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Alex73 [517]
3 years ago
8

7x15÷3-2 put one set of brackets

Mathematics
2 answers:
Molodets [167]3 years ago
7 0
7(15\3-2) because GEMDAS OR PEMDAS



Lapatulllka [165]3 years ago
7 0
You would do 7x(15 divided by 3-2)
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The answers to these questions please
vfiekz [6]

Answer:

Q10 is 13.64 cm3

Q 11 is 221 cm3

Step-by-step explanation:

volume is cross sectional area times height for Q 10

volume is length times width times height for Q 11

5 0
3 years ago
The speed of light is approximately 299,000,000 meters per second.
jek_recluse [69]

Answer:

2.99 x 10⁸ meters per second

Step-by-step explanation:

Scientific notation (also called "Standard form") is written in the form of a \times 10^n, where  1\leq a < 10  and  n is any positive or negative whole number.

To <u>convert</u> a number into <u>scientific notation</u>, move the decimal point to the left or right until there is <u>one digit before the decimal point.</u>

The number of times you have moved the decimal point is the power of 10 (n).

If the decimal point has moved to the <u>left</u>, the power is <u>positive</u>.

If the decimal point has moved to the <u>right</u>, the power is <u>negative</u>.

<u>To convert the given number to scientific notation</u>

The decimal point for the given number 299000000 is after the last zero:

⇒  299000000.

Move the decimal point 8 places to the left:  

⇒ 2.99000000

Get rid of the redundant zeros:

⇒ 2.99

Multiply by 10 to the power of the number of decimal places moved:  

⇒ 2.99 x 10⁸

Therefore, the speed of light using scientific notation is:

  • 2.99 x 10⁸ meters per second
7 0
2 years ago
if a square has an area of 255 square yards and a perimeter of 60 yards what is the side length of the square
Marta_Voda [28]

Answer: 15, if area is supposed to be 225

Step-by-step explanation:

60 / 4 sides = 15

15*15= 225

8 0
3 years ago
A school ordered 5 boxes of paper. There were 28 sheets of paper in each box. How many sheets of paper did the school order in a
tatuchka [14]

Answer:

the answer is 140 pieces of paper

Step-by-step explanation:

6 0
2 years ago
2x + 3 = -x + 12 <br><br> Solve the equation, explanation is good.
raketka [301]

Answer:

3

Step-by-step explanation:

2x + 3 = -x + 12

subtract 3 from both sides

2x = - x + 9

add x to both sides

3x = 9

divide by 3

x = 3

7 0
2 years ago
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