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4 years ago

Math! Please help. Really don't understand this one!

Mathematics

1 answer:

MrRissso [65]4 years ago

6 0

First find out 3% of 400.00= 12 so it would be either B orC

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PLEASE HELP LOOK AT THE PHOTO. What are 2 other ways I could name ZADB? Why

Crank

Answer:

Angle 2 ZBDC

Step-by-step explanation:

The reason why is because ACD is the same as BDC. What I mean is it has the same angles.

5 0

3 years ago

Help!! 100 points! (IF SPAM I WILL REPORT YOU AND IF YOU WANT POINTS TYPE FRE ANSWERS IN SEARCH)

iogann1982 [59]

Answer:

Step-by-step explanation:

Part A

Area of a rectangle = length x width

Garden area = 7 3/4 x 2 2/3

= 31/4 x 8/3

= 62/3

= 20 2/3 square feet

Part B

5/8 of the area = 62/3 * 5/8

= 31*5 / 3*12

= 155 / 36

= 4 11/36

The question asks to do so without calculation - the only way is that because the length is approximately 8 feet, section off 5 feet along the length will give an area approximately 5/8 of the total area.

5 0

2 years ago

consider the following set of equations: equation a: y = 2x 4 equation b: y = 3x 1 which of the following is a step that can be

loris [4]

Y = 2x + 4 and y = 3x + 1
Therefore, 2x + 4 = 3x + 1

4 0

3 years ago

Read 2 more answers

Which of the following is a point-slope equation of a line that passes through the points (-1, 4) and (8,-2)?

yan [13]

Answer:

Step-by-step explanation:

We want to find the point-slope equation of a line that passes through the points (-1, 4) and (8, -2).

Point-slope form is given by:

$y-y_1=m(x-x_1)$

Where m is the slope and (x₁, y₁) is a point.

So, let's find the slope of the line first. We can use the slope formula:

$\displaystyle m=\frac{\Delta y}{\Delta x}=\frac{-2-4}{8-(-1)}=\frac{-6}{9}=-\frac{2}{3}$

We can choose (-1, 4) as our point. So, (x₁, y₁) = (-1, 4).

Substitute:

$\displaystyle y-(4)=-\frac{2}{3}(x-(-1))$

Simplify:

$\displaystyle y-4=-\frac{2}{3}(x+1)$

Therefore, our answer is B.

7 0

3 years ago

F(x) = -4x2 + 12x – 9

DochEvi [55]

Answer:

$D = 0$

The graph has 1 x-intercept

Step-by-step explanation:

Given

$f(x) = -4x^2 + 12x - 9$

Required

- Discriminant of f

- Number of x intercepts

Let D represent the discriminant;

D is calculated as thus

$D = b^2 - 4ac$

Where a, b and c are derived from the following general format;

$f(x) = ax^2 + bx +c$

By comparing $f(x) = ax^2 + bx +c$ with $f(x) = -4x^2 + 12x - 9$

We have

$f(x) = f(x)\\ax^2 = -4x^2\\bx = 12x\\c = -9$

Solving further;

$a = -4\\b=12\\c=-9$

So, D can now be calculated;

$D = b^2 - 4ac$ becomes

$D = 12^2 - 4 * -4 * -9$

$D = 144 - 144$

$D = 0$

Hence, the discriminant of f is 0

From the value of the discriminant, we can determine the number of x intercepts of the graph;

When D = 0, then; there exists only one x-intercept and it as calculated as thus

$x = \frac{-b}{2a}$

Recall that

$a = -4\\b=12\\c=-9$

So, $x = \frac{-b}{2a}$ becomes

$x = \frac{-12}{2 * -4}$

$x = \frac{-12}{-8}$

$x = \frac{12}{8}$

$x =1.5$

8 0

3 years ago