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Svetach [21]
3 years ago
14

7. Given x = -x^2-3x+10

Mathematics
1 answer:
beks73 [17]3 years ago
6 0

Step-by-step explanation:

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Given triangle DEF where ∠D = (7b +1)∘, ∠E = (2b + 1)∘, and ∠F = ( b + 8)∘. What is the measure of ∠E?
____ [38]
<h3>Answer:  35 (choice C)</h3>

=============================================

Explanation:

For any triangle, the three interior angles always add to 180.

D+E+F = 180

(7b+1) + (2b+1) + (b+8) = 180

(7b+2b+b) + (1+1+8) = 180

10b+10 = 180

10b = 180-10

10b = 170

b = 170/10

b = 17

Use this value of b to find the three angle measures

  • D = 7b+1 = 7*17+1 = 119+1 = 120
  • E = 2b+1 = 2*17+1 = 34+1 = 35 degrees
  • F = b+8 = 17+8 = 25

As a check,

D+E+F = 120+35+25 = 120+60 = 180

which helps confirm the correct answers.

3 0
3 years ago
3 +17 p + 2 - P<br> Simply each expression by combing like terms
natita [175]
3+17p+2-p
=3+2+17p-p
=5+16p

hope this helps!!
7 0
2 years ago
Cathy has 16 meters of fencing to make a rectangular pen for some rabbits what dimensions will give the maximum area?
Travka [436]
The max occurs when length=width

so
perimiter=16
and L=W
P=2(L+W)
16=2(L+L)
16=2(2L)
16=4L
4=L

the dimentions are length and width are 4 meters
aera will be 16 square meters
6 0
3 years ago
jasmine bought 7 yards of fabric. The total cost was $45.43. What was the average cost per yard of the fabric she bought
torisob [31]
The answer would be $6.49.
4 0
3 years ago
Find the 12th term of following geometric sequence 5, 20,80, 320,
vesna_86 [32]
5, 20, 80, 320, 1280, 5120, 20480, 81920, 327680, 1310720, 5242880, 20971520

The 12th term would be 20,971,520
Everything is being multiplied by 4 each time
5 0
3 years ago
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