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iren [92.7K]
3 years ago
10

I need help with all these questions

Mathematics
1 answer:
yKpoI14uk [10]3 years ago
8 0

Answer:

Step-by-step explanation:

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Suppose you are asked to find the area of a rectangle that is 2.1-cmcm wide by 5.6-cmcm long. Your calculator answer would be 11
Jlenok [28]

Answer:

12 square cm correct to 2 significant figures

Step-by-step explanation:

Area of a Rectangle = L X B = 2.1 X 5.6 = 11.76 square cm

To round your result to 2 significant figure, we start counting from the left from the first non-zero digit.

The first two digits are 11 but because the number after is 7 (greater than 4), we round up to 12.

11.76 square cm = 12 square cm correct to 2 significant figures

6 0
3 years ago
Ginny has 16 chocolate bars. She gives away ¾ of her chocolate bars to friends. How many chocolate bars did Ginny give away?
Phantasy [73]

Answer:

She gave away 12, so she still has 4.

Step-by-step explanation:

16 times .75 equals 12.

6 0
3 years ago
Read 2 more answers
Use math vocabulary to explain why you think this number does not belong in the group. Be sure to write in complete sentences.
NISA [10]

Answer:

because like for example the given number are 01 12

23 34

or 12233445566778 and etc.

your situation are 4556 and 3224 because are not ordered pair

8 0
3 years ago
You spend $16 on 3 notebooks and x binders . Notebooks cost $2 each and binders cost $5 each. Write an equation you can use to f
Firlakuza [10]

Answer:

Step-by-step explanation:

Write the equation as:

Price of books times number of books + price of binders times number of binders = total price

So then the final answer is 3(2)+5(x)=16

4 0
3 years ago
A circular pool is 3.5 meters deep and has a radius of 9 meters. What is the volume
mote1985 [20]

Answer:

890.75m^3

Step-by-step explanation:

Step one:

given data

heigth/depth = 3.5m

radius= 9m

Step two:

The shape is that of a cylinder

Hence the volume of the pool is

V= \pi r^2h

substitute

V= 3.142*9^2*3.5\\\\V=890.75 m^3

7 0
3 years ago
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