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3 years ago

Please answer the ones that have red dots on them my mom said those ones are wrong copy and paste then add your answer please:)

Mathematics

1 answer:

natita [175]3 years ago

6 0

1.) 14

2.) 10

3.) 7 : 6

5.) 80

6.) 8 : 7

these are all i have the time to answer i'm sorry!

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Triangle ABC is formed by the vertices A(1,2,-1), B(-3,-6,2)and C(3,-2,0).

Vesnalui [34]

Answer:

Point D: $(0,-4, 1 )$

d = √41

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Pre-Calculus

Midpoint Formula [3D]: $(\frac{x_1+x_2}{2},\frac{y_1+y_2}{2}, \frac{z_1+z_2}{2} )$
Distance Formula [3D]: $d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2+(z_2-z_1)^2}$

Step-by-step explanation:

Step 1: Define

Point A(1, 2, -1)

Point B(-3, -6, 2)

Point C(3, -2, 0)

Step 2: Find Point D

Simply plug in your coordinates B and C into the midpoint formula to find midpoint

Substitute [MF]: $(\frac{-3+3}{2},\frac{-6-2}{2}, \frac{2+0}{2} )$
Add/Subtract: $(\frac{0}{2},\frac{-8}{2}, \frac{2}{2} )$
Divide: $(0,-4, 1 )$

Step 3: Find distance d

Simply plug in the 2 coordinates A and D into the distance formula to find distance d

Substitute [DF]: $d = \sqrt{(0-1)^2+(-4-2)^2+(1+1)^2}$
Subtract/Add: $d = \sqrt{(-1)^2+(-6)^2+(2)^2}$
Exponents: $d = \sqrt{1+36+4}$
Add: $d = \sqrt{41}$

5 0

3 years ago

What is the slope? Rise/Run

NARA [144]

Answer: divided by 3

Step-by-step explanation: x is rise y is run

5 0

3 years ago

Read 2 more answers

2b−6= −4 what is b

gogolik [260]

2b - 6 = -4

2b = -4 + 6

2b = 2

b = 2/2

b = 1

8 0

3 years ago

Read 2 more answers

#42. I really need help

viva [34]

Starting from the top leftmost one and going right in each layer:
3
-5
-4
-4
thats all i have time to do sry

5 0

3 years ago

Help please! Can anyone answer theses quickly?

Sidana [21]

C is Communative, A is Associative, and D is Distributed.
1. C,AC,D,B
2. 3/2 (reciprocal)
3. 7x312= 7(312/2)2= 7(156+156)

5 0

4 years ago