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3 years ago

Which table of ordered pairs represents a proportional relationship?

Mathematics

2 answers:

MAVERICK [17]3 years ago

6 0

Answer:

Step-by-step explanation:

got it right

34kurt3 years ago

5 0

Answer:

its c

Step-by-step explanation:

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Katarina [22]

Answer:

144

Step-by-step explanation:

i think if i am wrong dont judge

6 0

4 years ago

The following figure is a Cube. Find the missing values.

Alla [95]

Answer:

384 ft²

Step-by-step explanation:

Alrighty! The volume of a cube is V = a³. The equation for the surface area of a cube is 6a². The key number here will come with finding what a is. Here, we are already given the volume: 512 ft³. By working backwards a little we can solve for the variable a using the volume.

Volume = a³

512 = a³

Here we need to isolate the variable a in order to solve for it. In order to do this we must figure out a way to move the cube³ over. We can do this by cube rooting 512!

512 = a³

∛512 = a

The cubed root of 512 = 8 thus:

8 = a

Now we that we have solved for the variable a, we can plug this into our equation for the surface area of a cube.

SA = 6a²

a = 8

SA = 6(8)²

Solving exponents comes first naturally. 8² = 64

SA = 6(64)

SA = 384

Ta-da! Your surface area is 384 ft².

3 0

3 years ago

What are the coordinates of the vertex ?

Stolb23 [73]

The vertex of a parabola is the point where the parabola crosses its axis of symmetry. Therefore, the coordinates of the vertex is (2,4).

8 0

4 years ago

The average wage for an electrician in CA is $25.47/hour. That is 11% above the national average. What is the national average?

yan [13]

Answer:

$22.95/hour.

Step-by-step explanation:

It is given that the average wage for an electrician in CA is $25.47/hour. That is 11% above the national average.

Let as consider x be the national average.

11% above the national average is

$x+\dfrac{11}{100}x=x+0.11x=1.11x$

The average wage for an electrician in CA is 11% above the national average. So,

$1.11x=25.47$

Divide both sides by 1.11.

$x=\dfrac{25.47}{1.11}$

$x=22.945945...$

$x=22.95$

Therefore, the national average is $22.95/hour.

3 0

3 years ago

In the parallelogram ABCD, M angle A =2x +50 and m angle C= 3x + 40. The measure of ZA is

ipn [44]

Answer:

∠A = 70°

Step-by-step explanation:

I'm... guessing this is what you mean? It would've been helpful if you'd provided pictures.

Since all parallelograms consist of two pairs of vertically opposite angles, ∠A and ∠C are equivalent.

Which means that 2x + 50 = 3x + 40.

In which you solve the equation.

2x + 50 = 3x + 40

-2x -2x

50 = x + 40

-40 -40

x = 10

Now, to find ∠A, substitute x into the equation:

∠A = 2x + 50

x = 10

∠A = 20 + 50

∠A = 70

Hence, ∠A = 70°

5 0

3 years ago

Which table of ordered pairs represents a proportional relationship?​

Which table of ordered pairs represents a proportional relationship?