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olga2289 [7]
3 years ago
15

171

Mathematics
1 answer:
sdas [7]3 years ago
6 0

Answer:

21

Step-by-step explanation:

You might be interested in
When Tomas simplified the expression -2.6 + (-5.4), he got 2.8. what mistake did Tomas likely make?
vladimir2022 [97]

Tomas used incorrectly the rule of signs, the expression should be simplified as follows:

-2.6 + (-5.4)

-2.6 -5.4 = 8

<h3></h3><h3>What mistake did Tomas likely make?</h3>

Here Tomas wants to perform an addition between two numbers:

-2.6 + (-5.4)

And the outcome that Tomas gets is:

-2.6 + (-5.4) = 2.8

Here his mistake seems to bee that he thought the second number was a positive number, and he solved the operation:

-2.6 + 5.4

So, he used wrong the rule of signs.

Remember that the rule of signs says that:

(-)*(+) = (+)*(-) = (-)

Using that, we can rewrite the original expression:

-2.6 + (-5.4)

to:

-2.6 - 5.4

Solving that, we get:

-2.6 - 5.4 = -8

Which is the outcome that Tomas would have gotten if he had used correctly the rule of signs.

If you want to learn more about the rule of signs:

brainly.com/question/13333620

#SPJ1

5 0
2 years ago
Convert 19/20 to a percent.
liraira [26]
95% is the answer you're looking for
5 0
3 years ago
Read 2 more answers
First right answer for both gets brain
Katena32 [7]
D. He made 55 snacks
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3 years ago
Students were surveyed to find out the most popular pizza topping. According to the bar graph, how many students were
Darya [45]

Answer: 44

Step-by-step explanation:

Add the number of people whom answered in each pizza topping section

5 0
4 years ago
How do I do the square root of 8 squared?​
Yanka [14]
First, find out what 8^2 is.
(Answer = 64)

Then, find the square root of 64.
(Answer = 8)
8 0
3 years ago
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