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VashaNatasha [74]
3 years ago
6

For h(x) = x3 + 2x, find h(4).

Mathematics
1 answer:
Ivanshal [37]3 years ago
7 0

Answer:

h(4) = (4)3+2(4) = 20

Step-by-step explanation:

First you input 4 wherever there is an x then you restated the equation with 4 substituted in as x next solve

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a contractor bought a rectangular piece of land that has a perimeter of 200 feet. the ration of the land's length to width is 9:
PIT_PIT [208]

Answer:

length/width = 1/1 = 1

Step-by-step explanation:

(3x)(2x) = 12150

6x^2 = 12150

x^2 = 2025

x = 45

Length is 135 ft, width is 90 ft, perimeter is 450 ft

Geometric mean: 135 : x :: x : 90

x^2 = 12150

x = 45√6

The second rectangular piece of land is a square !

length/width = 1/1 = 1

4 0
3 years ago
Megan got paid $2,156 for babysitting this year. If she makes $11 an hour, how many hours did she babysit this year​
Elenna [48]

Answer:

she worked 196 hours

Step-by-step explanation:

just divide 2156 by 11 :p i hope im right lol.

4 0
3 years ago
What is the value of X?
Ugo [173]

∆ABC similar to ∆CBD

DB/AC = CB/AB

\frac{x}{7.5}  =  \frac{7.5}{x + 3}  \\ x(x + 3) =  {7.5}^{2}  =  { (\frac{15}{2}) }^{2}  \\  {x}^{2}  + 3x =  \frac{225}{4}  \\ 4 {x}^{2}  + 12x = 225 \\ 4 {x}^{2}  + 12x + 9 = 216 \\  {(2x + 3)}^{2}  = 216 \\ 2x + 3 = 6 \sqrt{6}  \\ x =  - 1.5 + 3 \sqrt{6}

approximately 6.1485

4 0
3 years ago
What is the solution to the system of equations 6x+2y=6 7x+3y=5
brilliants [131]

Answer:

(x,y)=(2,-3)

Step-by-step explanation:

6x+2y=6

7x+3y=5

Multiply both sides by 3

18x+6y=18

7x+3y=5

Multiply both sides by -2

18x+6y=18

-14x-6y=-10

Eliminate one variable by adding the equations

4x=8

x=2

Substitute the value of x to get y

6(2)+2y=6

y=-3

x=2

y=-3

8 0
3 years ago
What is the difference between axiom and postulate theorem
nydimaria [60]

Answer:

Axioms or postulates are universal truths. They cannot be proved. Theorem are statements which can be proved.

6 0
2 years ago
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