2 years ago

Hi im qutting. thanks for all the memories

Mathematics

1 answer:

Roman55 [17]2 years ago

7 0

Answer:

pls don't quite .

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Find 4ab when (a+b)=15 and (a-b)=12

Volgvan

A + b = 15 ..... eq 1
a – b = 12 ...... eq 2

So a = 15 – b
Substitute in eq 2 :

15 – b – b = 12
15 – 2b = 12
–2b = 12 – 15
b = 1.5

So a = 15 – 3/2 = 13.5

4ab = 4 x 13.5 x 1.5 = 81

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3 years ago

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When david emptied the collection canister of his vacuum cleaner, he found nickels and quarters among the other of the canister.

Ugo [173]

he has 9 quarters and 12 nickles.

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3 years ago

What is the slope of the line that passes through the given points (3 2) and (5 12)

Anika [276]

Find slope by finding the change in y over the change in x, or rise over run.

12-2/5-3
10/2
5

Final answer: A

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3 years ago

Solve. 1/4 x < -8 PLEASE

Amiraneli [1.4K]

Answer:

x<-32

Step-by-step explanation:

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3 years ago

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The equation <img src="https://tex.z-dn.net/?f=2m%5E%7B2%7D-1m-8%3D0" id="TexFormula1" title="2m^{2}-1m-8=0" alt="2m^{2}-1m-8=0"

Elza [17]

Answer:

N = 1
M = 4
D = 65

Step-by-step explanation:

The given equation is of the form ...

ax² +bx +c = 0

where a=2, b=-1, c=-8.

The quadratic formula gives the solution to the above equation as ...

$x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

So, for your equation, the solution is ...

$m=\dfrac{-(-1)\pm\sqrt{(-1)^2-4(2)(-8)}}{2(2)}=\dfrac{1\pm\sqrt{65}}{4}$

Comparing this to the form ...

$m=\dfrac{N\pm\sqrt{D}}{M}$

we see ...

N = 1
M = 4
D = 65

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3 years ago