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kodGreya [7K]
3 years ago
9

GEOMETRY QUESTION! Please Help

Mathematics
1 answer:
Nataly_w [17]3 years ago
5 0
142cm of air I think... I divided 142 buy 2. also then added 71 and 71 and multiplied buy 2 all were same answer
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7x-5y=-15 and -14x+7y=0 Solve by elimination
geniusboy [140]

Answer: (5,10)

Step-by-step explanation:

multiply first equation with 2 and add it to second to eliminate X

7x-5y=-15  //*2

14x-10y=-30

-14x+7y=0

----------------

-3y=-30

y=-30/-3

y=10

7x=50-15

7x=35

x=35/7

x=5

4 0
3 years ago
Triangle ABC has a right angle at angle c and pounts e,d and f are midpoints. Line df = 3 and line segment ab= 10. What is the l
Leni [432]
See the attached figure.
========================
AB = 10 , FD = 3
∵ D is the midpoint of AB, and F is the mid point of CB
∴ FD // AC , FD = 0.5 AC
∵ Δ ABC is a right triangle at C
∴ FD ⊥ BC
∴ BD = 0.5 AB = 5
∴ in Δ FDB ⇒⇒ BF² = BD² - FD² = 5² - 3² = 16
∴ BF = √16 = 4
∵ F is the mid point of CB 
∴ CF = BF = 4 , and CB = 2 BF = 2*4 = 8
∵ D is the midpoint of AB, and E is the mid point of AC
∴ DE // CB  , and DE = 0.5 CB = 0.5 * 8 = 4

∴ T<span>he length of line ED is 4
</span>



8 0
3 years ago
Draw a rectangle with an area of 12 centimeters and a perimeter of 16 centimeters
lidiya [134]
All I can tell you is 12x16=192
7 0
3 years ago
4 Compare 5.269 and 5.038.
Hunter-Best [27]

Answer:

the answer is B

Step-by-step explanation:

4 0
3 years ago
Find m These questions getting hard
pickupchik [31]

Answer:

the

Step-by-step explanation:

it's fairly easy actually. You just have to use sin

3 0
3 years ago
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