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Vilka [71]
3 years ago
7

How could I factor these

Mathematics
1 answer:
allochka39001 [22]3 years ago
5 0
Ax^2 + bx + c

multiply the "a" and "c" coefficient
= ac

factor "ac" into a pair of numbers that adds to equal "b"
replace "bx" in the expression with factor pair

group terms and factor

* example problem:
2x^2 + 13x + 6

ac
2*6=12

factor pairs of 12
1*12 = 12
3*4=12
6*2=12

** The factor pair 1 and 12 add to make 13

replace 13x with (x+12x)

2x^2 + x + 12x + 6

group similar terms
(2x^2 + 12x) + (x + 6)

factor
2x(x + 6) + (x + 6)

The same parenthesis (x + 6) can be factored further by combining the outside multipliers 2x and 1

= (2x + 1)(x + 6)
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Sandy thinks she her total will be $52.77 for 52 songs. Is this the correct
Vera_Pavlovna [14]

Answer:it is going to be $52.77

Step-by-step explanation:

6 0
3 years ago
A valve in a full 6000 gallon water tank is slowly opening. Water flows out of the tank through the valve. The flow rate in gall
Wittaler [7]
The volume of the gallon is 6000 gallon
the rate of water flow per min is f(t)=300t^2
a] amount of water that flowed in the first 7 minutes=7/60 hours will be:
f(7)=300(7/60)^2
solving the above we get
f(7)=7/12 gallons

b] The time taken for the tank to be empty will be as follows:
amount of water that will flow out for the tank to be empty will be 6000 gallons
thus,
6000=300t^2
this can be simplified to
20=t^2
t^2-20=0
solving this we get:
t=-2√5 or 2√5
the time taken for the tank to be empty will be t=2√5 hours=5.4721 hours



8 0
3 years ago
Read 2 more answers
Area as a sum:<br> Area as a Product:<br><br><br> I need the are as a sum Nd a product
PSYCHO15rus [73]

Given:

The area model.

To find:

The area as a sum and area as a product.

Solution:

The four terms of the area model are 2x^2,10x, 3x, 15.

The area as a sum is the sum of all the terms of given area model.

Area as a sum = 2x^2+10x+3x+15

                        = 2x^2+13x+15

The area as a product is the factor form of sum of all the terms of given area model.

Area as a product = 2x^2+10x+3x+15

                        = 2x(x+5)+3(x+5)

                        = (x+5)(2x+3)

Therefore, the area as a sum is 2x^2+13x+15 and the area as a product is (x+5)(2x+3).

8 0
3 years ago
Given the set of runs scored in 13 baseball games: 2 8 2 1 0 0 3 5 1 8 6 5 5 A. What is the median number. B. After recording th
dangina [55]

Answer:

Step-by-step explanation:

Given:

Games:

0

0

1

1

2

2

3

5

5

5

6

8

8

A.

Median is the middle value after the ste of values are arranged in ascending order, M which is the 7th value = 3

B.

Median increased by 2, M + 2

Therefore, new Median = 5

This means that the 2 runs are less than the previous median, 3 or greater than the new median, 5.

Possible pairs:

1, 2 or 6, 8

C.

Median can be 2.5 when the total number of runs scored are even numbers, therefore if the middle numbers are 2 and 3. In this case a number greater than or equal to 2;

The median = (2 + 3)/2

= 2.5

D.

Range is the difference between the highest value of runs scored to the lowest value of runs. In the data given above, range = 8 - 0

= 8.

It is possible to play 2 more games and no change in the range, 8 if the value of the 2 games (or 1 game) is/are greater than 0, the lowest value of runs scored and/or less than 8, which is the greatest value of runs scored.

4 0
3 years ago
If y =32 when x =8 find y when x =30
irina1246 [14]

Answer:

y = 120

Step-by-step explanation:

If y = 32 when x = 8, then <em>y</em> is 4 times the number of <em>x</em>. If x = 30, then (4)30 = 120.

8 0
4 years ago
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