To calculate the expected numbers of smokers in a sample with size n=140 and proportion p=12%, we use the expected value of the binomial distribution:

E(x)=n\cdot p=140\cdot 0.12=16.8

The expected number of smokers in a random sample of 140 students from this university is 16.8 smokers.

If we take a sample at the opening of the gym, the sample is not expected to be representative of the population of the students. Most of the students that go to the gym usually have healthy habits, so the proportions of smokers is expected to be lower than the average of the university population.

4 0
3 years ago
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