All categories

4 years ago

Select an expression that is equivalent to (m^2-25)

Mathematics

1 answer:

Veronika [31]4 years ago

4 0

Hello
by identity : a²-b² = (a-b)(a+b)
m²-25 = m²-5² (m-5)(m+5)

You might be interested in

Li deposited $17,500 into a bank account that earned simple interest each year. After 2 years, he had earned $2975 in interest.

Keith_Richards [23]

Answer:

The annual interest rate was $1487.50

Step-by-step explanation:

All you do is 2975 divided by2=1487.50

4 0

3 years ago

1. 65% of what number is 5.2?

swat32

1) 65% of x=5.2
65/100 of x=5.2
0.65x=5.2
x=5.2/0.65
x=8

2) 44% of x=55
44/100 of x=55
0.44x=55
x=55/0.44
x=125

3) 50% 0f x=7.5
50/100 of x =7.5
0.5x=7.5
x=7.5/0.5
x=15

4) 100% of x =21
100/100 of x=21
1x=21
x=21/1
x=21...........

6 0

4 years ago

Eight kids got to go to the water park for $60. how many students could go for $240

sineoko [7]

4 more students can go for $240
240/60= 4

6 0

3 years ago

Find the equation of the line that cuts through (0,5) and (1, 2)? a. y=-3x + 5 b. y = 3x + 5 c. y = -5x + 3 d. Y = -1/3x + 5. Pl

Dafna11 [192]

Answer:

a. y = -3x + 5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

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

Slope-Intercept Form: y = mx + b

m - slope
b - y-intercept

Step-by-step explanation:

Step 1: Define

y-intercept (0, 5)

Point (1, 2)

Step 2: Find slope m

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

Substitute [SF]: $m=\frac{2-5}{1-0}$
Subtract: $m=\frac{-3}{1}$
Divide: $m=-3$

Step 3: Write Equation

Plug in variables into the general form.

y = -3x + 5

8 0

3 years ago

PLEASE HELP!!!

sergij07 [2.7K]

Hi There!

Answer:

C) 1/2 (x+5) = 36

Step-by-step explanation:

Multiply 2 too both sides:

1/2 * 2 (x + 5) = 36 * 2

(x + 5) = 72

Subtract 5 too both sides:

x + 5 - 5 = 72 - 5

Simplify:

x = 67

Hope This Helps :)

4 0

3 years ago

Read 2 more answers