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Goryan [66]
2 years ago
12

Find the perimeter ...................

Mathematics
1 answer:
Harlamova29_29 [7]2 years ago
6 0

Answer:

58 inches

Step-by-step explanation:

15+12=27+14=41+9=50+8=58

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Find f(g(x)) and g(f(x)) 1. F(x) = X²-3x+1 g(x)=5x-7
Mariana [72]

We are given the following functions

\begin{gathered} f(x)=x^2-3x+1 \\ g(x)=5x-7 \end{gathered}

Let us first find f(g(x)

Substitute x = 5x - 1 into the function f(x) and simplify

\begin{gathered} f(g(x))=(5x-7)^2-3(5x-7)+1 \\ f(g(x))=(25x^2-2\cdot5x\cdot7+49)^{}-15x+21+1 \\ f(g(x))=25x^2-70x+49^{}-15x+22 \\ f(g(x))=25x^2-70x-15x+49+22 \\ f(g(x))=25x^2-85x+71 \end{gathered}

Now let us find g(f(x))

Substitute x = x² - 3x + 1 into the function g(x) and simplify

\begin{gathered} g(f(x))=5(x^2-3x+1)-7 \\ g(f(x))=5x^2-15x+5-7 \\ g(f(x))=5x^2-15x-2 \end{gathered}

Therefore, f(g(x) and g(f(x)) are

\begin{gathered} f(g(x))=25x^2-85x+71 \\ g(f(x))=5x^2-15x-2 \end{gathered}

5 0
1 year ago
In a survey of 50 students, 60% of them chose math as their favorite subject. How many students chose math? A.20 B.40 C.15 D.30
nata0808 [166]

Answer:

D- 30

Step-by-step explanation:

Total = 50

Percentage= 60%

No : of choose maths = 60/ 100 x 50  = 30      

Hope its right!

5 0
3 years ago
Find X<br><br><br> 17.52(32x) =9(10.43)
aivan3 [116]

Answer:

x ≈ 0.17

Step-by-step explanation:

17.52(32x) =9(10.43)

Isolate the variable by dividing each side by factors that dont contain the variable.

the answer is x ≈ 0.16743364

rounded down it is x ≈ 0.17

7 0
4 years ago
Find the volume of the sphere. <br> Either enter an exact answer in terms π or use 3.14 for π
Lunna [17]

The equation for volume of a sphere is (4/3)(pi)(r)^3. So you would plug in he radius 9 into the equation. It would simplify to equal (4/3)(pi)(729). It simplifies further to equal (972)(pi)

6 0
4 years ago
1. a. A cube’s volume is 512 cubic units. What is the length of its edge?
Vanyuwa [196]

Answer:

a) The length of its edge is 8 units.

b) The volume of the sphere is approximately 268.083 cubic units.

c) The fraction of the cube that is taken up by the sphere is 0.524, whose equivalent in percentage form is 52.4 %.

Step-by-step explanation:

a) The volume of a cube (V_{c}), measured in cubic units, is defined by the following expression:

V_{c} = L^{3} (1)

Where L is the side length of the cube, measured in units.

If we know that V_{c} = 512\,u^{3}, then the length of its edge is:

L = \sqrt[3]{V_{c}}

L = 8\,u

The length of its edge is 8 units.

b) The volume of a sphere (V_{s}), measured in cubic units, that fits snugly inside this cube is defined by:

V_{s} = \frac{\pi}{6}\cdot L^{3} (2)

If we know that L = 8\,u, then the volume of the sphere is:

V_{s} \approx 268.083\,u^{3}

The volume of the sphere is approximately 268.083 cubic units.

c) The fraction of the cube taken by the sphere is the ratio of the volume of the sphere to the volume of the cube. That is to say:

r = \frac{V_{s}}{V_{c}}

If we know that V_{c} = 512\,u^{3} and V_{s} \approx 268.083\,u^{3}, then the fraction of the cube that is taken up by the sphere is:

r = 0.524

The result in percentage form is calculated by multiplying the result above by 100.

\% r = 52.4\,\%

The fraction of the cube that is taken up by the sphere is 0.524, whose equivalent in percentage form is 52.4 %.

6 0
3 years ago
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