MATHEMATICS HIGH SCHOOL

Plz hurry!!! i need help and I dont understand

Answers

Answer 1

Answer:

Answer:

it wants you to find the slop by using the Y=mx+b

Step-by-step explanation:

this is how you solve.

Answer 2

Answer:

Answer:

The slope is m = 7/3

The y-intercept is b = -5

Step-by-step explanation:

hope that helps!!!

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Anybody can help on anyone of these please quick !!!

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19) B
20) D
21) A
22) B
23) C
24) C

Expand (3x-4y)^3 please answer thank you

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27x^3-108x^2y+144xy^2-64y^3

Answer:

Step-by-step explanation:

What is the vertex of f(x)=5x^2+20x-16

Answers

Answer:

Vertex of given quadratic function $f(x)=5x^2+20x-16$ is (-2,-36)

Step-by-step explanation:

Given function $f(x)=5x^2+20x-16$

We have to find the vertex of the given function $f(x)=5x^2+20x-16$ .

The standard quadratic function is represented by $f(x)=a(x-h)^2+k$ ,

Where (h,k) represents the vertex and a ≠ 0.

If a is positive, the graph opens upward, and if a is negative, then it opens downward.

We first write the given equation in standard form ,by using completing square,

We know $(a-b)^2=a^2-2ab+b^2$

First taking 5 common from function, we have,

$f(x)=5(x^2+4x-(16)/(5))$

Comparing we have, a = x and

-2ab= +4x ⇒ -2b = 4 ⇒ b = -2

Add and subtract b $b^2=4$ , we get,

$f(x)=5(x^2+4x+4-4-(16)/(5))$

On simplifying, we have,

$f(x)=5((x+2)^2+(-20-16)/(5))$

$f(x)=5((x+2)^2+(-36)/(5))$

We get, $f(x)=5((x+2)^2)-36$

On comapring with standard equtaion , we have h = -2 and k = -36

Thus, vertex of given quadratic function $f(x)=5x^2+20x-16$ is (-2 ,-36)

the vertex is (-2,-36)

Marcia drew a plan for a rectangular piece of material that she will use for a blanket. Three of the vertices are (-2.6, -1.5), ( -2.6,3.3), and (2.7, 3.3). What are the coordinates of the fourth vertex?

Answers

Answer:

$(2.7,-1.5)$

Step-by-step explanation:

The points are $A(-2.6,1.5), B(-2.6,3.3), C(2.7,3.3)$

The fourth vertex will can be found by the points $A$ and $C$ .

The angles between the sides of a rectangle are $90^(\circ)$ .

The $x$ coordinate will be the same as $C$ and the $y$ coordinate will be the same as $A$ . The fourth verex is $D$ .

So, the fourth vertex of the rectangular piece will be $(2.7,-1.5)$ .

Select the term for what a manufacture spends for goods and services A. cost B. price C. markup

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cost is what manufactures spend for goods and services

Select the term for what a manufacture spends for goods and services Answer A. cost

Does anybody know anything about simplifying rational expressions? 4x/11x

Answers

all you have to do is cancel the x 4/11

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