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Ierofanga [76]
3 years ago
12

What are the solutions to the equation?22 5x 12-0

Mathematics
2 answers:
saveliy_v [14]3 years ago
6 0
The equestion is
2x^2-5x-12=0
we can either try to factor, or use quadratic formula
trial and errot
(x-4)(2x+3)=0
set to zero
x-4=0
x=4
2x+3=0
2x=-3
x=-3/2

x=-3/2 or 4
Lena [83]3 years ago
3 0

2x²-5x-12=0

Factor left side of the equation

(2x+3)(x-4)=0

Set factors equal to 0

2x+3=0 or x-4=0

x=-3/2 or x=4

I hope that's help !

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What is the coordinate of point P that lies along the directed line segment from Q(2, 5) to R(7, 12) and partitions the segment
Wittaler [7]

Answer:

Option (3). (5, 9.2)

Step-by-step explanation:

If Point P divides the line segment QR in the ratio of m : n.

Let the coordinates of the point P are (x, y)

Since coordinates of the point P are given by,

x = \frac{m(x_2)+n(x_1)}{m+n}

y = \frac{m(y_2)+n(y_1)}{m+n}

Where (x_1, y_1) and (x_2,y_2) are the ordered pairs representing points Q and R.

If (x_1,y_1) represents (2, 5) and (x_2,y_2) represents (7, 12),

Coordinates of point P(x, y) which divides the segment in the ratio of 3:2.

x = \frac{3(7)+2(2)}{3+2}

x = \frac{25}{5}=5

y = \frac{3(12)+2(5)}{3+2}

y = \frac{46}{5}=9.2

Therefore, Point P will be represented by (5, 9.2)

Option (3) will be the answer.

3 0
3 years ago
Are the ratios 3:4 and 2:20 equivalent?
ryzh [129]

Answer:

no

Step-by-step explanation:

5 0
3 years ago
A sequence is defined recursively by the following rules: f(1)=3f(n+1)=2⋅f(n)−1 Which of the following statements is true about
Radda [10]

Answer:

f(2)=5

f(5)=33

Step-by-step explanation:

The given formula, that recursively defines the sequence is

f(1) = 3 \\ f(n + 1) = 2f(n) - 1

When n=1, we obtain;

f(1+ 1) = 2f(1) - 1 \\ f(2) = 2 \times 3 - 1 \\ f(2) = 6 - 1 \\ f(2) = 5

When n=2, we get:

f(2+ 1) = 2f(2) - 1 \\ f(3) = 2 \times 5 - 1 \\ f(3) = 10 - 1 \\ f(3) = 9

When n=3,

f(3 + 1) = 2f(3) - 1 \\ f(4) = 2f(3) - 1 \\ f(4) = 2 \times 9 - 1 \\ f(4) = 18 - 1 \\ f(4) = 17

When n=4

f(4 + 1) = 2 f(4) - 1 \\ f(5) = 2 \times 17 - 1 \\ f(5) = 34 - 1 \\ f(5) = 33

When n=5,

f(6) = 65

4 0
3 years ago
Can someone explain how u can write a percent in simplest form?
mash [69]

Answer:

The answer is 1 1/4 or a.

Step-by-step explanation:

Basicallly percents are based of 100% so there is a 100% which would be a whole then there is only 25% and if you take 4 quarters and each quarter is 25 cents and there is 4 quarters in a whole that would be 1/4. You add the 1 whole and the 1/4 to get 1 1/4.

Hope this helps, tried to explain it in the best way I can.

7 0
3 years ago
Simplify (3a^4b^3)^3
tatiyna

Answer:

Step-by-step explanation:

(3a^4b^3)^3

=3^3a^4*3b^3*3

=27a^12b^9

7 0
3 years ago
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