The Family This problem gives you the chance to:
• use reasoning to solve a problem
This question is about five of the people in the four generations of a family, a married couple with a
baby, a grandmother and a great grandfather. The five people are A, B, C, D and E.
The total of their ages
is 207 years
E is the
grandmother
C is married to B
E was 26 when her
son was born
Dis 45 times as old as A
When A was born his
mother was 25
E is 30 years older than B
Use the information to find who is who and how old they are.
Chow how you ſigured it out.

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

i think its a and d

step-by-step explanation:

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

happy to

pls mark as brainliest