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Charra [1.4K]
2 years ago
14

What is the value of (x^3 − 7x^2 − 18x + 42) when x = 3?

Mathematics
1 answer:
Eva8 [605]2 years ago
8 0

Answer:

-150

Step-by-step explanation:

x^2 - 7x^2 - 18x +42

3^2 - 7(3)^2 - 18(3) + 42

9 - 63 - 54 + 42

-54 -54 + 42

-108 + 42

-150

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What net force will make a 5 kg bowling ball accelerate by 1.5 m/s square 2?
s2008m [1.1K]

In pure translation or in roll without slip?

In pure translation, just use Fnet = m*a.  Fnet = 7.5 Newtons

In roll without slip it has effectively more inertia than 5 kilograms.  The effective inertia can be found as:

m_effective = m + I/r^2

For a uniform solid sphere, I = 2/5*m*r^2

So m_effective = 7/5*m

To make a 5 kg bowling ball accelerate at 1.5 m/s^2 in roll without slip, it requires Fnet = 10.5 Newtons, and this ASSUMES that all forces causing the net force on it have lines of action through its center of mass (most common case).

i hope this is what ur looking for

3 0
2 years ago
Arrange in ascending order<br> a) 2⁄5, -1⁄6, -11/30
nikitadnepr [17]

Answer:

-11/30, -1/6, 2/5

Step-by-step explanation:

first, make the question in the same denominator

= 12/30, -5/30, -11/30

= -11/30, -5/30, 12/30

= -11/30, -1/6, 2/5

8 0
2 years ago
Write a linear function f with the values f(0)=−3 and f(7)=11<br><br> A function is f(x)=
kotegsom [21]
F(x)= 2x-3
f(0)=2•0-3=0-3=-3 ✔️
f(7)=2•7-3=14-3=11 ✔️
4 0
2 years ago
If (fx)=25-x^ and (gx)=x+5 what is f/g (x)
Zina [86]
F(x) is 25-x^
But x is being squared, cubed or what. What is the exponent of x.
3 0
3 years ago
Q5 Q31.) Use the Pythagorean Theorem to find the length of the missing side of the right triangle. Then find the value of each o
Neporo4naja [7]

a^2 + b^2 = c^2

a = sqrt(c^2 - b^2) = sqrt (20^2 - 16^2)

= 12

sin\theta = a/c = 12/20

= 3/5

cos\theta = b/c = 16/20

= 4/5

tan\theta = a/b = 12/16

= 3/4

csc\pi = c/a = 20/12

= 5/3

= 1 2/3

sec\pi = c/b = 20/16

= 5/4

= 1 1/4


4 0
2 years ago
Read 2 more answers
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