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vichka [17]
3 years ago
14

20x^2 -11x -4 = 0 what are the solutions for this equation

Mathematics
1 answer:
mezya [45]3 years ago
8 0
X= 4/5, - 1/4
Hope it helps
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Which equation can be used to solve the problem?
viktelen [127]

Answer:

see below

Step-by-step explanation:

75%   of what number is 150

75          150

----- =  ---------

100       x

75*2 = 150

So multiply the left by 2/2

75*2          150

----- =  ---------

100*2       x

150

------

200

5 0
3 years ago
What is the approximate area of the figure?
Valentin [98]

Answer:

Answer D (2206.5 ft^2) is closest to the calculated answer 2206.85 ft^2.

Step-by-step explanation:

We can break up this figure into a 30 ft by 50 ft rectangle and a circle of diameter 30 ft.

The area of the rectangular part is A1 = (30 ft)(50 ft) = 1500 ft^2.

The area of the circular part is A2 = π(15 ft)^2 = 706.9 ft^2

Thus, the total area is approx A1 + A2, or 2206.86 ft^2 (Answer D)

8 0
3 years ago
Pls help with algebra 2 semester 1 2.4.1 quiz
kenny6666 [7]

Answer:

Step-by-step explanation:

6 0
3 years ago
Please help me <br> 10 points
mote1985 [20]

1. 4x = 7(x - 3)       1.Given

4x = (7)(x) + (7)(-3)

2. 4x = 7x - 21       2.Distributive property

4x - 7x = 7x - 7x - 21

3. -3x = -21            3.Subtraction property of equality

-3x : (-3) = -21 : (-3)

4. x = 7                  4.Division property of equality

6 0
3 years ago
In a regional high school swim meet, women’s times (in seconds) in the 200-yard freestyle ranged from 108.5 to 140.6. Estimate t
avanturin [10]

Answer: Estimated the standard deviation α  = 5.35

Step-by-step explanation:

According to Empirical rule, the largest value is approximately:

ц + 3α

And the smallest value is approximately:

ц + 3α

Based on the given figures in the question, we can say

ц + 3α = 140.6

ц - 3α = 108.5

Now subtracting these two; we have

ц + 3α - ( ц - 3α  ) = 140.6 - 108.5

ц + 3α - ц + 3α = 32.1

6α = 32.1

α = 32.1 / 6

α = 5.35

Estimated the standard deviation α  = 5.35

6 0
4 years ago
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