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2 years ago

Please help me with this.

Mathematics

1 answer:

Tcecarenko [31]2 years ago

8 0

I dont understand it sorry maybe next time sorry tho

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Factorise the following expressions 5x^2-25xy

Natali [406]

Answer: 5x ( x - 5y )

Step-by-step explanation:

3 0

2 years ago

A game has a deck of cards with 10 red cards and 4 blue cards. You randomly choose one card and without replacing it choose anot

Elza [17]

Answer:

21.97%

Step-by-step explanation:

5 0

2 years ago

What is the solution of √x-5 = x-11

PIT_PIT [208]

Hey!

To solve x in this equation we must first add five to both sides to get $\sqrt{x}$ on its own.

Original Equation :
$\sqrt{x} - 5 = x - 11$

New Equation {Added 5 to Both Sides} :
$\sqrt{x} =x-6$

Now we must square both sides of the equation.

Old Equation :
$\sqrt{x} =x-6$

New Equation {Changed by Squaring Both Sides} :
$x= x^{2} -12x+36$

And now we must solve the new equation.

Step 1 - Switch sides
$x^{2} -12x+36=x$

Step 2 - Subtract x from both sides
$x^{2} -12x+36-x=x-x$

Step 3 - Simplify
$x^{2} -13x+36=0$

Now we need to solve the rest of the equation using the quadratic formula.

$\frac{-(-13)+ \sqrt{(-13) ^{2}-4*1*36 } }{2*1}$

${13+ \sqrt{(-13)^{2}-4*1*36 }=13+ \sqrt{25}$

$\frac{13+ \sqrt{25}}{2}$

$\sqrt{25}=5$

$\frac{13+5}{2}$

$\frac{18}{2}$

9

$\frac{-(-13)- \sqrt{(-13) ^{2} -4*1*36} }{2*1}$

4

So, this means that in the equation $\sqrt{x} -5=x-11$ , x = 9 and x = 4.

Hope this helps!

- Lindsey Frazier ♥

4 0

2 years ago

Gabriella was offered a job after college earning a salary of $50,000. She will get a

inn [45]

Answer:the 3 firts and the last one

Step-by-step explanation:

I just did it

7 0

2 years ago

Simplify (-7/8)(-3/4). O 6/7 o 2132 0-2132

Andrews [41]

(-7/8)(-3/4)

multiply the numerators together

(-7)(-3)=21

multiply the denominators together

(-8)(-4)=32

answer:

21/32

7 0

3 years ago

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