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
Vesnalui [34]
3 years ago
13

Please help me with this math problem

Mathematics
2 answers:
gogolik [260]3 years ago
4 0

Answer: (z+2)(z-9)

Step-by-step explanation:

z^{2} -7z-18  to solve for this you need to find two numbers that if multiplied together they give you negative 18 and at the same time adds up to -7.

Those two numbers could be  -9 and 2 .

now rewrite the expression like this.

z^{2} +2z - 9z -18   Group them  

((  z^{2} +2z) ( -9z- 18)    Factor it out z in the first grouping

z(z +2)  -9(z + 2)          factor out  x+2

(z +2 ) (z-9)

erik [133]3 years ago
3 0

Answer:

(z-9)(z+2)

Step-by-step explanation:

U have to find numbers which when u multiply u get -18 and subtract u get -7

-18= -9×+2,2-9=-7

Z²+2z-9z-18

Z(z+2)-9(z+2)

(Z-9)(z+2)

You might be interested in
What is the cheapest way to go to a ball game if the admissions options are as shown? A) $10 for a single B) $15 for a couple C)
vivado [14]

Answer: C

Step-by-step explanation: A = 10 for one person. B = 7.5 for one person. C = 6.67 for one person. D = 8.75 for one person. E = 10 for one person.

Out of all of these, C is the cheapest.

5 0
2 years ago
What are the solutions to the equation <br><img src="https://tex.z-dn.net/?f=%20%7Cx%20-%208%7C%20%20%2B%202%20%3D%2020" id="Tex
nexus9112 [7]

Answer:

Solutions are -10 and 26

Step-by-step explanation:

( - the abolute sign I'm using

( x - 8 ) + 2 = 20

( x - 8 ) = 18

x - 8 = 18 (postive case)

x - 8 + 8 = 18 + 8

x = 26

( x - 8 ) = 18

x - 8 = -18 (negative case)

x - 8 + 8 = -18 + 8

x = -10

8 0
3 years ago
The manager of a shopping mall distributed a customer-satisfaction survey by handing it to people as they came through one of th
Tresset [83]

Answer:

The correct option is D.  No, because a random sample from all customers of the shopping mall was not selected

Step-by-step explanation:

In statistics, Bias can be described as a term which depicts error if a sample is not taken evenly or it depicts errors taken from an unjust sampling.

In statistics, sampling bias means the errors which occur if one part of the population is favoured more then the rest of the populations. In this kind of bias, the individuals for experimentation are not chosen randomly.

As the customer satisfaction survey was distributed in only one of the gates hence, it does not give a generalized result and the result is biased.

6 0
3 years ago
Read 2 more answers
Help please! Find the Surface area. Whoever gets it right ill give Brainliest!
11Alexandr11 [23.1K]

Answer:

284.6 square yards

284.6 yd^2

Step-by-step explanation:

Base: 7 × 13 = 91

Rectangle Sides: 6.1 × 13 = 79.3 (x2 = 158.6)

Triangle Sides: 5 × 7 = 35 (÷2 ×2 = 35)

Add: 91 + 158.6 + 35 = 284.6

8 0
3 years ago
Solve y(2y+1)+10=0 by using the Quadratic Formula.
Lorico [155]

Answer:

y= -1+- i √79/4

Step-by-step explanation: Here is the answer ^^

8 0
2 years ago
Other questions:
  • To finance her community college education, Sarah takes out a loan for $3700. After a year Sarah decides to pay off the interest
    5·1 answer
  • Two math classes took the same classes
    12·1 answer
  • If the 10th of the 10 consecutive numbers is 10, what is their sum?
    11·1 answer
  • PLS HELP I GIVE YOU 25 POINTS the elevation of the first rest stop is -10 feet the elevation of the second rest stop is -15 feet
    13·1 answer
  • Anyone? Help please its my final test!!!
    14·1 answer
  • Tthere are 5 people already in the pool.jonas and his 2 friends get in.how many people are in the pool ​
    8·1 answer
  • Your grandmother has given you a gift of $1500 for your birthday. You are thinking about your future and
    11·2 answers
  • What temperature is halfway between -4 degrees and -5 degrees? Give your answer as a fraction, decimal.
    10·2 answers
  • Subtract 2xy from 6xy<br>​
    11·2 answers
  • What is the sum of 5/11 + 1/3 in lowest terms?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!