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3 years ago

I need help on subtracting and adding integers.. can someone explain in deep explanation?

1 answer:

4 0

Number line usually helps a lot

Start at the first number and move to the left for subtracting and to the right for adding. Hope this helps.

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Help me on this math question

Gnom [1K]

Answer:

Arithmetic

Step-by-step explanation:

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3 years ago

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2x-7/3=1 please answer my question iwill mark brainliest

Neporo4naja [7]

$2x - \frac{7}{3} = 1 \\ \\ 2x = 1 + \frac{7}{3} \\ \\ 2x = \frac{3 + 7}{3} \\ \\ 2x = \frac{10}{3} \\ \\ x = \frac{5}{3} \\ \\ x = 1 + \frac{2}{3} \\ \\ x = 1 + 0.66666 \\ \\ x = 1.66666$

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4 years ago

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PLEASE HELP DUE IN 20 MINUTES!!! about cylinders

Andru [333]

Answer: Diameter = 4 cm

Step-by-step explanation:

20π = (π)(r^2)(5)

divide by 5 * π

4 = r^2

find the square root of both sides

2 = r

2 * 2 = d

4 = d

3 0

3 years ago

WILL GIVE A BRAINLIEST

skelet666 [1.2K]

Find slope
slope betwen 2 points (x1,y1) and (x2,y2) is (y2-y1)/(x2-x1)

so
first make denoms same
denom is 10
(4/5,1/5) turns to (8/10,2/10)
(1/2,3/2) turns to (5/10,15/10)
slope=(15/10-2/10)/(5/10-8/10)=(13/10)/(-3/10)=13/-3=-13/3

use point slope
use (4/5,1/5)
y-y1=m(x-x1)
a point is (x1,y1) and slope is m
y-1/5=-13/3(x-4/5)
expand
wait, we don't need to do that, the only one with slope -13/3 is D
answer is D

4 0

3 years ago

In the following equation, f(x)=2x +7, what is f(-3)?

Helen [10]

Answer:

f(-3) = 1

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Function Notation

Step-by-step explanation:

Step 1: Define

f(x) = 2x + 7

f(-3) is x = -3

Step 2: Evaluate

Substitute: f(-3) = 2(-3) + 7
Multiply: f(-3) = -6 + 7
Add: f(-3) = 1

5 0

3 years ago