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Ede4ka [16]
3 years ago
5

6-3 Pleass helpppppp

Mathematics
1 answer:
Rufina [12.5K]3 years ago
7 0

Answer:

3

Step-by-step explanation:

-3 is 3

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Prove that the lengths of the diagonals of an isosceles trapezoid are equal
SOVA2 [1]
AD || BC 
<span>• AB = CD </span>
<span>• ∠BAD = ∠CDA (a given condition ∵ ABCD is an isosceles trapezium) </span>

<span>The diagonals AC and BD create two ∆'s: ∆ABD, and ∆ACD </span>

<span>The two ∆'s are congruent (SAS).  </span>
 
<span>(S): AB = CD </span>
<span>(A): ∠BAD = ∠CDA 
</span><span>(S): AD = DA (common side) </span>
<span>
The corresponding sides of the two ∆'s, BD and AC, are also congruent. </span>
<span>(the two diagonals of the trapezium/trapezoid) 
</span>
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3 years ago
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I need help with this question please
Mice21 [21]

Answer:

210 mph

Step-by-step explanation:

speed of jet = x

headwind: speed = x - 27

time taken = 1134.6/(x - 27)

tailwind: speed = x + 27

time taken = 1469.4/(x + 27)

same amount of time:

1134.6/(x - 27) = 1469.4/(x + 27)

Cross multiply,

1134.6(x + 27) = 1469.4(x - 27)

1134.6x + 30634.2 = 1469.4x - 39673.8

334.8x = 70308

x = 210 mph

4 0
2 years ago
How do you add fractions? 8 1/2 + 7 1/4
son4ous [18]
Make the fractions into common denominators
turn 1/2 into 2/4 (common denominator of 4 with 1/4)
then add them
8+7 is 15
1/4+2/4 is 3/4
15+3/4 is 15 3/4
5 0
3 years ago
Determine coefficients a and b such that p(x)=x2 ax b satisfies p(1)=5 and p′(1)=11.
Murrr4er [49]
p(x)=x^2+ax+b
p'(x)=2x+a

Given that p'(1)=11, you have

p'(1)=2+a=11\implies a=9

and given that p(1)=5, you have

p(1)=1+9+b=5\implies b=-5

So you get

p(x)=x^2+9x-5
4 0
3 years ago
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