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Lena [83]
3 years ago
13

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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The circumference of a circle is 11/pi. What is the area, in square inches, of the circle? Express your answer in terms of /pi.
eimsori [14]
So since 11/pi doesn't means 11 divided by pi but it means 11 pi

circumference=2pir
if circumerence=11pi
2pir=11pi
solve for r (radius)
divide both sides by pi
2r=11
divide by 2
r=5.5

area=pir^2
area=pi5.5^2
area=pi30.25

answer is area=30.25pi in^2
6 0
3 years ago
25 pts What is the rule for a reflection across the origin followed by a translation 9 units to the left and 7 units down?
BartSMP [9]

Answer:

B

Step-by-step explanation:

1. A reflection across the origin has a rule

(x,y)\rightarrow (-x,-y).

2. A translation 9 units to the left and 7 units down has a rule

(x,y)\rightarrow (x-9,y-7).

Then the rule for a reflection across the origin followed by a translation 9 units to the left and 7 units down is

(x,y)\rightarrow (-x-9,-y-7).

This means that the point with coordinates (x,y) has the image with coordinates (x',y')=(-x-9,-y-7).

4 0
3 years ago
Read 2 more answers
What is 54/3 in simplest form
prohojiy [21]
I got an answer of 18. 
6 0
3 years ago
3x + y =11 and 6x + 3y = 24 solved by elimination
Svetradugi [14.3K]
Y=2 x=3 double check is at bottom but cut off

4 0
3 years ago
What is the equation of the line that passes through the point (2,-4) and has a slope of -2
kvv77 [185]

Answer:

The answer is

\huge y =  - 2x

Step-by-step explanation:

To find an equation of a line when given the slope and a point we use the formula

y -  y_1 = m(x -  x_1)

From the question we have

y + 4 =  - 2(x - 2) \\ y + 4 =  - 2x + 4 \\ y =  - 2x + 4 - 4

We have the final answer as

<h3>y = -2x</h3>

Hope this helps you

3 0
3 years ago
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