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3 years ago

Number line model simplify 2+(-8)

Mathematics

1 answer:

alexandr402 [8]3 years ago

7 0

So (-8) =. + 8+2= +10

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According to the National Weather Service, the average monthly high temperature in the Dallas/Fort Worth, Texas area from the ye

avanturin [10]

Answer:

b. y = 20.077 sin(0.500x - 1.959) + 67.577

Step-by-step explanation:

<u>The easiest way to solve</u>

1. Plot the points for one year
2. Add the functions to same graph and compare

This gave us the option B as the best fit line

<em>See the graph below</em>

7 0

3 years ago

Read 2 more answers

What the hecka doodle

Mashcka [7]

Answer:

{-2,4,8}

Step-by-step explanation:

The range of a function represents all of the y-values.

In this case, you have y-values of (-2,4,-2, 8)

Since it hasn't been stated whether the function is continuous or not, we can just assume the function only has values at those points.

Thus the range is {-2,4,8}

4 0

3 years ago

I NEED HELP PLS THIS IS DUE IN 3 HOURS

Mariulka [41]

Answer:

Part 1) $x^{2} -2x-2=(x-1-\sqrt{3})(x-1+\sqrt{3})$

Part 2) $x^{2} -6x+4=(x-3-\sqrt{5})(x-3+\sqrt{5})$

Step-by-step explanation:

we know that

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

Part 1)

in this problem we have

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

$a=1\\b=-2\\c=-2$

substitute in the formula

$x=\frac{-(-2)(+/-)\sqrt{-2^{2}-4(1)(-2)}} {2(1)}\\\\x=\frac{2(+/-)\sqrt{12}} {2}\\\\x=\frac{2(+/-)2\sqrt{3}} {2}\\\\x_1=\frac{2(+)2\sqrt{3}} {2}=1+\sqrt{3}\\\\x_2=\frac{2(-)2\sqrt{3}} {2}=1-\sqrt{3}$

therefore

$x^{2} -2x-2=(x-(1+\sqrt{3}))(x-(1-\sqrt{3}))$

$x^{2} -2x-2=(x-1-\sqrt{3})(x-1+\sqrt{3})$

Part 2)

in this problem we have

$x^{2} -6x+4=0$

$a=1\\b=-6\\c=4$

substitute in the formula

$x=\frac{-(-6)(+/-)\sqrt{-6^{2}-4(1)(4)}} {2(1)}$

$x=\frac{6(+/-)\sqrt{20}} {2}$

$x=\frac{6(+/-)2\sqrt{5}} {2}$

$x_1=\frac{6(+)2\sqrt{5}}{2}=3+\sqrt{5}$

$x_2=\frac{6(-)2\sqrt{5}}{2}=3-\sqrt{5}$

therefore

$x^{2} -6x+4=(x-(3+\sqrt{5}))(x-(3-\sqrt{5}))$

$x^{2} -6x+4=(x-3-\sqrt{5})(x-3+\sqrt{5})$

5 0

3 years ago

Helpppppp plzzz10points

navik [9.2K]

y=47.38+.617x

130 = 47.38+.617x

subtract 47.38 from each side

82.62=.617x

divide by .617 on each side

133.906 =x

to the nearest minute x=134

Answer Choice C

3 0

4 years ago

Whats The CORRECT answer ?

KiRa [710]

Answer:

(B) 25%

Step-by-step explanation:

40 - 30 = 10

A $10 markdown rate was placed on the trousers.

10/40 = 1/4

That means a 1/4, or 0.25 (25%), markdown rate was placed on the trousers.

Hope it helps (●'◡'●)

6 0

3 years ago