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Sunny_sXe [5.5K]
2 years ago
15

Solve for y 129 = y + 43

Mathematics
1 answer:
shtirl [24]2 years ago
5 0

Answer:

86=y

Step-by-step explanation:

129=y+43

-43    -43

86=y

or

y=86

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Let f(x) = -2x + 7 and g(x) = -6x + 3. Find fxg and state its domain.
marissa [1.9K]

Option D: (f\times g)(x)=12 x^{2}-48 x+21; all real numbers.

Explanation:

Given that the functions are f(x)=-2 x+7 and g(x)=-6 x+3

We need to determine the value of (f\times g)(x) and its domain.

<u>The value of </u>(f\times g)(x)<u>:</u>

The value of (f\times g)(x) can be determined by multiplying the two functions.

Thus, we have,

(f\times g)(x)=f(x)\times g(x)

                =(-2x+7)(-6x+3)

                =12x^2-6x-42x+21

(f\times g)(x)=12 x^{2}-48 x+21

Thus, the value of (f\times g)(x) is (f\times g)(x)=12 x^{2}-48 x+21

<u>Domain:</u>

We need to determine the domain of the function (f\times g)(x)

The domain of the function is the set of all independent x - values for which the function is real and well defined.

Thus, the function (f\times g)(x)=12 x^{2}-48 x+21 has no undefined constraints, the function is well defined for all real numbers.

Hence, Option D is the correct answer.

3 0
3 years ago
Read 2 more answers
HELP PLSASE: Find the solution of the system of equations.
Mamont248 [21]

Answer:

Step-by-step explanation:

x

=

−

24

y

=

10

Explanation:

x

+

4

y

=

16

2

x

−

4

y

=

8

Subtract the bottom equation from the top one so the

+

4

y

and

−

4

y

cancel each other out.

−

x

=

24

x

=

−

24

x

+

4

y

=

16

−

24

+

4

y

=

16

4

y

=

40

y

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3 0
3 years ago
Find the circumference and the area of a circle with diameter 2 cm . Use the value 3.14 for π , and do not round your answers. B
Fynjy0 [20]
Circumference= 2×pi×R
Area= pi× R^2
Since Diameter=2 cm ---> Radius is 2× diameter , so R=4 cm

Circumference=2×3.14×4= 25.12 cm
area=3.14× (4)^2= 50.24 cm^2
6 0
3 years ago
Explain how the equation 312.50=a+0.25a
jarptica [38.1K]

Answer:

Step-by-step explanation:

312.50= a+0.25a

We need to combine like terms a=1. All variables without a value equal 1.

a+0.25a= 1.25a

312.50= 1.25a

Divide both sides by 1.25, since 1.25 is being multiplied by a.

a= 250

7 0
3 years ago
Write of a story (word problem) that represents a proportional relationship.
kiruha [24]

Answer:

A proportional relationship is written as:

y = k*x

where k is the constant of proportionality.

A general word problem that represents one of these relationships can be:

If each burger costs $1.50, what would be the cost of buying x burgers?

The cost of x burgers will be x times $1.50, so if we define y as the total price, we will have the relation:

y = $1.50*x

Which is a proportional relationship where the constant of proportionality is $1,50

3 0
3 years ago
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