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3 years ago

Which two values of x are roots of the polynomial below? 2+5=7

Mathematics

1 answer:

Marat540 [252]3 years ago

3 0

Answer:

i dont know

Step-by-step explanation:

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Cierra has 3 more than one half as many purses as Aisha. Define a variable and write an expression to represent the number of pu

andreev551 [17]

1/2x + 3 1/2(12) + 3 6+3=9 X= number of purses

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3 years ago

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Can someone help me figure out what 40% of 65 is?

Akimi4 [234]

Answer:

Step-by-step explanation:

Convert 40% to a decimal

40% = 0.4

Multiply 0.4 with 65

0.4 • 65 = 26

40% of 65 is 26

7 0

3 years ago

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The tables represent two linear functions in a system,

Alenkasestr [34]

Answer:

Step-by-step explanation:

The slope-intercept form of an equation of a line:

$y=mx+b$

m - slope

b - y-intercept

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

First table:

(-4, 26), (0, 10) → b = 10

$m=\dfrac{10-26}{0-(-4)}=\dfrac{-16}{4}=-4$

$\boxed{y=-4x+10}$

Second table:

(-4, 14), (0, 2) → b = 2

$m=\dfrac{2-14}{0-(-4)}=\dfrac{-12}{4}=-3$

$\boxed{y=-3x+2}$

We have the system of equations:

$\left\{\begin{array}{ccc}y=-4x+10&(1)\\y=-3x+2&(2)\end{array}\right\\\\\text{Put (1) to (2):}\\\\-4x+10=-3x+2\qquad\text{subtract 10 from both sides}\\-4x=-3x-8\qquad\text{add 3x to both sides}\\-x=-8\qquad\text{change the signs}\\x=8\\\\\text{Put the value of x to (2):}\\\\y=-3(8)+2\\y=-24+2\\y=-22$

5 0

3 years ago

Please help... #18 and #28

Vesna [10]

I hope this helps you

5 0

3 years ago

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Don't get any of this

Serga [27]

Answer:

the value of the printer is going down over the years because it is getting older. all you need to do for this is label the x and y axis with the nbers on the graph and then fill it in

has ur teacher gone over how to fill in graphs yet?

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3 years ago

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