Answer:
Step-by-step explanation:
66/1
Answer:
118.99
Step-by-step explanation: 15% off so you're only gonna pay 85% of 139.99. so 139.99 times 85% is 118.99
Answer:
Beryllium, 2 times
Step-by-step explanation:
1.12×10⁻¹⁰ has a higher exponent than 5.6×10⁻¹¹.
-10 > -11
The ratio between them is:
(1.12×10⁻¹⁰) / (5.6×10⁻¹¹)
(1.12 / 5.6) (10⁻¹⁰ / 10⁻¹¹)
0.2 × 10¹
2
Answer:
2a is equal to 10.
Step-by-step explanation:
You can find out what a is by dividing both sides by the number that a's being multiplied by. So we need to divide both sides of the equation by 3:
3a = 15
3a ÷ 3 = 15 ÷ 3
a = 5
So we know that a is equal to five. 2a then, is just 2 × a:
2a
= 2 × a
= 2 × 5
= 10