All categories

3 years ago

(4y − 3)(2y2 + 3y − 5)

Mathematics

1 answer:

VladimirAG [237]3 years ago

4 0

Answer:

8y^3+6y^2-29y+15

Step-by-step explanation:

the correct expression is

(4y − 3)(2y^2 + 3y − 5)

Given data

We have the expression

(4y − 3)(2y^2 + 3y − 5)

let us open bracket

8y^3+12y^2-20y-6y^2-9y+15

Collect like terms

8y^3+12y^2-6y^2-20y-9y+15

8y^3+6y^2-29y+15

You might be interested in

What are the solutions to the equation √x2+2x-10=√x+20

Marianna [84]

√x^2+2x-10=√x+20
raising both members to the square
 x^2+2x-10=x+20
rewriting
x^2+x-30=0
factoring
(x+6)(x-5)=0
therefore the solutions are
 x = –6, x = 5
the answer is
B. x = –6, x = 5

5 0

4 years ago

Solve the following system of equations using the elimination method. 5x – 5y = 10 6x – 4y = 4

tresset_1 [31]

Answer:

x=-2,y=-4

Step-by-step explanation:

By dividing to lowest terms

5x – 5y = 10= x-y=2.......(1)

6x – 4y = 4=3x-2y=2........(2)

By elimination method

Multiply equation (1) by 3 so as to correspond with equation (2)

3(x-y)=3(2)

3x-3y=6..........(3)

Multiply equation (2) by 1 so as to correspond with equation (1)

1(3x-2y)=1(2)

3x-2y=2..........(4)

Then equation (3)-equation (4)

(3x-3y=6)

(3x-2y=2)

__________

-y=4

y=-4

Substitute y=-4 into equation(1)

x-(-4)=2

x+4=2

x=-2

Therefore x=-2,y=-4

8 0

3 years ago

Order these numbers from least to greatest , 8.102 , 8.1212 , 8.12 , 8.2

-BARSIC- [3]

8.102, 8.12, 8.1212, 8.2
Hope this helps!

8 0

4 years ago

Read 2 more answers

A ball is launched into the sky at 19.6 feet per second from a 58.8 meter tall building. The equation for the ball’s height, h,

zhenek [66]

Answer:

Therefore,

The ball strike the ground at time , t = 6 s

Step-by-step explanation:

Given:

The equation for the ball’s height, h, at time t seconds is

$h=-4.9t^{2}+19.6t+58.8$

To Find:

time, t = ? (When the ball strike the ground)

Solution:

When the ball strike the ground height, h will be ZERO,

So put h = 0 in above given equation for time,

$0=-4.9t^{2}+19.6t+58.8$

Which is a Quadratic Equation

Dividing throughout by - 4.9 we get

$0=t^{2}-4t-12$

On Factorizing, splitting the middle term we get

$t^{2}-6t+4t-12=0$

$t(t-6)+2(t-6)=0\\\\(t+2)(t-6)=0\\\\t=-2\ or\ t=6$

As time cannot be negative,

t = 6 s

Therefore,

The ball strike the ground at time , t = 6 s

7 0

3 years ago

A Baker buys 25 lbs of flour for $74.75 What is the rate or unit price per pound of flour?

Rina8888 [55]

Answer:

Step-by-step explanation:

74.75 divided by 25

3 0

4 years ago

Read 2 more answers