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3 years ago

What is the function value of f(x)=-2x^2-4x-7

Mathematics

1 answer:

kondaur [170]3 years ago

7 0

You can go onto a website link https://www.freemathhelp.com/factoring-calculator.php :)

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The equation cos super negative 1 (StartFraction 3.4 Over 10 EndFraction)equals x can be used to determine the measure of angle

Dmitriy789 [7]

Answer:

70 degrees

Step-by-step explanation:

$cos^{-1} \frac{3.4}{10}=x$

This implies that: $cos x= \frac{3.4}{10}$ Recall: $cos x=\frac{adjacent}{hypotenuse}$

From the diagram

Angle CAB, $x=cos^{-1} \frac{3.4}{10}=70.1 degrees$ =70 (to the nearest degree)

6 0

4 years ago

Read 2 more answers

What is the equation for the line of symmetry in this figure?

givi [52]

Answer:

Step-by-step explanation:

The axis of symmetry for the figure is the y- axis

The y- axis has equation x = 0

6 0

3 years ago

4x + 5y = 10

Vika [28.1K]

Answer:

For A = 32/5 and B = 8 the system of equations will have infinitely many solutions.

Step-by-step explanation:

Given equations are:

4x + 5y = 10

Ax + By = 16

The general form of linear equation in two variables is given by:

$ax+by = c$

Here a, b and c are constants and x,y are variables.

In the given equations, after comparing with the general form

$a_1 = 4\\b_1 = 5 \\c_1 = 10\\a_2 = A\\b_2 =B\\c_2 = 16$

"In order for a system of equations to have infinity many solutions,

$\frac{a_1}{a_2} = \frac{b_1}{b_2} = \frac{c_1}{c_2}$ "

Putting the values we get

$\frac{4}{A} = \frac{5}{B} = \frac{10}{16}\\\frac{4}{A} = \frac{5}{B} = \frac{5}{8}\\Now\\\frac{4}{A} = \frac{5}{8}\\\frac{A}{4} = \frac{8}{5}\\A = \frac{8}{5} * 4\\A = \frac{32}{5}\\And\\\frac{5}{B} = \frac{5}{8}\\\frac{B}{5} = \frac{8}{5}\\B = 8$

Hence,

For A = 32/5 and B = 8 the system of equations will have infinitely many solutions.

5 0

3 years ago

1.8-3.7x=-4.2x+0.3<br> into simplest form

Natali5045456 [20]

The answer is x=-3.....

3 0

3 years ago

What's the next ones?

hammer [34]

3.) 2 × 0.5 = 1 4.) -2 × -0.5 = 1

4 0

3 years ago