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3 years ago

Which of the following is not an equivalent expression to -12 - 7x?

Mathematics

2 answers:

Georgia [21]3 years ago

8 0

-7x + 12 is not an equiv. expression because one of the - signs in the original expression has been changed to +.

Anna35 [415]3 years ago

7 0

Answer:

A. -7x+12

Step-by-step explanation:

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sineoko [7]

<h2>As a decimal: 20.56667</h2><h2>As fractions: $\frac{617}{30}$ OR $20\frac{17}{30}$ </h2>

3 0

2 years ago

Y=x2<br> x=-3 -2 -1 0 1 2 3<br> y=

brilliants [131]

Answer:

see below

Step-by-step explanation:

Y=x^2

x=-3 -2 -1 0 1 2 3

y=(-3)^2 (-2)^2 (-1)^2 0^2 1^2 2^2 3^2

9 4 1 0 1 4 9

7 0

2 years ago

Solve x2 - 8x - 9 = 0. Rewrite the equation so that it is of the form x2 + bx = c.

barxatty [35]

Answer:

x=9,-1 and $x^2+(-8)x=9$

Explanation:

we have been given with the quadratic equation $x^2-8x-9$

we compare the given quadratic equation with general quadratic equation

general quadratic is $ax^2+bx+c=0$

from given quadratic equation a=1,b= -8,c= -9

substituting these values in the formula for discriminant $D=b^{2}-4ac$

$D=(-8)^2-4(1)(-9)=100$

Now, to find the value of x

Formula is $x=\frac{-b\pm\sqrt{D}}{2a}$

Now, substituting the values we will get

$x=\frac{-(-8)\pm\sqrt{100}} {2}= \frac{8\pm10}{2}=9,-1$

And rewritting the given equation by shifting 9 to right hand side of the given equation and taking minus inside the bracket so as to convert it in the form of

$x^2+bx=c$

4 0

2 years ago

Read 2 more answers

Which statement BEST describes why the exponential function exceeds the linear function?

Mkey [24]

Answer:

Step-by-step explanation:

A is correct. The graph of the basic exponential function neither touches nor crosses the x-axis, whereas a linear function does cross over and can be negative for some inputs.

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2 years ago

What is

olganol [36]

Answer:

What is

+2?

Alco

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2 years ago