# Which expression helps you find the length x of a side of a rectangle that has a diagonal of 15 units and a width of 9 units? A x^2 = 15^2 – 9^2 B x^2 = (15 + 9)^2 C x^2 = 15^2 + 9^2 D x^2 = (15 – 9)^2

Answer: A. x^2 = 15^2 - 9^2

Here's why:
c^2 = a^2 + b^2

from the question:
15^2 = 9^2 + x^2

15^2 - 9^2 = x^2 which is similar to answer in A.

## Related Questions

If a square plate has side lengths of 5 inches, what is the length of the diagonal to the nearest tenth of an inch?

It is given that the plate is a square.

Therefore, let us represent the side of the square by the variable, "a".

Therefore, it is given to us that: inches.

Now, we have to find the diagonal of the square. We know that the diagonal, of a square is given by the formula:

Applying the above formula to our case we get the diagonal to be as:

inches.

Therefore, the length of the diagonal to the nearest tenth of an inch is:

inches.

Use the Pythagoras theorem:-

diagonal^2 = 5^2+5^2 = 50
diagonal = sqrt 50 =  7.1  inches to nearest tenth

What are the different ways of the simulation indicates when an equation is balanced?

When an equation is balanced, the different ways that the simulation indicates are as follows:

- Happy Face appears

- The scales are balanced

- Pictures show same kind of atoms in reactants and products

- Pictures show same number of atoms in reactants and products

N times \$3.25 = \$325.00. What is the value of N

Nx3.25=325.00
------- -------
3.25 3.25

N=100

Students measure their heights, arm lengths, and stride lengths to determine whether there is a relationship among the values. Which type of graph should the students use to display their data? line graphscatter plotbar graphhistogram

The correct option is 2. The student should use scatter plot to display their data.

Step-by-step explanation:

It is given that the students measure their heights, arm lengths, and stride lengths to determine whether there is a relationship among the values.

Line graph: Line graph is a continuous graph, which is generated by connecting the points of scatter plot. Generally, they are used to describe the value of something over time.

Scatter plot: The data points are plotted in a coordinate plane. Where each point defines the value of y with respect to x. Scatter plot is used for random data.

Bar graph: It is used to compare changes between different groups or data over the time.

Histogram: It is used to describe the frequency of continuous data.

The measure of their heights, arm lengths, and stride lengths is a random data. So, the student should use scatter plot to display their data.

Therefore, the correct option is 2.

A scatter plot would best display this data.

Which point slope equation represents a line that passes through (3, -2) with a slope of - 4/5 • y - 3 = -4/5 (x + 2)

• y - 2 = 4/5 (x - 3)

• y + 2 = -4/5 (x - 3)

• y + 3 = 4/5 (x + 2)

We know that
the equation of a line in the point slope form is
y-y1=m*(x-x1)

if m=-4/5  and the point is (3,-2)
the equation is
y-y1=m*(x-x1)------> y-(-2)=(-4/5)*(x-3)----> y+2=(-4/5)*(x-3)

y + 2 = -4/5 (x - 3)

What is a square root

A number which produces a specified quantity when multiplied by itself.

Ex: "7 is a square root of 49"

Evaluate the expression 2x - (4y - 3) + 5xz, when x = -3, y = 2, and z = -1

Substitute each variable for the coefficient. Remember PEMDAS.

Approximate 12lb 13oz to the nearest stone

1 stone.

Step-by-step explanation:

There are 14 pounds in a stone and 16 ounces in a pound.

So the 13 ounces rounds up to 1 pound to make 13 pounds, which rounds up  1 stone.

What is 90,000 more than 1 million?

Step-by-step explanation: