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vlabodo [156]
2 years ago
9

What is the sum of the polynomials? (7x2 - 4x) + (2x - 4x4)

Mathematics
1 answer:
irina1246 [14]2 years ago
4 0

Answer:

d) 9x^3 - 8x^2

Explaination:

7x^3 - 4x^2 + 2x^3 -4x^2

= 9x^3 - 8x^2

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(Q2) Which of the following points lies on the graph of the function y = 4x ?
stepladder [879]

Answer:

C

Step-by-step explanation:

I think I will answer the question the your attachment because it has full information.

The function is: y = 3*2^{x}

a. The function decreases

Wrong, because the base number is 2 and it is greater than 0. The function will go up

b. y=intercept of  (0.2)

Wrong, Let substitute x =2 into the function: y = 3*2^{2} = 12  

c. if x increase by 1, the value of y will double

Because the base number is 2. For example:

  • If x = 2, y = 3*2^{2}  = 12
  • If x =3, y =3*2^{3} =(3*2^{2}*)2  = 24

d. contains the point (2,4)

Wrong, Let substitute x =4 into the function: y = 3*2^{4} = 48

So we choose C

5 0
3 years ago
A function is a relation in which for each element in the domain there is exactly one element of the range
ad-work [718]

Answer:

B

Step-by-step explanation:

BECAUSEB UR DFGHHGDUHGJDHGJV GRJFDHHFJDG GHNHHD

7 0
3 years ago
Given QT = SR, QV = SU, and the diagram, prove that triangles QUT and SVR are congruent. Write a paragraph proof.
QveST [7]

Answer:

Triangles QUT and SVR are congruent because the defining two sides and an included angle of triangles QUT and SVR are equal

Step-by-step explanation:

Here we have QT = SR and

QV = SU

Therefore,

QT = √(UT² + QU²)........(1)

RS = √(VS² + RV²)..........(2)

Since QS = QU + SU = QV + VS ∴ QU = VS

Therefore, since SR = QT and QU = VS, then from (1) and (2), we have UT = RV

Hence since we know all sides of the triangles QUT and SVR are equal and we know that the angle in between two congruent sides of the the triangles QUT and SVR that is the angle in between sides QU and UT for triangle QUT and the angle in between the sides RV and VS in triangle SVR are both equal to 90°, therefore triangles QUT and SVR are congruent.

5 0
3 years ago
The sale price of a scooter s $850. The original price was first discounted by 25% and then discounted an additional 15%. What w
ira [324]

Answer:

$1,190

Step-by-step explanation:

$850(0.25) = 212.50

$850(0.15) = 127.50

$850+212.50= 1,062.50

1,062.50+127.50= 1,190

5 0
3 years ago
What is the surface area?
Blizzard [7]

Answer:

42 square yards

Step-by-step explanation:

T.S.A of cube

= 6l {}^{2}  \\

where l = 7yd

= 6(7) \\  = 42 \: yd {}^{2}

thus, the surface area of cube is 42 square yards

8 0
3 years ago
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