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3 years ago

What is 6,523 ÷7= what is 6523÷7=?

Mathematics

1 answer:

Nitella [24]3 years ago

3 0

931.86, if rounded to the nearest hundredth.

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(10 - 2 )^{2} + ( 5 - 10 ÷ 2 )

bixtya [17]

Answer:

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Step-by-step explanation:

Step 1: Define

(10 - 2)² + (5 - 10 ÷ 2)

Step 2: Evaluate

(Parenthesis) Divide: (10 - 2)² + (5 - 5)
(Parenthesis) Subtract: 8²
Exponents: 64

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Define a two column proof

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Answer:

Step-by-step explanation:

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3 years ago

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AB and BC form a right angle at point B if A = (-3,-1) and B = (4,4) what is the equation if BC

sergejj [24]

Answer:

$7x+5y-48=0$

Step-by-step explanation:

Refer the attached figure .

We are given a line AB

Point A $=(x_1,y_1) = (-3,-1)$

Point B $=(x_2,y_2) = (4,4)$

Formula for slope 'm' when two points are given :

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

Substituting thew values

$m=\frac{4-(-1)}{4-(-3)}$

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

Since we are given that AB is perpendicular to BC

So, By property - perpendicular slopes are negative reciprocals of each other.

$\Rightarrow m_1\times m_2 =-1$

$\Rightarrow \frac{5}{7}\times m_2 =-1$

$\Rightarrow m_2 = \frac{-7}{5}$

So, Slope for line BC : $m_2 = \frac{-7}{5}$

Point B = (4,4)

Formula of equation of line : $y-y_1=m(x-x_1)$

$y-4=\frac{-7}{5}(x-4)$

$5(y-4)=-7(x-4)$

$5y-20=-7x+28$

$7x+5y-20-28=0$

$7x+5y-48=0$

Hence the equation of line BC : $7x+5y-48=0$

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25% of the items were on sale. There were 120 items How many were on sale?

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Just this question I've tried but don't understand it

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