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3 years ago

Adding & subtracting fractions

2 answers:

7 0

Before you can add or subtract fractions with different denominators, you must first find equivalent fractions with the same denominator, like this:
Find the smallest multiple (LCM) of both numbers.
Rewrite the fractions as equivalent fractions with the LCM as the denominator.
Hope i helped!

Travka [436]3 years ago

7 0

When you add or subtract fractions, the denominators must be the same. Then you add or subtract the numerators and have that same denomenator

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Find the midpoint of the segment with the following endpoints. (2,9) and (8,1)

vazorg [7]

Answer:

$\displaystyle (5,5)$

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)
Midpoint Formula: $\displaystyle (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

Step-by-step explanation:

Step 1: Define

Point (2, 9)

Point (8, 1)

Step 2: Identify

(2, 9) → x₁ = 2, y₁ = 9

(8, 1) → x₂ = 8, y₂ = 1

Step 3: Find Midpoint

Simply plug in your coordinates into the midpoint formula to find midpoint

Substitute in points [Midpoint Formula]: $\displaystyle (\frac{2+8}{2},\frac{9+1}{2})$
[Fractions] Add: $\displaystyle (\frac{10}{2},\frac{10}{2})$
[Fractions] Divide: $\displaystyle (5,5)$

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3 years ago

From the diagram below, we can tell that ____.

Olin [163]

Answer:

b) The two triangles are similar by SAS

Step-by-step explanation:

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2 years ago

In an isosceles triangle the congruent sides each measure 25 yards and the base measures 30 yards what is the height of the tria

andrew11 [14]

Answer:

20 yards

Step-by-step explanation:

Since it is an isosceles triangle, a perpendicular from it's peak to the base bisects the base.

30/2=15

So using the Pythagorean theorem, hypotenuse^2=base^2+height^2

25^2=15^2+H^2

625=225+H^2

H^2=400

height=20 yards

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