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Eva8 [605]
4 years ago
12

What is the answer to 42-(2+-5)

Mathematics
2 answers:
ollegr [7]4 years ago
7 0

Answer:

2+5=7 then do 42-7

Step-by-step explanation:

when a second question is in brackets do that first and the answer to that is number you subtract or add  

Nesterboy [21]4 years ago
6 0
The answer is 210 hope this helps
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It is important to conduct multiple trials because _____.
Lubov Fominskaja [6]

Answer:

B. it makes your results more convincing

Step-by-step explanation:

A scientific experiment involves the replication and repetition of the experiment. Repetition or conducting the multiple trials of the experiment is very crucial for a scientific experiment.

The experiment is performed to understand and explain the natural phenomenon and the repetition of the experiment ensures that the results obtained from these trials are efficient either to support the hypothesis or to disprove the hypothesis.

Experimenting with multiple trials removes the chances of errors in the experiment, increases the efficiency and strengthens the results to prove or disprove the hypothesis. In other terms, it can be said that it makes the results more convincing.

Thus, Option-B is the correct answer.

7 0
3 years ago
The measure of each angles
Aleks [24]
Supplementary angles is when 2 angles add up to 180 degrees.

We will name the smaller angle a and the bigger angle b.

therefore:

b - 172.6 = a

a + b = 180

Now we substitute:

a + b = 180
b - 172.6 + b = 180
2b - 172.6 = 180
2b = 352.6
b = 176.3

To find a:

a + b = 180
a + 176.3 = 180
a = 3.7

Therefore,

angle a = 3.7 degrees
angle b = 176.3 degrees.

Hope it helps and have a great day ahead
4 0
4 years ago
A rectangle is 3 yards long and į yards wide . What is the area of the rectangle? Enter your answer as a fraction in simplest fo
sergij07 [2.7K]

Answer:

the area is 3i as a fraction would be 3i/1

Step-by-step explanation:

Thanks

7 0
3 years ago
Which of the following is a healthy blood pressure level?
elena-s [515]
The correct answer is choice C
5 0
4 years ago
Read 2 more answers
What would this be? Question is in the picture below.
PtichkaEL [24]
False. Both answers are 7. So they are equal
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3 years ago
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