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3 years ago

HW HELP ASAP PLZZZZZ

Mathematics

1 answer:

Natali5045456 [20]3 years ago

7 0

Answer:

ur ans is here...

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3x^3-2x^2-147x+98=(ax-c)(bx+d)(bx-d) where a,b,c and d positive integers. Work out the value of a,b,c and d

Alexxx [7]

Expand the right side:

$(ax-c)(bx+d)(bx-d)=(ax-c)(b^2x^2-d^2)$

$=ab^2x^3-b^2cx^2-ad^2x+cd^2$

Notice that 98 = 2 * 7 * 7, so we have $c=2$ and $d=7$ .

Then

$-ad^2=-147\implies a=\dfrac{147}{49}=3$

and

$ab^2=3\implies b^2=1\implies b=1$

6 0

3 years ago

How to find the area of composite polygon that have a base of 16 meters height of 18 meters and a height of 11 meters.

LenaWriter [7]

The area of the composite polygon is:

$\boxed{A_{T}=376 \ m^2}$

<h2>Explanation:</h2><h2 />

Hello! remember you have to write complete questions in order to get good and exact answers. Here you haven't provided any figure, so I'll choose the figure below in order to illustrate this problem. A composite polygon is a polygon that can be divided into two or more basic shapes. So here we have a composite polygon formed by a triangle and a rectangle. So:

$A_{total}=A_{T} \\ \\ A_{triangle}=A_{tr} \\ \\ A_{rectangulo}=A_{r} \\ \\ \\ A_{tr}=\frac{b\times h}{2} \\ \\ b:Base \ of \ the \ triangle \\ \\ h:height \ of \ the \ triangle \\ \\ \\ A_{r}=B\times H \\ \\ B:base \ of \ the \ rectangle \\ \\ H:height \ of \ the \ rectangle$

So the area of the composite figure is:

$A_{T}=\frac{16\times 11}{2} + 16\times 18 \\ \\ A_{T}=88+288 \\ \\ \boxed{A_{T}=376 \ m^2}$

<h2>Learn more:</h2>

Dilation: brainly.com/question/10946046

#LearnWithBrainly

8 0

3 years ago

Write the cross products for the proportion s/t= u/v

Brrunno [24]

Hello from MrBillDoesMath!

Answer:

sv = tu

Discussion:

For the case of a proportion the "cross product" refers to the products of the "extremes" equaling the products of the "means". As (s,v) are the extremes and (u.t) the means, this gives sv = tu

Thank you,

MrB

8 0

3 years ago

(Scientific Notation LC)

trapecia [35]

0.00067

You always want the period to the right of the first number meaning you’ll start from there counting backwards because it is negative.

8 0

1 year ago

Question 4, plz help ( radius is 6.8)

Kisachek [45]

Answer:

A) 145.3 cm^2

Step-by-step explanation:

The formula for the area of a circle is A = π r^2

So to find the area we would plug the radius of 6.8 into the formula

Area = π (6.8)^2

Area = (3.14) (6.8)^2

Area = 145.27

Area = 145.3

4 0

2 years ago