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3 years ago

Need help help me please

Mathematics

2 answers:

Artist 52 [7]3 years ago

6 0

(2x-4)(x+5)
2x^2+10x-4x-20
2x^2+6x-20
which would be answer A for you
hopes that help all you need to do is foil

ankoles [38]3 years ago

5 0

Turns out its A lol my bad i miss calculated

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PLEASE HELP ASAP! I WILL GIVE BRAINLIEST!

olga_2 [115]

In 75 minutes you travelled 30 kilometers, so the rate is 30/75=0.4km/minute

another way is to use the two points to find the slope: m=(30-0)/(75-0)=0.4

6 0

3 years ago

Read 2 more answers

Given the function f\left(x\right)=-3x+6f(x)=−3x+6 with a domain of [-2, 7), identify the range of the function using same notat

Aliun [14]

Answer:

The range of the function is represented by $Ran\{f(x)\} = (-15, 12]$ .

Step-by-step explanation:

Let be $f(x) = -3\cdot x + 6$ , for $x \in [-2,7)$ . As we notice that $f(x)$ is an inyective function, that is, the inexistence of two or more domain element with the same image, with a monotone behavior, we can obtain the bounds of the range of the function by evaluating the expression:

Lower bound ( $x = -2$ )

$f(-2) = -3\cdot (-2)+6$

$f(-2) = 12$

Upper bound ( $x = 7$ )

$f(7) = -3\cdot (7)+6$

$f(7) = -15$

The range of the function is represented by $Ran\{f(x)\} = (-15, 12]$

3 0

3 years ago

Find the equation of the line that passes through the point of intersection of x + 2y = 9 and 4x -2y = -4 and the point of inter

Rudik [331]

Answer:

$y=-6x+10$

Step-by-step explanation:

The point of intersection of

$x+2y=9...eqn1$

and

$4x-2y=-4...eqn2$

is the solution of the two equations.

We add equation (1) and equation(2) to get,

$x+4x+2y-2y=9+-4$

$\Rightarrow 5x=5$

$\Rightarrow x=1$

We put $x=1$ into equation (1) to get,

$1+2y=9$

$\Rightarrow 2y=9-1$

$\Rightarrow 2y=8$

$\Rightarrow y=4$

Therefore the line passes through the point, $(1,4)$ .

The line also passes through the point of intersection of

$3x-4y=14...eqn(3)$

and

$3x+7y=-8...eqn(4)$

We subtract equation (3) from equation (4) to obtain,

$3x-3x+7y--4y=-8-14$

$\Rightarrow 11y=-22$

$\Rightarrow y=-2$

We substitute this value into equation (4) to get,

$3x+7(-2)=-8$

$3x-14=-8$

$3x=-8+14$

$3x=6$

$x=2$

The line also passes through

$(2,-2)$

The slope of the line is

$slope=\frac{4--2}{1-2} =\frac{6}{-1}=-6$

The equation of the line is

$y+2=-6(x-2)$

$y+2=-6x+12$

$y=-6x+10$ is the required equation

4 0

4 years ago

A monument has a base and a statue. The base is a rectangular prism that measures 4 ft by 6ft by 2 ft. The statue is a cube with

valina [46]

So find the volume of the separate shapes. For rectangular prisms (which includes cubes), multiply width by height by length. So multiply 4 by 6 by 2. And for the cube, multiply 2 by 2 by 2. Then, to find the total volume, add the two together.

5 0

4 years ago

2.49 meters to centimeters

ololo11 [35]

That might not be as hard to answer as you just take the . away and then you're left with 249 centimeters :)

8 0

3 years ago