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ziro4ka [17]
3 years ago
12

5-2x2=-15 what is the answer

Mathematics
2 answers:
saw5 [17]3 years ago
5 0

Answer:

20

Step-by-step explanation:

5 - 2 {x}^{2}  =  - 15 \\  =  >   - 2{x}^{2}  =  - 15 - 5 \\  =  >  \: 2 { x}^{2}  = 20 \\  =  >  \:  {x}^{2} = 10 \\  =  >  \: x =  \sqrt{10}

liq [111]3 years ago
4 0

Answer:

{-5-2*x^2-(-15)=0}

Step-by-step explanation:

That's the answer i believe??

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What happens to the graph of the line y = mx + b if the value of b is decreased?
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Answer:

The lines moves lower.

Step-by-step explanation:

The steepness of a line is related to the slope, m.

b is the y-intercept, not the slope.

b is where the line intersects the y-axis.

Changing b changes the vertical position of the line.

Answer: The lines moves lower.

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3. The positive root of 154 is located between which two consecutive integer values?
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Answer:

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Step-by-step explanation:

answer is 12.4

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Raul is making a scale model of an airplane that has a wingspan of 44 feet. If Rauls scale model is 1/16 the size of the actual
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Help!?Who can help me with this?
Sonbull [250]
What he/she said is correct
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3 years ago
Show all work to solve 3x^2 + 5x − 2 = 0
Ratling [72]

Answer:

x=1/3 or x=−2

if i can be brainliest that would be great

Step-by-step explanation:

Step 1: Add 2 to both sides.

3x^2+5x−2+2=0+2

3x^2+5x=2

Step 2: Since the coefficient of 3x^2 is 3, divide both sides by 3.

3x^2+5x/3=2/3

x^2+5/3x=2/3

Step 3: The coefficient of 5/3x is 5/3. Let b=5/3.

Then we need to add (b/2)^2=25/36 to both sides to complete the square.

Add 25/36 to both sides.

x^2+5/3x+25/36=2/3+25/36

x^2+5/3x+25/36=49/36

Step 4: Factor left side.

(x+5/6)^2=49/36

Step 5: Take square root.

x+5/6=±√49/36

Step 6: Add (-5)/6 to both sides.

x+5/6+ −5/6=

−5/6±√49/36x=−5/6±√49/36x=

1/3 or x=−2

3 0
3 years ago
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