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svetlana [45]
3 years ago
14

Find the sum of 0.2126 and 0.7145 correct to 3 significant figures​

Mathematics
1 answer:
Afina-wow [57]3 years ago
3 0

Answer:

0.927

Step-by-step explanation:

add then round the last digit (it doesnt matter if it is a decimal number or not).

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How do you add the fractions 5/6 and 3/6?
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5/6 + 3/6 = 8/6, you divide 6 into 8, and get 1 2/6, you can reduce that to 1 1/3

Sentence: one and one third 
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Jimmy know the route from his house to his school, and can name each street along the way.
lesantik [10]
A) Mental Map .......
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3 years ago
Identify the constant in the following expression 9x+7
Aleonysh [2.5K]

Answer:

7

Step-by-step explanation:

because it is the only number without a variable or something next to it.


3 0
3 years ago
Read 2 more answers
The sum of Sharon's and John's ages is . Sharon is times as old as John. If you let Sharon's age and John's age, then the proble
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Answer:

A

Step-by-step explanation:

Im pretty sure its A because

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55-60 is also 4 x 15  

6 0
3 years ago
Paces tacos sold 280 food items from its mobile unit only tacos $2 each and burritos $3 each where available it took $660 in sal
trapecia [35]

Answer:

180 tacos and 100 burritos was sold

Step-by-step explanation:

Let <em>t</em><em> </em>represent tacos

Let <em>b</em><em> </em>represent burritos

<em>t</em><em> </em>+ <em>b</em><em> </em>= 280

<em>2t</em><em> </em>+ <em>3b</em><em> </em><em>=</em><em> </em><em>660</em>

From t + b = 280,

t = 280 - b

Substitute t = 280 - b in 2t + 3b = 660

2t + 3b = 660

2(280 - b) + 3b = 660

560 - 2b + 3b = 660

560 + b = 660

b = 660 - 560

b = 100

Substitute b = 100 in t + b = 280

t + b = 280

t + 100 = 280

t = 280 - 100

t = 180

t = tacos = 180

b = burritos = 100

4 0
3 years ago
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