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hichkok12 [17]
3 years ago
10

USING FORMULAR METHOD SOLVE4x²+9x-9=0​

Mathematics
1 answer:
emmasim [6.3K]3 years ago
7 0

Answer:

Exact form: x = 3, -3/4 or Decimal form: x = .75, -3

Step-by-step explanation:

Move all terms to the left side and set equal to zero. Then set each factor equal to zero.

Exact form:

x = 3/4, -3

Decimal form:

x = .75, -3

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For which values of x is the inequality 3(1 + x) < x + 6 true?
jenyasd209 [6]

Answer:

A

Step-by-step explanation:

The values which make an inequality true are the solutions to the inequality found using inverse operations.

3(1 + x) < x + 6

3 + 3x < x + 6

3 + 2x < 6

2x < 3

x < 3/2

3/2 is the value 1.5 so x must be less than 1.5. Only 0 and 1 make it true in the options given.

3 0
3 years ago
Many smoke detectors contain:
Yanka [14]

Answer:

Option B, Americium-241, is the right answer.

Step-by-step explanation:

  • A device which senses smoke usually as an indicator of fire is known as a smoke detector.
  • The two most common types of smoke detectors are the Ionization chamber and photoelectric smoke indicators.
  • Many of these smoke detectors comprise some amount of americium-241, which is a radioactive substance.
  • These smoke detectors respond immediately to fires that give off some smoke.
3 0
4 years ago
This table gives a few (x,y) pairs of a line in the coordinate plane.(34, -52), (51,-65), (68, -78).What is the y-intercept of t
Nutka1998 [239]

Answer:

(0,-26)

Step-by-step explanation:

Write the equation of the line in the slope-intercept form:

1. The slope of the line is

\dfrac{-65-(-52)}{51-34}=-\dfrac{13}{17}

2. The equation of the line is

y-(-52)=-\dfrac{13}{17}(x-34)\\ \\y+52=-\dfrac{13}{17}x+26\\ \\y=-\dfrac{13}{17}x-26

Now, find the y-intercept, substitute x = 0:

y=-\dfrac{13}{17}\cdot 0-26\\ \\y=-26

6 0
3 years ago
Whats the square root of 25/441
s344n2d4d5 [400]

Answer:

0.01133786848

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
I need help with this math question!!! Thank you in advance
NemiM [27]

Answer:

Pretty sure answer is D.

Step-by-step explanation:

Hope this helps!

8 0
3 years ago
Read 2 more answers
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