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kiruha [24]
3 years ago
11

Triangle DEF is an isosceles, so DEF = DFE.

Mathematics
2 answers:
Katarina [22]3 years ago
8 0

Answer:

m∠CFD=105\°

Step-by-step explanation:

we know that

m∠CFD+m∠DFE=180\° ------> by supplementary angles

we have

that

m∠DFE=m∠DEF=75\°

so

m∠CFD+75\°=180\°

m∠CFD=180\°-75\°=105\°

Ratling [72]3 years ago
4 0
I believe its 105 degrees
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20 POINTS!!!!
gregori [183]

Answer:

135 ft^2

Step-by-step explanation:

7yd = 7*3 feet = 21 feet

area \: of \: trapezoid \\  =  \frac{1}{2} (15 + 21) \times 7.5 \\  =  \frac{1}{2}  \times 36 \times 7.5 \\  = 18 \times 7.5 \\  = 135 {feet}^{2}

4 0
2 years ago
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8 1/4 divied by d = 2/11 what is d
Luda [366]

Answer:

d = 363/8

Step-by-step explanation:

Let's write this as a fraction:

   8 1/4          2

------------- = -------

      d            11

One way in which this could be approached would be to interchange 'd' and '2:'

   8 1/4          d                   33             d

------------- = -------      or    -------- =  ---------

      2            11                   4(2)          11

           

Multiplying both sides by 11 isolates d:

33(11)                     363

-------- = d, or d = ----------

   8                           8

7 0
2 years ago
I need help please for my test
Umnica [9.8K]

original figure (-7,-6)

final figure (-7,2)

7 0
2 years ago
Pls help i will give brainliest:
kobusy [5.1K]

Answer:

Its D

Step-by-step explanation:

7 0
2 years ago
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How long is the unpainted strip of each part of the road
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208/16 = 13 yards per part

13-4 = 9 yards of unpainted strip per strip

9*16 = 144 of unpainted strips
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