3 years ago

Finding the expression

Mathematics

1 answer:

vekshin13 years ago

4 0

If you combine like terrms its easy, you just have to -5+5+6y, 6y=16 y=2.66666667

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Can someone please help?

Helga [31]

Answer:

(-2,1) (-3,0)

Step-by-step explanation:

It hits on the line

7 0

2 years ago

Write a quadratic equation with the given roots. Write the equation in the form of ax^2+bx+c=0 where a b and c are integers

Bas_tet [7]

You haven't provided the required roots, but I can tell you how to do this kind of exercises in general.

If the $x^2$ coefficient is 1, i.e. the equation is written like $x^2+bx+c=0$ , then you can say the following about the coefficients b and c:

$b$ is the opposite of the sum of the roots
$c$ is the multiplication of the roots.

So, for example, if we want an equation whose roots are 4 and -2, we have:

$4+(-2) = 4-2 = 2 \implies b = -2$
$4 \cdot (-2) = -8 \implies c = -8$

So, the equation is $x^2-2x-8=0$

If your roots are rational, you can work like this: suppose you want an equation with roots 3/4 and 1/2. You have:

$\dfrac{3}{4}+\dfrac{1}{2} = \dfrac{3}{4}+\dfrac{2}{4} = \dfrac{5}{4} \implies b = -\dfrac{5}{4}$
$\dfrac{3}{4} \cdot \dfrac{1}{2} = \dfrac{3}{8} \implies c = \dfrac{3}{8}$

And so the equation is

$x^2 - \dfrac{5}{4} + \dfrac{3}{8} = 0$

In order to have integer coefficients, you can multiply both sides of the equation by 8:

$8x^2 - 10 + 3 = 0$

5 0

3 years ago

pablo is making a sandwich for a picnic.He has 32 slices of turkey and 24 slices of cheese.If pablo wants to make the maximum nu

mezya [45]

You find the HCF which is 8
you divide 32 and 24 by 8
which will give you 4 and 3 respectively
therefore there will be 4 slices of turkey and 3 slices of cheese in each sandwich.
and there will be 8 sandwiches...

6 0

3 years ago

At a party, everyone shook hands with everybody else. There were 66 handshakes. How many people were at the party?

BARSIC [14]

Total handshakes will be $\\2^{n} = 2^{66}$

4 0

3 years ago

What is the profit the performer makes at a performance where 8 people attend?

otez555 [7]

120 : 8 = 15
and 15 x 20 = 300, so the answer is C

4 0

3 years ago