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True [87]
3 years ago
11

Solve the equation. x(4x−11)=15

Mathematics
1 answer:
nexus9112 [7]3 years ago
5 0
X(4x-11)=15
+11 +11
5x=26
/5 /5
x=5.2

hope this helps :)
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A boy is playing a ball in a garden surrounded by a wall 2.5 m high and kicks the ball vertically up from a height of 0.4 m with
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Answer:

2.54 seconds

Step-by-step explanation:

We can use the following equation to model the vertical position of the ball:

S = So + Vo*t + a*t^2/2

Where S is the final position, So is the inicial position, Vo is the inicial speed, a is the acceleration and t is the time.

Then, using S = 2.5, So = 0.4, Vo = 14 and a = -9.8 m/s2, we have that:

2.5 = 0.4 + 14*t - 4.9t^2

4.9t^2 - 14t + 2.1 = 0

Solving this quadratic equation, we have that t1 = 2.6983  s and t2 = 0.1588 s.

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t1 - t2 = 2.6983  - 0.1588 = 2.54 seconds

6 0
3 years ago
Given that the function graphed is f(x), what is f(-2)?
Artist 52 [7]

Answer:

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Step-by-step explanation:

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5 0
3 years ago
4. The amount of money in Dave's checking account for the first week of
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Answer: Mean- 547.3

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6 0
3 years ago
A) 5<br> 11 + 4<br> 3<br> add the following rational number
mel-nik [20]

Step-by-step explanation:

the question is not correct

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2 years ago
Please help me. who ever answers first will be marked brainless I need the answer for number 2
kiruha [24]
Exact form 1053/16
Decimal form 65.8125
mixed Number form 65 13/16
4 0
3 years ago
Read 2 more answers
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