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sesenic [268]
3 years ago
14

4x^2-19x-5=0 Solve by factoring

Mathematics
2 answers:
uysha [10]3 years ago
5 0

Answer:

x= −1/4 or x = 5

Step-by-step explanation:

Step 1: Factor left side of equation.

(4x+1)(x−5)=0

Step 2: Set factors equal to 0.

4x+1=0 or x−5=0

Answer:

x= −1/4 or x = 5

Troyanec [42]3 years ago
4 0

Answer:

x = -¼ OR x = 5

Step-by-step explanation:

4x² - 19x - 5 = 0

(4x + 1) (x - 5)

4x + 1

4x = - 1

x = -¼ (-0.25)

---------

x - 5

x = 5

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VMariaS [17]

Answer:820

Step-by-step explanation:

Since he got $500 the first week multiply 80x4 which is 320+500 is 820$

4 0
4 years ago
What is the difference, in hours and minutes between these times?<br>a)11 25 and 14 10​
Tresset [83]

Answer:

2 hours and 45 minutes is the correct answer for this question

8 0
3 years ago
Terry invested money in a biotech stock whose growth is modeled by the function f(x) = 0.01(2)x, where x represents number of da
strojnjashka [21]

Answer:

The average rate of change is 1.275

Step-by-step explanation:

The average rate of change of f(x) from x=a to x=b is given by:

\frac{f(b)-f(a)}{b-a}

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The average rate of change from day 2 to day 10 is given by:

\frac{f(10)-f(2)}{10-2}

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The average rate of change becomes:

\frac{10.24-0.04}{8}

=\frac{10.2}{8}=1.275

3 0
3 years ago
Read 2 more answers
The measures of the exterior angles of an octagon are x°, 2x", 3x°, 4x °, 6x°, 7xº,
Neporo4naja [7]

Answer:

216

Step-by-step explanation:

Total of octagon amount is 1080, so set it equal.

x + 2x + 3x + 4x + 6x + 7x + 8x + 9x = 1080

45x = 1080

/45     /45

x = 24

Then plug in for largest number.

9 (24) = 216

8 0
3 years ago
Find x if the angles of a quadrilateral are 2x, 3x, 4x, and 5x
elena-14-01-66 [18.8K]
To solve this we are going to take advantage of the fact the the sum of the interior angles of a quadrilateral is always 360°. So, we can add up all our angles and set them equal to 360°:
2x+3x+4x+5x=360
Now, we just need to solve for x:
2x+3x+4x+5x=360
14x=360
x= \frac{360}{14}
x= \frac{180}{7}

We can conclude that the value of x in our quadrilateral is \frac{180}{7}°, or we can conclude that x is approximately 25.7° (in decimal form).
5 0
3 years ago
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