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
Galina-37 [17]
3 years ago
15

If M=5x^2+7x-4 and N=-3x^2-4x+5, then M-N equals

Mathematics
1 answer:
Phantasy [73]3 years ago
4 0

Answer:

8x² + 11x - 9

Step-by-step explanation:

M - N

= 5x² + 7x - 4 - 1(- 3x² - 4x + 5) ← distribute parenthesis by - 1

= 5x² + 7x - 4 + 3x² + 4x - 5 ← collect like terms

= 8x² + 11x - 9

You might be interested in
Please answer ASAP! An explanation is a MUST REQUIREMENT in order to receive points and the Brainliest answer. Thank you.
alexdok [17]
Group and factor/undistribute

(x^2y^3-2y^3)+(-2x^2+4)
(y^3)(x^2-2)+(-2)(x^2-2)
see the (x^2-2) is common term so undistribute
(x^2-2)(y^2-2)

last one
4 0
3 years ago
A triangular bandana has an area of 46 square inches. The height of the triangle is 5 3 4 inches. Enter and solve an equation to
shutvik [7]

Answer: 16 inches

Step-by-step explanation:

The area of a triangle = bh/2

where b = base = unknown

h = height = 5 3/4 inches

Area = 46 inches²

Therefore, 46 = base × 5 3/4 / 2

Cross multiply

46 × 2 = base × 5 3/4

92 = base × 5 3/4

Base = 92 ÷ 5 3/4

Base = 92 ÷ 23/4

Base = 92 × 4/23

Base = 4 × 4

Base = 16 inches

8 0
3 years ago
A spinner used in a board game is divided into 12 equally sized sectors. Seven of these sectors indicate that the player should
forsale [732]

Answer:

9.3 inches

Step-by-step explanation:

The computation of the radius of the spinner be given below:

Let us assume the same be x

So

We know that

Total area of the sector = one-sixth of the total area of the spinner

Given that

45.1 =  1 ÷ 6 × π × r^2

r^2 = 45.1 × 6 ÷ π

r^2 = 86.1

r = 9.279

= 9.3 inches

3 0
3 years ago
Which expressions are equivalent to 7•7•7•7•7•7
Alex

Answer:7^6

Step-by-step explanation:

7 0
3 years ago
Help pls I don't know how to explain it ​
a_sh-v [17]

Answer: C

Step-by-step explanation:

On the left side, there are 2 triangles and 6 2's, so this equals 2x+12.

On the right side, there are 4 triangles and 2 2's, so this equals 4x+4.

Meaning 2x+12=4x+4.

12=2x+4

2x=8.

3 0
2 years ago
Other questions:
  • Help please!!!!]
    11·2 answers
  • What is the area of the figure?<br> HELP FAST?!
    14·1 answer
  • The radius of a sphere decreases at a rate of 6 m/sec. find the rate at which the surface area decreases when the radius is 20 m
    6·1 answer
  • Twenty four is___% of 80
    7·2 answers
  • What is the answer? Please answer correctly
    8·2 answers
  • A cylinder has surface area of 256 π square millimeters and a height of 8 millimeters. The
    15·1 answer
  • -7/9m=11/6 can I get some help??
    12·1 answer
  • One of the tents you look at has a base measuring 3 metres long and 250 centimetres wide.
    12·1 answer
  • Olya would like to find a way to reduce her current debt. The table below shows Olya’s monthly income, expenses and net income.
    11·2 answers
  • Change the followong decimals to percents and order them on the number line from least to gratest useing this numbers 0.02 ' 0.9
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!