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lord [1]
2 years ago
8

Justin is 2 years older than one-third Marissa's age Amy is 4 years older than two times Justin's age then find Justin's age and

Amy's age of course it is 63 years old
Mathematics
2 answers:
Lana71 [14]2 years ago
6 0
Yes I am pretty sure
Molodets [167]2 years ago
4 0
Justin=j
Marissa=m
Amy=a

j=2+1/3m
a=4+2j
<span>a=63

63=4+2(2+1/3m)
63=4+4+2/3m
55=2/3m
(55)3=(2/3m)3
165=2m
82.5=m
63=4+4+2/3(82.5)
63=8+55
63=63


j=2+2/3(82.5)
j=2+55
j=57
57=2+2/3(82.5)
57=57</span>
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Fill in the table using this function rule.<br> y = 6x + 5
ddd [48]

Answer:

x=3, y=23

x=6, y=41

x=8, y=53

x=9, y=59

Step-by-step explanation:

x=3, y=6(3)+5

        y=18+5

        y= 23

x=6, y=6(6)+5

       y=36+5

       y= 41

x=8, y=6(8)+5

       y=48+5

       y=53

x=9, y=6(9)+5

       y=54+5

       y=59

8 0
2 years ago
Evaluate the integral. (sec2(t) i t(t2 1)8 j t7 ln(t) k) dt
polet [3.4K]

If you're just integrating a vector-valued function, you just integrate each component:

\displaystyle\int(\sec^2t\,\hat\imath+t(t^2-1)^8\,\hat\jmath+t^7\ln t\,\hat k)\,\mathrm dt

=\displaystyle\left(\int\sec^2t\,\mathrm dt\right)\hat\imath+\left(\int t(t^2-1)^8\,\mathrm dt\right)\hat\jmath+\left(\int t^7\ln t\,\mathrm dt\right)\hat k

The first integral is trivial since (\tan t)'=\sec^2t.

The second can be done by substituting u=t^2-1:

u=t^2-1\implies\mathrm du=2t\,\mathrm dt\implies\displaystyle\frac12\int u^8\,\mathrm du=\frac1{18}(t^2-1)^9+C

The third can be found by integrating by parts:

u=\ln t\implies\mathrm du=\dfrac{\mathrm dt}t

\mathrm dv=t^7\,\mathrm dt\implies v=\dfrac18t^8

\displaystyle\int t^7\ln t\,\mathrm dt=\frac18t^8\ln t-\frac18\int t^7\,\mathrm dt=\frac18t^8\ln t-\frac1{64}t^8+C

8 0
3 years ago
The easiest way to find THE SLOPE on a graph? Please HELP
ratelena [41]

Step-by-step explanation:

Pick two points on the line and determine their coordinates

Select one to be (x1, y1) and the other to be (x2, y2)

Finally use the slope intersect equation to calculate the slope:

<em>Formula-</em><em> </em>

<em>y = mx + b </em>

<em></em>

Hope this helps, let me know if you need more information, I'll be glad to help! :)

3 0
3 years ago
What is the value of y
kari74 [83]

Answer:

y= -6

Step-by-step explanation:

-2y - 5y= -7y

-7y=42

42/-7=

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5 0
2 years ago
Given f(x)=x-7 and h(x)=2x+3 what is the rule for h(f(x))
Paul [167]

Answer:

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To evaluate h(f(x)) substitute x = f(x) into h(x)

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6 0
3 years ago
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