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3 years ago

You move down 2 units and up 7 units. You end at (-1,4). Where did you start?

2 answers:

6 0

If you are going up and down, then you are referrig to the y-axis so you would focus on the 4. subtract 2 to get 2 then add 7 to get 9 and plug your answer back in to get (-1,9).

Tomtit [17]3 years ago

6 0

You would of started at (-1,-1) because if you moved down 2 units you'd be at (-1,-3) then when you move up seven you would be at (-1,4).

So the answers (-1,-1)

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3-3k+7k=5b solve for k

DaniilM [7]

$3-3k+7k=5b \\\\ 3+4k=5b \\\\ 4k=5b-3 \\\\ \boxed{k=\frac{5b-3}{4}}$

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3 years ago

Find the area of the shaded portion in the square (assuming the center point of each arc is the corresponding central point of t

Elena L [17]

Answer:

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Step-by-step explanation:

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3 years ago

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NEED HELP WITH THESE 5 QUESTIONS!!!

mart [117]

Answer:

The car travels different distances per unit of time because the portion shows a nonlinear, increasing function; -50; Both Table A and Table B do not represent functions; −2 ; {−2, 0, 1, 2, 3, 4}

Step-by-step explanation:

A linear graph of any sort is a graph that has a constant rate of change. This graph is not linear; therefore it does not have a constant rate of change. This means that the car travels different distances per unit of time between sections.

To find the rate of change, we find the slope between these two points. We use the formula

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

Using our points, we have

$m=\frac{150-0}{0-3}=\frac{150}{-3}=-50$

A function is a relation in which each element of the domain (x) is mapped to only one element of the range (y). In both of these tables, we have x-values that are mapped to two y-values; in Table A, 3 is mapped to 1 and 0; and in Table B, 5 is mapped to 2 and -2.

We use the slope formula again:

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

Using our points, we have

$m=\frac{-7-1}{3--1}=\frac{-7-1}{3+1}=\frac{-8}{4}=-2$

The domain of a graph is the set of inputs or x-values. From our points, we have the set:

{-2, 0, 1, 2, 3, 4}

5 0

3 years ago

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I need help with this

Ilia_Sergeevich [38]

Answer:

1. x= 12.20

2. x= 8.94

3. x= 31.80

Step-by-step explanation:

H =x , P = 7 and B = 10

using pythagoras theorem

H = 12.20

H =21 , P = x and B = 19

using pythagoras theorem

P = 8.94

H =x , P = 15.09 and B = 28

using pythagoras theorem

P = 31.80

4 0

3 years ago

Solve using the quadratic formula. Approximate answers to the nearest tenth.

-BARSIC- [3]

Answer:

$\displaystyle x=-1, \ 8$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Standard Form: ax² + bx + c = 0
Quadratic Formula: $\displaystyle x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}$

Step-by-step explanation:

Step 1: Define

Identify variables

x² - 7x - 8

↓

a = 1, b = -7, c = -8

Step 2: Solve for x

Substitute in variables [Quadratic Formula]: $\displaystyle x=\frac{7 \pm \sqrt{(-7)^2-4(1)(-8)}}{2(1)}$
[√Radical] Evaluate exponents: $\displaystyle x=\frac{7 \pm \sqrt{49-4(1)(-8)}}{2(1)}$
[√Radical] Multiply: $\displaystyle x=\frac{7 \pm \sqrt{49 + 32}}{2(1)}$
[√Radical] Add: $\displaystyle x=\frac{7 \pm \sqrt{81}}{2(1)}$
[√Radical] Evaluate: $\displaystyle x=\frac{7 \pm 9}{2(1)}$
Multiply: $\displaystyle x=\frac{7 \pm 9}{2}$
Add/Subtract: $\displaystyle x=\frac{-2}{2}, \ \frac{16}{2}$
Divide: $\displaystyle x=-1, \ 8$

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3 years ago