1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
IRISSAK [1]
3 years ago
14

Plz answer the following No scams,links or random amswers or ill report​

Mathematics
1 answer:
zvonat [6]3 years ago
3 0

Answer:

f(2) = 12

f(x) = 7, x = -3, 1

Step-by-step explanation:

<u>a)</u>

plug in x as 2

f(x) = 2^2 + 2(2) + 4

f(x) = 4 + 4 + 4

f(x) = 12

<u>b)</u>

replace f(x) with 7

7 = x^2 + 2x + 4

x^2 + 2x - 3 (move 7 to other side)

Factor

ac: -3x^2

b: 2x

split b into 3x, -x

(x^2 -x) + (3x - 3)

    ↓             ↓

  x(x-1)  +  3(x-1)

Factor: (x-1)(x+3) = 0

Solve using Zero Product Property:

x - 1 = 0, x + 3 = 0

x = 1, x = -3

You might be interested in
How to do this step by step
Marina CMI [18]

1. 36 = 6·6 and 42 = 6·7 have a common factor of 6.

... x⁴ and x² have a common factor of x²

The GCF is 6x².

The factorization is 36x⁴ -42x² = 6x²(6x² -7)

2. All coefficients are multiples of 4. All variable factors are multiples of x³.

The GCF is 4x³.

The factorization is 4x⁵ -8x⁴ -4x³ = 4x³(x² -2x -1)

3. The GCF of coefficients 6 and 15 is (15 mod 6) = 3, which is also a factor of the other coefficients. The lowest power of m, which is m² is also a factor of the other terms.

The GCF is 3m².

The factorization is 6m⁵ -15m⁴ -21m³ +27m² = 3m²(2m³ -5m² -7m +9)

5 0
3 years ago
What is the answer for X and Y<br> (Geometry)
Natasha2012 [34]

Answer: y =21; x = 7√3

have: cos 60° = x/(14√3) = 1/2 => x = 1/2. (14√3) = 7√3

sin 60° = y/(14√3) = (√3)/2 => y = (√3)/2 . 14√3 = 21

Step-by-step explanation:

4 0
3 years ago
there are 750 students in a school. If the number of girls is 120 more than the boys how many boys are there in the school?
Paladinen [302]

You would subtract 120 from 750 to get your answer.

750 - 120 = 630.

4 0
3 years ago
Read 2 more answers
A metallic cube with side 15 cm is to be melted. Its reformed volume will be equal to its current volume. Find
AlekseyPX
V of cube = a cubed
15 to the third power would give u a volume of 3,375cm cubed
4 0
2 years ago
PLEASE ANSWER: Write the equation of the line that passes through the point (-3,-5) and is perpendicular to y=-3x+5
oksian1 [2.3K]
We are starting with y = 3x -5 which is the slope intercept form (y = mx +b) of a linear equation where the slope is m and the y intercept is b.  In this equation the slope m = 3 A perpendicular line would have a slope that is the negative reciprocal so the slope of the perpendicular line would be m = -1/3 So we have a slope m = -1/3   and a point (3,2)  so use the point slope formula (Y-Y1) = m(X-X1)In this case (X1,Y1) = (3,2) (Y - 2) = (-1/3)(X-3) Y-2 = (-1/3)X + 1 Y = (-1/3)X + 3 would be the equation of the perpendicular line through (3,2)
8 0
3 years ago
Read 2 more answers
Other questions:
  • Help please!! Simplify the following expression
    5·1 answer
  • Partial quotients of 3 divided by 225
    12·1 answer
  • Plz help100 points. also, plz be the correct answer​
    7·2 answers
  • What are the angles of a triangle
    12·2 answers
  • A circle with radius of 9 cm sits inside a circle with radius of 11
    9·1 answer
  • Evaluate: .25 (1.2 x 3 - 1.25) + 3.45
    5·2 answers
  • Pls answer question :)
    14·2 answers
  • Evaluate 4a3 + 5b4 when a=2 and b=5​
    11·1 answer
  • On Monday, Duncan’s skateboard shop received its first shipment of skateboards. Duncan sold 12 skateboards that day. On Thursday
    6·1 answer
  • Ss below. <br> help would be appreciated.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!