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
Maru [420]
3 years ago
11

Question 1 (1 point)

Mathematics
1 answer:
olga55 [171]3 years ago
6 0

Answer:

1) 2y^{2}+4y-9

2) 18x^{5}y^{4}z

3) 6x^{5}-12x^{4}+9x^{3}

4) 40

5) x^{3}-7x^{2}+3x+36


Step-by-step explanation:

1) Distribute the negative sign that is outside the parentheses and then you must add like terms, as following:

(y^{2}-3y-5)-(-y^{2}-7y+4)=y^{2}-3y-5+y^{2}+7y-4=2y^{2}+4y-9

2) According to the Product property of exponents, when you multiply powers with the same base, you must add the exponents. Then:

(6xy^{3}z)(3x^{2}yx^{2})=18x^{5}y^{4}z

3) Apply the Distributive property and the Product property of exponents. Then, you obtain:

-3x^{3}(-2x^{2}+4x-3)=6x^{5}-12x^{4}+9x^{3}

4) (4a+5)^{2} is a square of a sum, then, by definition you have:

(a+b)^{2}=a^{2}+2ab+b^{2}

Then:

(4a+5)^{2}=(4a)^{2}+2(4a)(5)+5^{2}=16a^{2}+40a+25

The coefficient of the second term is the number in front of the variable <em>a.</em> Then, the answer is: 40

5)  Apply the Distributive property and the Product property of exponents, then, oyou must add the like terms:

(x-4)(x^{2}-3x-9)=x^{3}-3x^{2}-9x-4x^{2}+12x+36=x^{3}-7x^{2}+3x+36

You might be interested in
JOE BROUGHT AN APPLE HOW MANY APPLES HE HAVE???????????????????????
USPshnik [31]

Answer:

uh

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
True or False
horrorfan [7]

For example, a classroom of 30 students with 15 males and 15 females could generate a representative sample that might include six students: three males and three females

so true i think

5 0
2 years ago
38.07 is 9% of what number?
Nataliya [291]

38.07 =  \frac{9}{100} x

38.07  \times  \frac{100}{9}  = x

\frac{3807}{9}  = x

423 = x

6 0
2 years ago
Read 2 more answers
In your own words, explain what it means to dilate a triangle.
mrs_skeptik [129]

Answer:

It means that you take a triangle and make another one but this time it is not the same size of the first one but the same shape. In other words make it bigger or smaller than the first one.

7 0
3 years ago
1/3 21 - 1/2 12 can somebody please help me!
Alexxandr [17]

Answer:

1

Step-by-step explanation:

Simplify the following:

7 - 1/2×12

(-1)/2×12 = (-12)/2:

7 + (-12)/2

12/2 = (2×6)/2 = 6:

7 - 6

21/3 = (3×7)/3 = 7:

7 - 6

7 - 6 = 1:

Answer:  1

7 0
3 years ago
Read 2 more answers
Other questions:
  • How many times doez 100,000,000 go into 1,000,000,000​
    11·2 answers
  • A company policy requires that, for every 40 employees, there must be 3 supervisors. If the are 285 supervisors at the company h
    11·1 answer
  • PLEAS HLP me DUMB BCUASE IM A BLOND
    12·2 answers
  • If G = {(-1, 7),(-8, 2),(0, 0),(6, 6)), then the range of G is
    9·1 answer
  • A bicycle tire is 28 inches in diameter. Approximately how far does the bicycle move forward each time the wheel goes around? (u
    8·1 answer
  • Use your calculator to evaluate the trigonometric expression to the nearest hundredth.
    7·1 answer
  • Daniela recorded low temperatures during the school day last week and this week her results are shown in the table below.
    6·1 answer
  • Help me please !
    8·1 answer
  • a garden box has a perimeter of 27 1/2 feet if the length is 9 feet what is the area of the garden box answer correct and i will
    6·1 answer
  • Juna travels 15 mph for 10 hours find the distance piles per hour
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!