MATHEMATICS HIGH SCHOOL

Factorise (x²+3x)²-3(x²+3x-4​

Answers

Answer 1
Answer:

Answer:x^4+6x^3+6x^2-9x+12

Step-by-step explanation:

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The sum of triple a number and 6 is 9

Answers

3x+6=9
Triple a number (3x) + 6
subtract 6 from both sides
3x=3
Divide by 3 on both sides
X=1
We have an equation: 3*?+ 6= 9
⇒ 3*?= 9-6
⇒ 3*?= 3
⇒ ?= 3/3
⇒ ?= 1

The number is 1~

A culture started with 2000 bacteria. After 2 hours it few to 2200 bacteria. Predict how many bacteria will be present after 19 hours.

Answers

Answer:

3900 bacteria will be present

Step-by-step explanation:

A culture started with 2000 bacteria and after 2 hours it grew to 2200 bacteria, determining the rate, we can assume that for every hour, 100 bacteria adds onto the culture. Therefore:

If 19 hours have passed, multiply 100 by 19 to insinuate the every hour per 100 bacteria.  

19 * 100

1900

Now you can add this to the original starting bacteria:

2000 + 1900

3900 bacteria

Ella and Kate played basketball last year. Ella scored 16 points per game. Kate's total points for the season were 22 less than Ella's. The following expression shows Kate's total points: 16z-22 In the expression what does the variable z represent?

Answers

The total number of games!
In the given, it is stated that Ella scored 16 points per game and that the total points of Kate were 22 less than Ella's.

If we wish to get Kate's total points and letting x as the total number of games and y as the total points, then
y = 16x - 22

Therefore, z = x, and z is the total number of games.

Peyton has a goal to walk 10,000 steps each day. On Tuesday afternoon,Peyton walked 7,338 steps. She averages 2.5 feet per step

Answers

Please consider the complete question.

Peyton has a goal to walk 10,000 steps each day. On Tuesday afternoon, Peyton walked  7,338 steps. She averages 2.5 feet per step.

How many more feet does Peyton need to walk to reach her goal of 10,000 steps?

First of all we will find the steps Peyton needs to walk to reach her goal.

\text{Steps Peyton needs to walk}=10000-7338

\text{Steps Peyton needs to walk}=2662

Since Peyton averages 2.5 feet per step, so to find number of feet in 2662 steps, we will multiply 2662 by 2.5 as:

\text{Distance that Peyton needs to walk to reach her goal}=2662* 2.5\text{ ft}

\text{Distance that Peyton needs to walk to reach her goal}=6655\text{ ft}

Therefore, Peyton needs to walk 6655 feet to reach her goal.

Negative 4 plus 8 equals

Answers

Answer:

4

Step-by-step explanation:

You add -4 with 8 so you have -4 + 8 = 4
The answer to that would be 4.

Calculate 5!.A.
5

B.
120

C.
51

D.
60

Answers

5x4x3x2x1 = 20 x 3 60x2 120x1 = 120 Answer is B 120
The answer is:
B. 120
5! Means 5 factorials >> 5 x 4 x 3 x 2 x 1 It's simply just the product of a series of descending natural numbers (no negative numbers or fractions) which are indicated by an exclamation point.
The answer is B. because 5x4= 20, 20x3 (next number to multiply in the series) =60, 60x2= 120, 120x1= 120. 
I hope that helped (:
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