All categories

2 years ago

(3y + 2)(7y) y= 1 How do I evaluate that. Please show work

Mathematics

2 answers:

STALIN [3.7K]2 years ago

6 0

Answer:

1. y = 1/7 = 0.143

2. y = 2/3 = 0.667

Step-by-step explanation:

STEP 1 :

Equation at the end of step 1

(3y - 2) • (7y - 1) = 0

STEP 2 :

Theory - Roots of a product

2.1 A product of several terms equals zero.

When a product of two or more terms equals zero, then at least one of the terms must be zero.

We shall now solve each term = 0 separately

In other words, we are going to solve as many equations as there are terms in the product

Any solution of term = 0 solves product = 0 as well.

Solving a Single Variable Equation:

2.2 Solve : 3y-2 = 0

Add 2 to both sides of the equation :

3y = 2

Divide both sides of the equation by 3:

y = 2/3 = 0.667

Solving a Single Variable Equation:

2.3 Solve : 7y-1 = 0

Add 1 to both sides of the equation :

7y = 1

Divide both sides of the equation by 7:

y = 1/7 = 0.143

LUCKY_DIMON [66]2 years ago

4 0

Answer: 17

Step-by-step explanation:

y= 1

(3y + 2)(7y)

(3(1) + 2(7(1)) Replace y with given number

(3 + 2(7)) Multiply 1 to 3 and 7

(3 + 14) Multiply 2 and 7

(17) Add 3 and 14

You might be interested in

At the yearly fund raising drive, the nonprofit company 's goal was to raise $55,500 each day. After three days it had raised $5

maxonik [38]

This is honestly simple but we all need help! The answer is 55,053. Hope this helps! =3

5 0

2 years ago

What is the answer to a/9 =−4

frez [133]

Multiply all the terms by the same value to eliminate fraction denominators
a/9=-4
9 . a/9=9(-4)
The dot means multiplication
Then simplify to simplify cancel the multiplied terms that are in the denominator
a=9 . -4
Multiply the number
9 . -4 =36
And don’t forget to add the negative sign so the answer is
a= -36

6 0

2 years ago

Seventy-eight is 26% of what number?

tensa zangetsu [6.8K]

78 / 0.26 = 300 so the answer is 300

8 0

2 years ago

Find a formula for the described function. A rectangle has perimeter 16 m. Express the area A of the rectangle as a function of

Alex17521 [72]

Part A:

Let the length of one of the sides of the rectangle be L, then the length of the other side is obtained as follow.

Let the length of the other side be x, then

$2(L+x)=16 \\ \\ \Rightarrow L+x=8 \\ \\ \Rightarrow x=8-L$

Thus, if the length of one of the side is x, the length of the other side is 8 - L.

Hence, the area of the rectangle in terms of L is given by

$L(8 - L) = 8L-L^2$

Part B:

To find the domain of A

Recall that the domain of a function is the set of values which can be assumed by the independent variable. In this case, the domain is the set of values that L can take.

Notice that the length of a side of a rectangle cannot be negative or 0, thus L cannot be 8 as 8 - 8 = 0 or any number greater than 8.

Hence the domain of the area are the set of values between 0 and 8 not inclusive.

Therefore,

$dom(Area)=0\ \textless \ L\ \textless \ 8 \ or \ (0, 8)$

3 0

2 years ago

4 (-3x - 1) = 13x + 6

GarryVolchara [31]

Answer:

x=-2/5

Step-by-step explanation:

4(-3x-1)=13x+6 ~ Distribute the 4 into the parenthesis

-12x-4 = 13x+6 ~ add 12x to both sides

-4= 25x + 6 ~ subtract 6 from both sides

-10 =25x ~ divide by 25

-10/25 = x ~ simplify the fraction by dividing the num. and den by 5

-2/5 =x

4 0

2 years ago

Read 2 more answers