Answer:
16/13
Step-by-step explanation:
the error is when it was divided, one of the fractions should be reversed to be multiplied
<u> </u><u>4</u><u> </u><u> </u> ÷ <u> </u><u>1</u><u>3</u><u> </u>
7. 28
<u> </u><u>4</u><u> </u> × <u>2</u><u>8</u><u> </u> ,like this
7. 13
= <u> </u><u>1</u><u>1</u><u>2</u><u> </u> ,divide both by 7
91
= <u> </u><u>1</u><u>6</u><u> </u>
13
Answer: 31.43 cm
Step-by-step explanation:
The length of an arc is calculated using the formula:
X 2
r
where : theta is the angle in degree
r = radius
If the angle is given in Radian , the length can be calculated using the formula:
L = r∅
Since , the angle is given in degree , we will use the first formula.
L =
X 2
r
L =
X 2 X π X 15
L =
X 2 X
X 15
L = 
L = 31.42857143
L ≈ 31.43 cm
Answer:
Step-by-step explanation:
we have 105 marbles
number of blue marbles= x
green marbles= x+25
x+x+25=105
2x=105-25
2x=80
x=40 blue marbles
Answer:
A: 1/26
B: 1/50
Step-by-step explanation:
used a calc