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3 years ago

Katrina is asked to simplify the expression .

Mathematics

2 answers:

Lorico [155]3 years ago

8 0

The property of distribution

Burka [1]3 years ago

7 0

Answer:

Distribution property of Multiplication allows katrina to do this.

Step-by-step explanation:

The given expression is

$-3a-4b-2(5a-7b)$

Katrina simplify the above expression as

$-3a-4b-2(5a)-2(-7b)$

$-3a-4b-10a+14b$

She use the property

$a(b+c)=ab+bc$

This property is known as Distribution property of Multiplication.

Therefore Distribution property of Multiplication allows katrina to do this.

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Using the distributive property which of the following expressions is equivalent to 6(3+6y)

creativ13 [48]

18+36y is equal to that equation

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3 years ago

Read 2 more answers

A square with unknown side length x has one side extended by 3 inches and the other side extended by 4 inches as shown. The area

natulia [17]

Answer:

(x + 3)(x + 4) = 110

or x² + 7x + 12 = 110

Step-by-step explanation:

4 0

2 years ago

What is the sum of 1/4 and 1/5?

krok68 [10]

To add them, you first need a common denominator.
So multiply <span> 1/4 by 5/5 and 1/5 by 4/4 first.

Now they'll be 5/20 and 4/20.

Add them to get 9/20. </span>

3 0

3 years ago

An athletic field is a 48 yd-by-96 yd rectangle, with a semicircle at each of the short sides. A running track 20 yd wide surr

MA_775_DIABLO [31]

The distance would be equal to 2 times the longest side of the rectangle plus twice the shortest side multiplied by pi / 2 for the semicircle, that is:

longest side 96 and shortest 48

D = 2 * (96) + 2 * (1/2) * pi * 48

D = 192 + pi * 48

This shorter side, which starts at 48, will expand each time by two more in proportion to 20 of the running track between 8 than the number of divisions, that is, 2 * (20/8) = 5

In other words, there are 8 distances, like this:

D1 = 192 + 3.14 * 48 = 342.72 yd

D2 = 192 + 3.14 * (48 + 5) = 358.42 yd

D3 = 192 + 3.14 * (48 + 10) = 374.12 yd

D4 = 192 + 3.14 * (48 + 15) = 389.82 yd

D5 = 192 + 3.14 * (48 + 20) = 405.52 yd

D6 = 192 + 3.14 * (48 + 25) = 421.22 yd

D7 = 192 + 3.14 * (48 + 30) = 436.92 yd

D8 = 192 + 3.14 * (48 + 35) = 452.62 yd

6 0

3 years ago

Find three consecutive integers whose sum is 57????

Setler79 [48]

Answer:18 19 20

Step-by-step explanation:"Consecutive" means that the integers will follow each other in value, for example: 1, 2, 3 or 4, 5, 6. Also, no decimals are needed here because "integers" are whole, counting numbers. Here is the set up: Let x= the first integer Then X+1= 2nd consecutive integer and x+2= 3rd .

Suppose that x=1 x+1= 1+1=2 and x+2=1+2=3 However, you need specific consecutive numbers whose sum is 57. Remember that sum means to add:

x+ (x+1) + (x+2) = 57 Addition of all 3 consecutive numbers Now solve for x

and substitute into each part to come up with the three integers:

3x + 3= 57 3x=54 x=54/3 = 18 x=18, x+1= 18+1=19 x+2=18+2=20

Check your answer: 18+19+20=57 57=57 Check

7 0

3 years ago