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love history [14]
3 years ago
10

Find the sum when the addends have been rounded to the nearest 10. 29 + 43

Mathematics
2 answers:
astra-53 [7]3 years ago
4 0
I think it’s 70 because the original answer is 72 but needs to be rounded so possibly 70
Colt1911 [192]3 years ago
3 0
Answer: 70. Explanation: 29 rounded to the nearest tens is 30, and 43 rounded to the nearest tens is 40. Thirty plus forty is equal to seventy.
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What is the result when the number 20 is decreased by 75%?\
Viefleur [7K]

Answer:

5

Step-by-step explanation:

If 20 is <em>decreased </em>by 75%, you would have to do 20×0.25 because 1.00-0.75= 0.25. Therefore, the answer to your question would be 5.

Hope this was helpful!!!

8 0
3 years ago
Help Plzzz!<br> Convert 122lbs to Kilograms and plz show how you got the answer!!!!!!
PolarNik [594]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
The depth of a lake in Lexington changes over time due to rainfall and evaporation. A few months ago, the depth was 1,300 feet.
SVETLANKA909090 [29]

Answer:

The Depth of the lake had increased by 19%.

Step-by-step explanation:

Given:

Depth of lake few months ago = 1300 ft

depth of lake currently = 1547 ft

We need to find the percent of increase in depth of lake.

Solution:

First we will find the increase in depth of lake.

Increase in depth of lake can be calculated by subtracting Depth of lake few months ago from depth of lake currently.

framing in equation form we get;

increase in depth of lake = 1547-1300= 247\ ft

Now to find the percent of increase in depth of lake we will divide  increase in depth of lake from Depth of lake few months ago and then multiply by 100.

framing in equation form we get;

percent of increase in depth of lake = \frac{247}{1300}\times 100 =  19\%

Hence the Depth of the lake had increased by 19%.

6 0
4 years ago
A bag contains only black marbles and white marbles . Ezra reached into the bag without looking , got 30 marbles , and found tha
Keith_Richards [23]
2/5

Since 12 out of 30 marbles were black, you can assume that the percentage of black marbles in the bag is 40% (Ex: 12/30=.4) The probability that the marble you pick is black is equal to the percentage of black marbles in the bag. 40% is equal to 2/5.
6 0
3 years ago
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Kelsey had $65 to spend on books. Each book cost $5.50, and there was a $7.50 fee for shipping. She let b equal the number of bo
xeze [42]

Answer: Kelsey had $65 to spend on books. Each book cost $5.50, and there was a $7.50 fee for shipping. She let b equal the number of books she can purchase

Step-by-step explanation:

3 0
2 years ago
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