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SVETLANKA909090 [29]
2 years ago
10

Robert wants to install windows in a bus barn to improve the airflow in the summer months. If Robert makes his own screens, he c

an save money. To have screen material to fold over the window frame, Robert needs to cut 5 1/2 foot by 5 1/2 foot squares. The back wall by the offices requires four windows. For a good cross-flow of air, Robert will build five windows on each of the ohter two walls of the barn. How many square inches of screen will be needed for all of the windows?
Mathematics
1 answer:
DedPeter [7]2 years ago
8 0
=1/2

you add both on each side then subtract 2 from you anser

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In the figure CD is the perpendicular bisector of AB . If the length of AC is 2x and the length of BC is 3x - 5 . The value of x
Dennis_Churaev [7]

Answer

Find out the value of x .

To proof

SAS congurence property

In this property two sides and one angle of the two triangles are equal.

in the Δ ADC and ΔBDC

(1) CD = CD (common side of both the triangle)

(2) ∠CDA = ∠ CDB = 90 °

( ∠CDA +∠ CDB = 180 ° (Linear pair)

as given in the diagram

∠CDA  = 90°

∠ CDB = 180 ° - 90°

∠ CDB = 90°)

(3) AD = DB (as shown in the diagram)

Δ ADC ≅ ΔBDC

by using the SAS congurence property .

AC = BC

(Corresponding sides of the congurent triangle)

As given

the length of AC is 2x and the length of BC is 3x - 5 .

2x = 3x - 5

3x -2x =5

x = 5

The value of x is 5 .

Hence proved


7 0
3 years ago
Read 2 more answers
Help picture below problem 12
lesya [120]

Answer:

80 degrees

Step-by-step explanation:

This is a really confusing question with a really confusing answer. Basically, the 80 degree angle that they give us (Angle 2, I think) is equivalent to Angle 4, Angle 5, and Angle 3. I know that might seem really weird, but if you look closely at all the angles I just named, they all look like they are about the same measure. They are all slightly less than a right angle (90 degrees) and none of them are obtuse angles- they're all acute. Basically, the answer is 80.

And if I'm wrong, I am so sorry! I still sometimes get confused on these type of questions. Well, I hope its right and I hope that if it is, it was helpful! Have a lovely day!! :)

5 0
2 years ago
Find the circumference of the object
ivolga24 [154]

Answer:

28.26

Step-by-step explanation:

circumference= 2πr or πd (diameter)

9 x 3.14=28.26

6 0
1 year ago
HELLLLLLLLLLLPPPPPPPPPP
natka813 [3]
Answer
y = 4x + 4

slope: (36-16)/(8-3)=4
intercept: 16=3(4)+b -> b=4
7 0
2 years ago
What is the area of a circle with a radius of 21 cm?
Rzqust [24]
The area is 1,385,442


Hope that helps
7 0
2 years ago
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