They all are multiplied by 5. For example 5x3=15
Answer:
Ic² + b²l = 13 units.
Step-by-step explanation:
We have to evaluate the expression Ic² + b²l with unknowns b and c and having the values of b and c respectively - 3 and - 2.
Now, Ic² + b²l
= I(- 2)² + (- 3)²l {Putting the values of b and c}
= I4 + 9l
= I13l
= 13 units.
Therefore, Ic² + b²l = 13 units. (Answer)
To solve these, plug in the x values into the equations and solve for y.
For the first box, you would substitute x for -2:
y=2(-2)+5
y=-4+5
y=1
Just do the same thing for the rest of the boxes and you'll be good. In the last two boxes in the second problem, you can choose what you want x to be. Hope this helps.
Now we have to,
→ prove that 100 - [5 × (3 + 4)] = 65.
Let's solve the problem,
→ 100 - [5 × (3 + 4)] = 65
→ 100 - [5 × 7] = 65
→ 100 - 35 = 65
→ 65 = 65
→ LHS = RHS
Hence, proved the equation.
<h3>Given</h3>
- C(t) = 40 cm + t·(2/5 cm/s) . . . circumference of a circle vs time
<h3>Find</h3>
- dr/dt for radius r
- r at t=4 seconds
<h3>Solution</h3>
The circumference and radius of a circle are related by
... C = 2πr
so the radius in terms of circumference is
... r = C/(2π)
... r(t) = (40 +0.4t)/(2π) = (1/π)(20 cm + 0.2t cm/s)
Then dr/dt is
... dr/dt = 0.2/π cm/s
And the radius at t=4 s is
... r(4) = (1/π)(20 + 0.2·4) cm
... r(4) = 20.8/π cm