Answer:
<u>The sum of their ages now is 13</u>
Step-by-step explanation:
Dally's age = x
Dilly's age = x - 7
In 4 years time Dilly will be half Dally’s age, therefore:
Dilly's age plus four equals to half of Dally’s age plus four,
replacing with the values and variables we know:
x - 7 + 4 = (x + 4) /2
x - 3 = (x + 4) /2
2x - 6 = x + 4 (Multiplying by 2 at both sides)
2x - x = 4 + 6 (Like terms)
x = 10 ⇒ x - 7 = 3
<u>The sum of their ages now is 13 (10 + 3)</u>
34.I
for this problem you just multiply the 20 by 2=40
and then you add 40+3=43
which will equal
35.G
if you divide
so G
36. C
so if you subtract
will equal
Answer:
Step-by-step explanation:
Correct answer: y = x + 2
To find out the slope, you would need to remember this slope formula: . We can use the two points provided on the graph to figure out the slope. We can label (3, 3) as and , and (0, 2) as and . Now we can plug these numbers into the slope formula to find out the slope:
m = → → →
To find out the y-intercept, just substitute (3, 3) into the slope-intercept<em> </em>formula ( <em>y = mx + b</em> ) with the slope that is substituted for '<em>m</em>' that we already solved earlier.
y = mx + b
(3) = (3) + b
3 = 1 + b
2 = b
You can also prove this true by looking at the graph provided. The line intersects at the y-axis at 2.
Now we know that m = and b = 2, we can substitute it into the slope-intercept formula. Thus, the answer is y = x + 2.
Hope this helps you! Let me know if you have any more questions related to this problem.
Answer:
Step-by-step explanation: