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3 years ago

Plz help like i need it-

Mathematics

2 answers:

aleksley [76]3 years ago

8 0

Answer:

Step-by-step explanation:

madam [21]3 years ago

3 0

Answer:

dont know if its a good answer but

Step-by-step explanation:

The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.

Interval Notation:

(

−

∞

)

Set-Builder Notation:

{

∈

}

The range is the set of all valid

values. Use the graph to find the range.

Interval Notation:

(

−

∞

)

Set-Builder Notation:

{

∈

}

Determine the domain and range.

Domain:

(

−

∞

)

{

∈

}

Range:

(

−

∞

)

{

∈

}

sorry if put wrongly

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The value of H is half the value of G ( G = 2/3 )

denpristay [2]

Answer:

The value of H is (1/3)

Step-by-step explanation:

i found it by dividing the value of G on 2

5 0

3 years ago

A bridge in the shape of an arch connects two cities separated by a river. The two ends of the bridge are located at (–7, –13) a

sdas [7]

Answer:

$y=-\dfrac{13}{49}x^2$

Step-by-step explanation:

The shape of an arch corresponds to a parabola.

the general equation for a parabola is:

$y=ax^2+bx+c$

we're given three coordinates: (-7,-13),(7,-13) and (0,0)

so we can plug these values in the general equation to make 3 separate equations:

(x,y) = (-7,-13)

$-13=a(-7)^2+b(-7)+c$

$49a-7b+c=-13$

(x,y) = (7,-13)

$-13=a(7)^2+b(7)+c$

$49a+7b+c=-13$

(x,y) = (0,0)

$0=a(0)^2+b(7)+c$

$c=0$

so we have three equations. and we can solve them simultaneously to find the values of a,b, and c.

we've already found c = 0, let's use substitute it to other equations.

$49a-7b+c=-13\quad\Rightarrow\quad49a-7b=-13$

$49a+7b+c=-13\quad\Rightarrow\quad49a+7b=-13$

we can solve these two equation using the elimination method, by simply adding the two equations

$\quad\quad49a-7b=-13\\+\quad49a+7b=-13$

------------------------------

$\quad\quad 98a=-26$

$\quad\quad a=-\dfrac{13}{49}$

Now we can plug this value of a in any of the two equations.

$49a-7b=-13$

$49\left(-\dfrac{13}{49}\right)-7b=-13$

$-13-7b=-13$

$-7b=0$

$b=0$

We have the values of a,b, and c. We can plug them in the general equation to find the equation of the arch.

$y=\left(-\dfrac{13}{49}\right)x^2+0x+0$

$y=-\dfrac{13}{49}x^2$

$49y=-13x^2$

This our equation of the arch!

5 0

3 years ago

Graph the function and find the range

kramer

The answer for the graph would be C. While x is less than or equal to 0, there is the graph of -4x. While x is greater than x, there is the graph of -5 (horizontal line). Furthermore, the closed dot at the end of the -4x represents the less than or EQUAL TO. The dot at the end of the -5 is open because it is only true when x > 0.

The range (y-values where the graph exists) is [-5]∪[0, infinity)

6 0

3 years ago

You want to order some T-shirts that cost $14 each. Shipping is $7 per order. If you buy 11 T-shirts, what will the order cost?

poizon [28]

14 x 11 = 154
7 x 11 = 77
154 + 77 = 231

8 0

3 years ago

Read 2 more answers

I need helpppp plssss anyone I’m not the best at math :/

Ulleksa [173]

Answer:

Step-by-step explanation:

7 0

3 years ago

Plz help like i need it-​

Plz help like i need it-