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3 years ago

Select all the expressions

Mathematics

2 answers:

blsea [12.9K]3 years ago

8 0

Answer: 3 1/4, 12(7-3), 2-0.5
Expressions are equations that aren’t solved. If there isn’t an equal sign then most likely it’s an expression

Nutka1998 [239]3 years ago

5 0

3 1/4
I know the answer

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In ΔBCD, the measure of ∠D=90°, DC = 12, BD = 35, and CB = 37. What is the value of the tangent of ∠B to the nearest hundredth?

Maru [420]

Answer:

0.34

Step-by-step explanation:

5 0

3 years ago

Listed below are the top 10 annual salaries of tv personalities. Find the range , variance and standard deviations for the sampl

irinina [24]

range is 31.5, variance is 161.3 and standard deviation is 12.7 for a sample of top 10 annual TV personalities.

Step-by-step explanation:

Average is mid-point is the mid-point of the data but can skew....
On the Left or Right is there are higher or lower values.
Range is difference between maximum and minimum value of data.
Variance, measure of variability of data but squared or mean deviation.
Standard deviation is the most important variability.
It helps in finding out variability with 3 sigma deviations.
Standard deviation is square root of variance and each sigma explains...
The data lieing between or within the extreme values.

4 0

3 years ago

Please help me!!

Savatey [412]

Given:

Points on the line are (5, 7) and (5, -5).

To find:

Equation of a line parallel to line l.

Solution:

Let us first find the slope of line l.

Slope of the line formula:

$$m=\frac{y_2-y_1}{x_2-x_1}$

$$m=\frac{-5-7}{5-5}$

$$m=\frac{-12}{0}$

m = undefined

The line intersects at x-axis, so the y-intercept is 0.

Equation of line l is x = 5.

<em>If two lines are parallel, then their slopes are equal.</em>

In the option, find the line which also have slope undefined.

Option A: x = 5y

Divide by 5 on both sides, we get

$$\frac{x}{5} =y$

Here slope is $\frac{1}{5}$ . So it is not parallel to line l.

Option B: x = -2

Here, the slope is undefined. It also passes through the x-axis.

Therefore, it is parallel to line l.

Option C: y = 5

Here, the line passes through y-axis.

So, it is not parallel to line l.

Option D: y = -5x.

Here, the slope is -5.

So, it is not parallel to line l.

Hence x = -2 is and equation for a line that is parallel to line l in the graph.

3 0

3 years ago

Enter the correct answer in the box.

77julia77 [94]

The equation of function g(x) = 2(x -7)² - 1, and the values of h and k are 7 and -1, respectively.

<h3>What is a quadratic equation?</h3>

A quadratic equation is the second-order degree algebraic expression in a variable.

The standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.

The function is given as:

f(x) = 2x² - 1

When the function is translated with 7 units left, the transformation rule is:

(x,y) -> (x + 7, y)

So,

g(x) = 2(x -7)² - 1

A quadratic function is expressed as:

g(x) = a(x -h)² + k

By comparison, the values of h and k are 7 and -1, respectively.

Learn more about quadratic equations;

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6 0

2 years ago

Find the value of x in similar polygons below

muminat

Answer:

Choice A

Step-by-step explanation:

When you have two shapes that are similar their sides are always proportional. So all we have to do is set up a proportion.

$\frac{18}{4.5}=\frac{x}{1.5}$

Now we cross multiply and solve

$27=4.5x\\x=6$

And that's it x equals 6 feet.

4 0

3 years ago