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
Over [174]
2 years ago
11

Can someone please answer this, ill give you brainliest Would be very appreciated.

Mathematics
1 answer:
Alika [10]2 years ago
5 0

Answer:

see explanation

Step-by-step explanation:

the standard form of a quadratic expression is ax² + bx + c ( a ≠ 0 )

(1)

(2x + 5)(x + 1)

each term in the second factor is multiplied by each term in the first factor, that is

2x(x + 1) + 5(x + 1) ← distribute parenthesis

= 2x² + 2x + 5x + 5 ← collect like terms

= 2x² + 7x + 5 ← in standard form (a = 2, b = 7, c = 5 )

(2)

(x - 2)(x + 2)

= x(x + 2) - 2(x + 2) ← distribute parenthesis

= x² + 2x - 2x - 4 ← collect like terms

= x² - 4 ← in standard form (a = 1, b = 0, c = - 4 )

You might be interested in
You spin a spinner labeled 1-10 evenly. what are the chances you will get an odd number?
mr Goodwill [35]

Answer:

1/2

Step-by-step explanation:

8 0
2 years ago
How many more cents per item is 3 items for $10 than 2 items for $5? Express your answer to the nearest whole number.
fiasKO [112]
10/3: 3.33
5/2:2.50

3.33-2.50=0.83

Answer: 83 cents.

5 0
3 years ago
Which congruence theorems can be used to prove ΔABR ≅ ΔACR? Select three options.
sergejj [24]

Answer:

1. HL

2. SAS

3. SSS

Step-by-step explanation:

Triangles ABR and ACR share side AR (hypotenuse of two right triiangles).

Angles ABR and ACR are right angles.

Sides AB and AC are congruent.

Sides BR and CR are congruent.

1. You can use HL theorem, because two triangles have congruent pair of legs and congruent hypotenuses.

2. You can use SAS theorem, because two triangles have two pairs of congruent legs and a pair of included right angles between these legs.

3. You can use SSS theorem, because two triangles have two pairs of congruent legs and  congruent hypotenuses.

4 0
3 years ago
Read 2 more answers
THE vertices of a triangle are P(-1,3), Q(2,-1), and R(5,3) choose all the congruent sides of the triangle
Ratling [72]

Answer:

PQ and QR are congruent.

Step-by-step explanation:

The length of PQ = sqrt [(2 - -1)^2 + (-1 - 3)^2]

= sqrt 25

= 5 units.

QR = sqrt [(5-2)^2 + (3 - -1)^2) ]

= sqrt 25

= 5 units.

PR =  sqrt [ ( 3-3^2 + (5- -1)^2]

= sqrt 36

= 6 units.

7 0
3 years ago
What is the area of this figure?<br><br> Enter your answer in the box.
earnstyle [38]
To find the area you do base times height. Base is the number across,and height is the number that is up and down.So in this case you will multiply 9 and 5 and 9 and 7 and get 45 and 72.Then you will add 45 and 72 together and get 117. So the area is 117. Answer 117. Hope this helps :D.
5 0
2 years ago
Read 2 more answers
Other questions:
  • If (f + g)(x) = 3x2 + 2x – 1 and g(x) = 2x – 2, what is f(x)
    14·1 answer
  • How much compound interest will $50,000 earn in 10 years at 3.4% APR compounded yearly, providing no deposits or withdrawals are
    12·2 answers
  • The formula for the surface area of a cube is S 5 6x2
    5·1 answer
  • The sum of three consecutive even integers is 222. find the three integers.
    10·1 answer
  • what are the four different ways to solve a quadratic equation? When would you prefer to use each method?
    7·2 answers
  • Plz help, I promise I will give brainliest
    14·2 answers
  • What is the surface area of the triangular prism? A triangular prism. The rectangular sides are 20 feet by 3 feet, 20 feet by 4
    8·1 answer
  • Mr. Leonard is renting a car for one day. The table below shows the total amount he will be charged for the car based on the num
    12·1 answer
  • Now answer the question:
    6·1 answer
  • The library has 28 science fiction books. Each shelf holds 5 books,
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!