3 years ago

For her house-painting job, Erica can be paid in one of two way:

Mathematics

1 answer:

Igoryamba3 years ago

6 0

Answer:

plan B would be best if x is greater than or equal to 26

Step-by-step explanation:

250 + 10x = 20x

250 = 10x

25 = x

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The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number? x = –1 and x =

andrey2020 [161]

we have

$f(x)=x^{2}-2x-3$

Find the roots

Equate the function to zero

$x^{2}-2x-3=0$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$x^{2}-2x=3$

Complete the square. Remember to balance the equation by adding the same constants to each side.

$x^{2}-2x+1=3+1$

$x^{2}-2x+1=4$

Rewrite as perfect squares

$(x-1)^{2}=4$

Square root both sides

$(x-1)=(+/-)2$

$x=1(+/-)2$

$x=1+2=3$

$x=1-2=-1$

therefore

<u>the answer is</u>

$x=3$

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3 years ago

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What is the midpoint of (-7,5)(7,3)

Naddika [18.5K]

Answer:

(1,4)

Step-by-step explanation:

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3 years ago

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Arranging like terms; solve the linear system using eliminationlly - 3x = 18- 3x = -16y + 33

DENIUS [597]

Solution

For this case we can do the following:

11y - 3x = 18

16y -3x = 33

We can multiply the first equation by -1 and we got:

-11y +3x =-18

16y -3x = 33

_______________

16y -11y = 33-18

5y = 15

y= 15/5 = 3

And then solving for x we got

x = -(18 -11*3)/ 3= -15/3 = 5

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1 year ago

A softball backstop that is 10 feet high casts an 8-foot shadow at the same time a light pole casts a 20-foot shadow. The height

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I'm just getting points

Step-by-step explanation:

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3 years ago

30 points for anyone that can solve the question

marusya05 [52]

The solution to this problem is 5/2a^2b^5

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3 years ago