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3 years ago

The perimeter of the triangle is the same as the perimeter of the square

Mathematics

1 answer:

Maurinko [17]3 years ago

8 0

Answer:

Step-by-step explanation:

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Find the missing number ___:7 = 12:21a.14b.12c.4d.3

Novay_Z [31]

$x:7=12:21\to\dfrac{x}{7}=\dfrac{12}{21}\ \ \ |cross\ multiply\\\\21x=7\cdot12\\21x=84\ \ \ |divide\ both\ sides\ by\ 21\\\boxed{x=4}\\\\Other\ method:\\\dfrac{x}{7}=\dfrac{12}{21}\\\\21:7=\boxed3\to12:\boxed3=4\\\\\boxed{\frac{4}{7}=\frac{12}{21}\to4:7=12:21}$

6 0

3 years ago

Find the slope of the line that passes through the points (-4,2) and (6,6)

aev [14]

Answer:

D. 2/5

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

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

Step-by-step explanation:

Step 1: Define

Identify

Point (-4, 2)

Point (6, 6)

Step 2: Find slope m

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

Substitute in points [Slope Formula]: $\displaystyle m = \frac{6-2}{6--4}$
[Fraction] Subtract: $\displaystyle m = \frac{4}{10}$
[Fraction] Simplify: $\displaystyle m = \frac{2}{5}$

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3 years ago

Kim is reading a book with 380 pages. she read 20 pages each day until she reached part 2 of the book. part 2 of the book is 160

Phoenix [80]

If you would like to know how many days did it take Kim to read part 1 of the book, you can calculate this using the following steps:

d ... the number of days
380 pages - 20 pages * d = 160 pages
380 - 20 * d = 160
380 - 160 = 20 * d
220 = 20 * d
d = 220 / 20
d = 11 days

The correct result would be 11 days.

8 0

3 years ago

Louise noticed that her bank balance was −$33.72 before her paycheck was deposited. After the check had been deposited, the bala

Katena32 [7]

Literally Louise didn't pay anything, the bank just deducted the negative balance to her paycheck. to answer how much the she paid, the answer is $33.72, this is the negative amount balance on her bank.

3 0

3 years ago

-49.239 5.65 What is the sum

hammer [34]

-49.239 + 5.65 = -43.589

4 0

2 years ago

Read 2 more answers