I believe it's 6/12, but simplified to the lowest form is 1/2
To answer this, we need to first find the rate and the multiply it by 3. 840/12 = 70 miles per hour. Then multiply it by 3. 70*3=210 miles. Another way we can do it is that we can divide 840 by 4 because 12 hours / 4 = 3 hours. 840/4 = 210 miles.
Answer:
{15 - {(25 x 2.4) + 7}}- (3 x 2) = -16
Step-by-step explanation:
15 - 25 x 2.4 + 7 - 3 x 2= -16 is the given equation.
Now by the rule of BODMAS:
here B = Bracket, O means Of, D means Divide, M means Multiplication , A means Addition and S means Subtraction.
So, according to this order start putting brackets.
first operation is multiplication, second is addition and then subtraction.
⇒ 15 - 25 x 2.4 + 7 - 3 x 2 = {15 - {(25 x 2.4) + 7}}- (3 x 2)
Hence, {15 - {(25 x 2.4) + 7}}- (3 x 2) = -16
Step-by-step explanation:
This is a word problem that we must translate to mathematical expression before we can solve.
let the individual saving be the first letters of the names
Jada= J
Lin= L
Elena= E
1. Jada saved $20 less than Lin
J=L-20
2. Lin saved 3 times as much money as Elena
L= 3E
3. Hence Elena saved
E
Together they saved $120.
hence
(L-20)+3E+E= 120
L-20+3E+E= 120
collecting like terms we hav
L+4E=120+20
L+4E= 140
but we know that L= 3E
3E+4E= 140
7E= 140
divide both sides by 7 we have
E= 140/7
E= $20
This means Elena saves $70
also L= 3E
L= 3*20
L= $60
this means that Lean saved $60
also J=L-20
J= 60-20
J= $40
This means that Jada saved $40
ANSWER
The difference is,
EXPLANATION
To find the difference, we just have to simplify the expression.
The given expression is
We factor the denominator of the second fraction to get,
We can now see clearly that the LCM is
We collect LCM to get,
We now expand the bracket to obtain,
This gives us,
