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IceJOKER [234]
3 years ago
8

Solve this quadratic equation using the quadratic formula x^2 + 8x - 5 = 0

Mathematics
1 answer:
kompoz [17]3 years ago
3 0

Answer:

x =  − 4 ± √ 21

Step-by-step explanation:

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7.2 - 3 C equals 2 c - 2
dolphi86 [110]

Answer:

9.2/5= C

Step-by-step explanation:

7.2- 3C = 2C -2     First, add the 2 on the other side to isolate 2C on one side

+2                   +2

9.2 - 3C = 2C       Next, add 3C to the other side        

+3C   +3C

9.2 = 5C                Finally divide both sides by 5 to find the value of C

9.2/5= 5C/5

9.2/5 = C     by dividing by 5 the 5 cancels out and you're left with the C value

5 0
2 years ago
When does it reach maximum height?<br><br> H(t)=-16t^2+112t+288
ivolga24 [154]

Answer:

484 feet  maximum

Step-by-step explanation:

H(t)=-16t^2+112t+288

The maximum height occurs at the vertex of this graph.  

Let us find the vertex.

vertex x-coordinate = -b/2a

x =  -b/2a = -(112)/ (2*-16) =  7/2 sec.

H(7/2) = - 16 *(7/2)^2 + 112*(7/2) +  288

H(7/2) = -196 + 392 + 288 = 484 feet ..

5 0
3 years ago
What is the value of x
Effectus [21]
4x+2x=180
6x= 180
Divide by 6
X= 30
7 0
3 years ago
Equations that equal 12
crimeas [40]
I hope this helps you


12=3.4=3.2^2
6 0
3 years ago
Read 2 more answers
What’s 4x + 7y + 4 + 5x + y
fomenos

Hello!

Okay, so first we need to add like terms... so first, add the terms with the same variables. That gives us:

9x + 7y + 4 + y

Now add 7y and y

That gives us:

9x + 8y + 4

This can't be added anymore... this is as far as we can go because they are no longer like terms.

6 0
2 years ago
Read 2 more answers
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