(2x+7)(3x-5) What is the answer of this question ?

Help me QUICK, plz! 15 points!

Anna007 [38]

Answer:

t=8

Step-by-step explanation:

Subtract 12t from both sides

(12t-12t) + 16 = (13t-12t) + 24

16 = 1t (or just t) + 24

Then subtract 16 from both sides, and bring "t" over the equals sign making it a negative integer.

-t = 8

t = 8

4 0

4 years ago

Rebecca bought a square table for her kitchen. The area of the table’s surface is 65 ft • 2 What is the approximate length of on

rodikova [14]

Answer:

Step-by-step explanation:

step one:

This problem is on the mensuration of solids,

given that the area is 65ft^2

step two:

we know that the expression for the area of a solid is

areaa= length* length

area= l^2

step three:

substituting the value of the area into the expression we have

65=l^2

we need to square both sides to solve for l we have

√65=l

l= 8.05ft

step four:

From the analysis we found the length of one side to be 8.06ft

6 0

3 years ago

A farmer is constructing a rectangular pen with one additional fence across its width. Find the maximum area that can be enclose

konstantin123 [22]

The maximum area of the pen is the highest area the pen can have

The maximum area is 16200 square yards

Let the dimension be x and y.

So, the perimeter is given as:

$\mathbf{P = 360}$

Because it has one additional fence, the perimeter is calculated as:

$\mathbf{2x + y = 360}$

Make y the subject

$\mathbf{y = 360 - 2x}$

The area is calculated as:

$\mathbf{A = xy}$

Substitute $\mathbf{y = 360 - 2x}$

$\mathbf{A = x(360 -2x)}$

Expand

$\mathbf{A = 360x -2x^2}$

Differentiate

$\mathbf{A' = 360 -4x}$

Set to 0

$\mathbf{360 -4x = 0}$

Rewrite as:

$\mathbf{4x = 360}$

Divide both sides by 4

$\mathbf{x = 90}$

Substitute 90 for x in $\mathbf{A = 360x -2x^2}$

$\mathbf{A = 360 \times 90 - 2 \times 90^2}$

$\mathbf{A = 16200}$

Hence, the maximum area is 16200 square yards

Read more about maximum areas at:

brainly.com/question/11906003

7 0

3 years ago

Native african religions have a god that is....

astraxan [27]

Step-by-step explanation:

Traditional african religions or traditional beliefs and practices of african people are a set of highly diverse belief that includes various ethnic religions. Generally, these traditions are oral rather that scriptural and passed down from one generation to another through folk tales, songs and festivals, include belief in an amount of higher and lower gods, sometimes including a supreme creator or force, belief in spirits, veneration of the dead, use of magic and traditional African medicine. Most religions can be described as animistic with various polytheistic and pantheistic aspects. The role of humanity is generally seen as one of harmonizing nature with the supernatural.

6 0

3 years ago

At the start of the school year, students in Mr. Pi’s class were asked the

kupik [55]

Answer:

No, there is not enough information to determine how many students were absent that particular morning.

Explanation:

The probability of randomly selecting a student who answered the question “yes” is the number of students that responded yes divided by the number of students present. Thus, it was:

21/30 = 7/10

The probability of randomly selecting a student who answered the question “no” is the number of students who answered "no" divided by the number of students present. Thus, it was:

9/30 = 3/10

On one particular morning later in the year, the probability of randomly selecting a student who had answered the question “yes” was 3/4

The equivalent ratios to 3/4 will tell you the possible combinations of students that answered yes and students present on that particular morning.

For instance: 3/4 = 6/8

6/8 would mean that there were 6 students that answered yes and 8 total students on that particular morning.

Since more than half of class was present, the total number of students was greater than 15. Then, you must find a ratio with a denominator greater than 15 (and less than 30).

The other equivalent ratios to 3/4 are: 9/12, 12/16, 15/20, 18/24, 21/28, 24/32, ...

That means that the only possibilities with more than 15 and less than 30 present students are 12/16, 15/20, 18/24, and 21/28.

The total number of absents might have been:

30 - 28 = 2
30 - 24 = 6
30 - 20 = 10
30 - 16 = 14

Since at least one of the students who had answered “yes” was absent and at least one of the students who had answered “no” was absent, all the above possibilities are valid: there is not enough information to determine how many students were absent that particular morning; they could be 2, 6, 10, or 14.

7 0

3 years ago