Answer:
x=
2.6
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Answer:
4.397 * 10⁹
Step-by-step explanation:
(3.700 * 10⁹) + (6.970 * 10⁸) = (3.700 * 10 * 10⁸ ) + (6.970 * 10⁸)
= (37.00 * 10⁸) + (6.970 * 10⁸)
= (37.00 + 6.970) * 10⁸
= 43.97 * 10⁸
= 4.397 * 10 * 10⁸
= 4.397 * 10⁽¹⁺⁸⁾
= 4.397 * 10⁹
Answer:Option (ii) is correct i.e. 20mph and 24mph
Step-by-step explanation:
Let us assume that the two riders are A and B
A B
Let speed of A be v mph then speed of B will be (v+4)mph
Time taken by A =3h Time taken by B=3-0.5= 2.5h
Since distance travelled by both is the same
Distance=![Speed\times Time](https://tex.z-dn.net/?f=Speed%5Ctimes%20Time)
![3\times v=2.5\times(v+4)](https://tex.z-dn.net/?f=3%5Ctimes%20v%3D2.5%5Ctimes%28v%2B4%29)
![3 \times v=2.5\times v+10](https://tex.z-dn.net/?f=3%20%5Ctimes%20v%3D2.5%5Ctimes%20v%2B10)
![3\times v-2.5\times v=10](https://tex.z-dn.net/?f=3%5Ctimes%20v-2.5%5Ctimes%20v%3D10)
![0.5\times v=10](https://tex.z-dn.net/?f=0.5%5Ctimes%20v%3D10)
Dividing both sides by 0.5
v=![\frac{10}{0.5}](https://tex.z-dn.net/?f=%5Cfrac%7B10%7D%7B0.5%7D)
mph
i.e Speed of A=20mph
∴ Speed of B=20+4 =24mph
180 ÷ 1.5 = 120
Check your answer - 120 × 1.5 = 180
Final answer: 120 miles.
Reduce the expression 184 by cancelling the common factors. Factor 2 2 out of 18 18 . Factor 2 2 out of 4 4 . Rewrite the expression.Answer:
Step-by-step explanation: