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3 years ago

Solve the system of two equations in two variables.

Mathematics

1 answer:

Agata [3.3K]3 years ago

3 0

Answer:

1. x=-7-4/9

2.x=-7+2/3y

Step-by-step explanation:

1.9x=-63-4y

2.3x=-21+2y

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If EF is the perpendicular bisector of CD, find x.

Ksenya-84 [330]

Answer:

Step-by-step explanation:

A Perpendicular Bisector cuts a segment into two equal parts. We already know that 4x+19 and 6x-7 are both equal.

So then, you would start with 6x-7 = 4x+19.

6x-7 = 4x+19

Subtract -4x from both sides

2x-7 = 19

Add 7 to both sides

2x = 26

Divide both sides by two

x= 13

You only need x, so you're done.

(I'm like 90 percent sure this is wrong man don take my word for it bro).

5 0

2 years ago

Read 2 more answers

NEED HELP MULT CHOICE

Arturiano [62]

Use a proportion.

Let the unknown height of the building be x.

x is to 39 m as 59 cm is to 71 cm.

x/39 = 59/71

71x = 39 * 59

x = 2301

x = 32.4

Answer: A. 32.4 m

6 0

2 years ago

Read 2 more answers

Explain the difference between solving an and inequality and an or inequality.

adell [148]

Answer:

An and inequality contains compound restrictions, i.e., x must be less that 4 and greater than 1, while an or inequality contains multiple sets of separate restrictions, in which, only one must be fulfilled, i.e., x is greater than 5 or less than -3.

Hope it helps :)

7 0

2 years ago

Mary pays $24.00 for 5 pounds of apples. At the same price, how much would she pay

mina [271]

First calculate the price of one pound of apples
24/5
= $4.80
Then multiply it by 6
6 x 4.80
Your price is $28.80

4 0

3 years ago

Determine the rate of change between the points (-1,-1) and (1,-1).

AVprozaik [17]

Answer:

$\displaystyle m = 0$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinate Planes

Coordinates (x, y)
Slope Formula: $\displaystyle m = \frac{y_2 - y_1}{x_2 - x_1}$

Step-by-step explanation:

*Note:

Rate of change is slope.

Step 1: Define

Identify.

Point (-1, -1)

Point (1, -1)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m.

Substitute in points [Slope Formula]: $\displaystyle m = \frac{-1 + 1}{1 + 1}$
[Order of Operations] Simplify: $\displaystyle m = \frac{0}{2}$
Simplify: $\displaystyle m = 0$

4 0

2 years ago