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
den301095 [7]
3 years ago
11

Sophie is 3.5 years younger than her brother. She knows that when she is b years old, her brother is b+3.5 years old. Right now,

Sophie is 11.5 years old.
How old is Sophie's brother?
Write your answer as a whole number or decimal
Mathematics
2 answers:
evablogger [386]3 years ago
5 0
The answer is 15, cause if you add 3.5 and 11.5 that equals 15
DiKsa [7]3 years ago
3 0

Answer:

Sophie's brother is 9 exactly

Step-by-step explanation:

You might be interested in
Factor the polynomial function over the complex numbers. f(x)=x^4-x^3-2x−4 Enter your answer in the box. f(x) = The answer is: (
Vladimir79 [104]

Answer:

Factors: (x+i\sqrt2)(x-i\sqrt2)(x+1)(x-2)=0

Step-by-step explanation:

We are given a polynomial:

f(x)=x^4-x^3-2x-4

We have to factor the given polynomial into its complex factors.

The factorization can be done as follows:

f(x)=x^4-x^3-2x-4 = 0\\x^4-x^3-2x-4 = 0\\x^4-4-x^3-2x=0\\\text{Identity: }a^2-b^2 = (a+b)(a-b)\\(x^4-4)-(x^3+2x) = 0\\(x^2+2)(x^2-2)-x(x^2+2) = 0\\(x^2+2)(x^2-2-x) = 0\\(x^2+2)(x^2-x-2) = 0\\(x^2+2)(x^2-2x-+x-2) = 0\\(x^2+2)((x(x-2)+1(x-2))=0\\(x^2+2)(x+1)(x-2)=0\\\text{Identity: }a^2-b^2 = (a+b)(a-b)\\(x^2-(\sqrt{-2})^2)(x+1)(x-2)=0\\(x+i\sqrt2)(x-i\sqrt2)(x+1)(x-2)=0

8 0
3 years ago
Match the graph to the correct inequality.
Trava [24]
The answer to the question is b
8 0
3 years ago
Read 2 more answers
PLEASE HELP DUE IN 1 HOUR
kobusy [5.1K]
Choosing blue or red: 3 blue + 4 red = 7 marbles
3 blue + 2 green + 4 red + 1 yellow = 10 marbles

Probability blue or red marble: 7/10

Choosing a marble that isn't blue or red: 2 green + 1 yellow = 3 marbles
Total marbles: 3 blue + 2 green + 4 red + 1 yellow = 10 marbles

Probability non-blue or red marble: 3/10
5 0
3 years ago
5x + 1y + 4z=-1
kati45 [8]

Answer:

[7, -4, -8]

Step-by-step explanation:

Just simply plug in each choice into the equations to confirm their authenticities.

7 0
3 years ago
What is the surface of the solid ​
iVinArrow [24]

Answer:

I think it is 174

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • EXPLAIN YOUR ANSWER NEED HELP ASAP
    5·1 answer
  • What is the vertex of the function f(x) =1/2 x2 + 3x +3/2 ?
    15·1 answer
  • The graphs shown are of the form y = ax2. Which graph has the smallest value for a?
    13·1 answer
  • ethan bought a printer on sale for $59.99 and a jump drive for $6.99. the sales tax on the total was $5.36. Ethan gave the sales
    11·1 answer
  • It takes 1 and 1 4th cups of milk to make 8 pancakes, how many cups of milk is needed to make 20
    11·1 answer
  • What is LCM of two numbers if one number is a multiple of the other? give an example
    11·1 answer
  • Please answer quick!!! help!
    6·1 answer
  • If the image was reflected across x = -2, what would be the ordered pair for D′?
    7·1 answer
  • 7x - 2(3x - 5) = 26 ​
    9·2 answers
  • Solve the inequalities by graphing. Select the correct graph. 2x - y > 4 2x - y < -2
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!