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garik1379 [7]
3 years ago
14

PLs help..............

Mathematics
2 answers:
34kurt3 years ago
8 0

3/5 or 60% of the tank will be filled in an hour.

DiKsa [7]3 years ago
5 0
3/5 of a tank will be filled in an hour
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A number is 11 less than 3 times another number. The sum of the numbers
Mila [183]

Step-by-step explanation:

this is simple use it and enjoy

8 0
3 years ago
Read 2 more answers
Use inverse functions where needed to find all solutions of the equation in the interval [0, 2π). (Enter your answers as a comma
Zina [86]
I'm assuming you meant:

tan^{2}x + tanx - 30 = 0
Let u = tan(x)

Thus, we can rewrite it into a quadratic.

u^{2} + u - 30 = 0
(u + 6)(u - 5) = 0
u = -6 or u = 5

Hence, tan(x) = -6 or tan(x) = 5
x = tan^{-1}(-6) or x = tan^{-1}(5)

Rewriting it in general form, we get:
x = \pi \cdot n + tan^{-1}(5), n \in Z
x = \pi \cdot n - tan^{-1}(6), n \in Z

From there, you can find your solutions from [0, 2\pi)
6 0
4 years ago
If L is the midpoint of KM and KM =5x-6 and LM=2x+4 what is the value of x?
ella [17]

With these values x = 14.

In order to find this, we must note that LM will be half of KM (since L is the midpoint). Because we know this, we also know that we can multiply LM by 2 and set equal to KM.

2LM = KM

2(2x + 4) = 5x - 6

4x + 8 = 5x - 6

8 = x - 6

14 = x

7 0
4 years ago
Factor completely<br> 486+108x+6x^2<br><br> Thank you!
viktelen [127]

Answer:

6(x + 9) (x + 9)

or

6 (x+9)^{2}

Step-by-step explanation:

468 + 108x + 6x^{2} \\6x^{2} +108x + 468

Greatest common factor of 6, 108, and 486:

6 x 1 = 6

6 x 18 = 108

6 x 81 = 486

GCF: 6

so:

6(x^{2} +18x +81)

x^{2} +18x + 81

factors to:

(x + 9) (x + 9)

because:

9 x 9 = 81

9 + 9 = 18

So:

It factors completely too:

6(x + 9) (x + 9)

or

6 (x+9)^{2}

6 0
3 years ago
Six less than six timesa number is 12
vovangra [49]
Six (6) less than (subtraction) six (6) times (multiplication) a number (n) is (=) 12.

6n - 6 = 12  

To solve, add 6 to both sides

6n = 18   Dviide both sides by 6
  n = 3
5 0
3 years ago
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