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kodGreya [7K]
3 years ago
5

A 3.5ft by 5.5ft mirror is placed in a wooden frame. What is the area of the frame?

Mathematics
2 answers:
Bingel [31]3 years ago
7 0
3.5*5.5=19.25
The formula to find the area is the length times width
Thepotemich [5.8K]3 years ago
3 0

Answer:

19.25 ft^2

Step-by-step explanation:

According to the dimension we can assume the mirror is a rectangle. The area of a rectangle is the length timest he width. The length is 5.5ft and the width is 3.5ft.

=5.5\cdot{3.5}=19.25

The area of the mirror is 19.25 ft^2

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Which equation is equivalent to 60% of 25? Select all that apply.
elena-14-01-66 [18.8K]

Answer:

tHERE ARE NO EQUATIONS

Step-by-step explanation:

60% of 25

= 60/100 x 25

= 0.6 x 25

= 15

7 0
3 years ago
Write the equation of a line that is perpendicular to the given line and that passes through the given point. y= 2/3x + 9 ; (–6,
matrenka [14]

Answer:

y = - \frac{3}{2} x - 4

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = \frac{2}{3} x + 9 ← is in slope- intercept form

with slope m = \frac{2}{3}

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{\frac{2}{3} } = - \frac{3}{2}, thus

y = - \frac{3}{2} x + c ← is the partial equation

To find c substitute (- 6, 5) into the partial equation

5 = 9 + c ⇒ c = 5 - 9 = - 4

y = - \frac{3}{2} x - 4 ← equation of perpendicular line

5 0
3 years ago
How do I solve these systems of equations?
ruslelena [56]
1. -x+9y=-5
x-5y=1
-----------------
x=1+5y
-(1+5y)+9y=-5
-1-5y+9y=-5
-1+4y=-5
4y=-5-(-1)
4y=-5+1=-4
4y=-4
y=-4/4=-1
So x=1+5y=1+5(-1)=1-5=-4
Answer: x=-4, y=-1. (-4, -1).

2) -7x-y=13
8x+y=-14
------------------
y=-14-8x
-7x-(-14-8x)=13
-7x+14+8x=13
14+x=13
x=13-14=-1
y=-14-8(-1)=-14+8=-6.
Answer: x=-1, y=-6. (-1, -6).

3) x+7y=24
x-9y=-24
----------------
x=24-7y
24-7y-9y=-24
24-16y=-24
16y=24-(-24)=24+24=48
y=48/16=3
x=24-7(3)=24-21=3
Answer: x=3, y=3. (3, 3).

4). 3x+y=-21
x+y=-5
-------------------
x=-5-y
3(-5-y)+y=-21
-15-3y+y=-21
-15-2y=-21
2y=-15-(-21)=-15+21=6
y=6/2=3
x=-5-3=-8.
Answer: x=-8, y=3. (-8, 3).

5) 3x+6y=6
9x-12y=18
---------------
Simplify 3x+6y=6 will get you x+2y=2,
x=2-2y,
9(2-2y)-12y=18
18-18y-12y=18
18-30y=18
30y=18-18=0
y=0/30=0
x=2-2(0)=2-0=2
Answer: x=2, y=0. (2, 0).

6) 6x+8y=26
-7x+2y=-19
-----------------
-4(-7x+2y)=-4(-19)
28x-8y=76
---------------------------
6x+8y=26
28x-8y=76
-----------------
34x=102
x=102/34=3
6(3)+8y=26
18+8y=26
8y=26-18=8
y=8/8=1
Answer: x=3, y=1. (3, 1)

BONUS:
-5x+5y=-25
3x+2y=10
---------------
Simplify -5x+5y=-25 you will get x-y=5
x=y+5
3(y+5)+2y=10
3y+15+2y=10
5y+15=10
5y=10-15=-5
y=-5/5=-1
x=-1+5=4
Answer: x=4, y=-1. (4, -1). 
6 0
2 years ago
3 - 2(b - 2) = 2 - 7b<br> b =<br><br><br> Please show work
Firdavs [7]
3- 2b +4 = 2-7b
3+4 = 2 - 5b
7 = 2 -5b
5 = -5b
-5b /-5 = -1
b = -1
5 0
3 years ago
I NEED HELP.. :(<br><br> Someone please help me with this edge unity question
nasty-shy [4]

Answer:

I think its a,c,d,f, and g

7 0
2 years ago
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