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
Dovator [93]
3 years ago
7

A2b -b2 a=4 and b= -7

Mathematics
1 answer:
cestrela7 [59]3 years ago
8 0

Step-by-step explanation:

hope this helps you dear friend.

You might be interested in
If you draw a card with a value of 4 or less from a standard deck of cards, I will pay you 165$ if not your pay me $45. (Aces ar
jekas [21]

Answer: The required expected value is $3.46.

Step-by-step explanation:

Since we have given that

Number of value of 4 or less are

2,3,4

So, there are 12 in numbers.

So, probability would be

\dfrac{12}{52}

Since Aces are considered as the highest card in the deck.

So, remaining probability would be

\dfrac{40}{12}

Amount paid or value of 4 or less = $165

Amount not paid for other case = $45

So, the expected value would be

\dfrac{12}{52}\times 165-\dfrac{40}{52}\times 45\\\\=\dfrac{1980}{52}-\dfrac{1800}{52}\\\\=\dfrac{180}{52}\\\\=3.46

Hence, the required expected value is $3.46.

7 0
3 years ago
Which statements are true about number sets? Select all the correct answers
expeople1 [14]

Answer: 1 and 3

Step-by-step explanation:

5 0
3 years ago
Manny has car insurance and was in an accident with a bill totaling $11,500. The insurance company says he needs to pay the firs
Natalija [7]

Answer:

Deductible

Step-by-step explanation:

you pay the first $1,000 of covered services yourself

4 0
2 years ago
Jeanne babysits for $6 per hour. She also works as a reading tutor for $10 per hour. She is only allowed to work 20 hours per we
Ksenya-84 [330]

<u>Part a)</u> Use a system of inequalities to model the scenario

Let

x-------> represent babysitting hours

y-------> represent tutoring hours  

we know that

x+y \leq20 --------> inequality 1  

6x+10y \geq 75 --------> inequality 2

<u>Part b)</u> Use the model created in part A to create a graph representing Jeanne’s probable income earned and possible number of hours worked this week

we know that

x+y \leq20 --------> inequality 1

This inequality represent Jeanne’s possible number of hours worked this week

Using a graph tool

the solution of this inequality is the shaded area

see the attached figure N 1

6x+10y \geq 75 --------> inequality 2  

This inequality represent Jeanne’s probable income earned this week

Using a graph tool

the solution of this inequality is the shaded area

see the attached figure N 2

<u>Part c)</u> Analyze the set of coordinate values that represent solutions for the model created in part A. Choose one of the coordinates within the solution and algebraically prove that the coordinate represents a true solution for the model

we have the system of inequalities

x+y \leq20 --------> inequality 1

6x+10y \geq 75 --------> inequality 2

the solution of the system of inequalities is the shaded area

using a graph tool

see the attached figure N  3

Let

A(10,10) ------> see the attached figure N  3

The point belongs to the shaded area, so it is a system solution.

If the point is a solution, it must satisfy both inequalities.

<u>Prove algebraically </u>

A(10,10)

substitute the value of x and y in the inequalities

<u>inequality 1</u>

10+10 \leq20

20 \leq20 ------> is ok

<u>inequality 2</u>

6*10+10*10 \geq 75

160 \geq 75 -------> is ok

the point A satisfy both inequalities

therefore

the point A is a solution of the system

7 0
3 years ago
Find the solutions to the equation below.<br> Check all that apply.<br> x2 - 4 = 0
Gennadij [26K]

Answer:

2

Step-by-step explanation:

First you add 4 to both sides and get

2x=4

then you divide by 2 and get

4/2=x

4/2=2

x=2

8 0
3 years ago
Read 2 more answers
Other questions:
  • HELP PLS GIVING BRAINLIEST
    10·1 answer
  • (-2x + 6)1/5 = (-8 + 10x)1/5
    10·1 answer
  • What will be the account balance after 20 years?
    5·2 answers
  • Find the solution to the equation below. 2x^2+3x-20=0
    6·2 answers
  • Asia uses an overhead projector to enlarge a drawing. The original measure 75 cm wide by 100 cm high. She moves the projector so
    10·1 answer
  • Plz help bro I’ve asked this so many times
    15·1 answer
  • Please Help Me. Add (2x^2+4−x^3)+(−4x^2+6x^3−2) Express the answer in standard form. Enter your answer in the box.
    10·1 answer
  • What is the most common mistake most students make when learning how to shift a quadratic graph from the original parent graph?
    7·1 answer
  • -2/3×3/5+5/2-3/5×1/6​
    8·1 answer
  • Find the nth term of the sequence 4, 7, 10, 13, …
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!