All categories

2 years ago

DIRECTIONS: Enter your answer as an ordered pair: (? , ?)

Mathematics

1 answer:

Dmitry [639]2 years ago

5 0

Answer:

(0, 4 )

Step-by-step explanation:

To find the x- intercept, let y = 0 in the equation and solve for x, that is

7x - 4(0) = 28, that is

7x = 28 ( divide both sides by 7 )

x = 4 ← x- intercept ⇒ (0, 4 ) as an ordered pair

You might be interested in

a square painting has an area of 81x^2-90x-25. A second square painting has an area of 25x^2+30x+9. What is an expression that r

galina1969 [7]

Answer:

The answer in the procedure

Step-by-step explanation:

Let

A1 ------> the area of the first square painting

A2 ----> the area of the second square painting

D -----> the difference of the areas

we have

$A1=81x^{2}-90x-25$

$A2=25x^{2}+30x+9$

case 1) The area of the second square painting is greater than the area of the first square painting

The difference of the area of the paintings is equal to subtract the area of the first square painting from the area of the second square painting

D=A2-A1

$D=(25x^{2}+30x+9)-(81x^{2}-90x-25)$

$D=(-56x^{2}+120x+34)$

case 2) The area of the first square painting is greater than the area of the second square painting

The difference of the area of the paintings is equal to subtract the area of the second square painting from the area of the first square painting

D=A1-A2

$D=(81x^{2}-90x-25)-(25x^{2}+30x+9)$

$D=(56x^{2}-120x-34)$

4 0

3 years ago

What is the period of f(x) = sin(x)? StartFraction pi Over 2 EndFraction Pi StartFraction 3 pi Over 2 EndFraction 2 pi

Nostrana [21]

<h3>Answer: 2pi</h3>

2pi radians are equal to 360 degrees. After this point, the function f(x) = sin(x) repeats its values again. Each cycle is 2pi radians long.

4 0

2 years ago

Read 2 more answers

Molar mass of FeCl3, Co(NO3)2, C4H10O, and Cu(NO3)2? Show work.

N76 [4]

Molar mass of FeCl₃ 162.204 g/mol

Molar mass of C₄H₁₀O is 74.1212 g/mol

Molar mass of Cu(NO₃)₂ is 187.5594 g/mol

<u>Step-by-step explanation:</u>

Molar mass is also termed as molecular mass of the compound. So it is the measure of the amount of mass present in the given molecule. It can be obtained by adding the products of number of atoms with their molecular mass.

For example, in order to find the molar mass of FeCl₃, the molecular mass of Fe is noted as 55.845 g/mol and the molecular mass of Cl is noted as 35.453 g/mol.

As FeCl₃ contains one atom of Fe and 3 atoms of Cl, then the

Molar mass = (Number of Fe atoms × Molecular mass of Fe) + ( Number of Cl atoms × Molecular mass of Cl)

Molar mass of FeCl₃ = (1×55.845)+(3×35.453)=162.204 g/mol.

Similarly, the molar mass of C₄H₁₀O will be

Molar mass = (4×Mass of C) + (10×Mass of H) + (1 × Mass of O)

Molar mass = (4×12.0107)+(10×1.00784)+(1×16)=74.1212 g/mol

Then the molar mass of Cu(NO₃)₂ will be

Molar mass = (1× Mass of Cu) + (2×Mass of N)+(6×Mas of Oxygen)

Molar mass = (1×63.546)+(2×14.0067)+(6×16)

Molar mass = 187.5594 g/mol

5 0

2 years ago

Simplify the following <br>(1 1/2) ^-2

Serjik [45]

Answer:

1/2.25 or 4/9

Step-by-step explanation:

6 0

2 years ago

Make an argument for why(4^2)4=(4^4)^2

cupoosta [38]

Questions is incomplete however from what i understand it is asking (4^2)^4 which can be made that the arguement of the function is correct because its is the multiplication of radicals which however way you put it will equal the same

3 0

3 years ago