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
loris [4]
3 years ago
15

7X +15 X equals help me please

Mathematics
2 answers:
Alja [10]3 years ago
8 0
I don’t know if I’m correct but when i checked I got =105
hram777 [196]3 years ago
4 0
Answer:

7x+15x= 22x
Add the coefficients.
You might be interested in
What is the length of the hypotenuse
ss7ja [257]

Answer:

15

Step-by-step explanation:

The Pythagorean's Theorem states that a^2 + b^2 = c^2, so 81 + 144 = 225, and 225 square rooted is 15.

6 0
2 years ago
Read 2 more answers
x P(x) 0 0.25 1 0.3 2 0.1 3 0.35 Find the standard deviation of this probability distribution. Give your answer to at least 2 de
barxatty [35]

Answer:

The standard deviation of this probability distribution is 1.2.

Step-by-step explanation:

We have that:

P(X = 0) = 0.25

P(X = 1) = 0.3

P(X = 2) = 0.1

P(X = 3) = 0.35

Mean:

Each value multiplied by its probability. So

M = 0*0.25 + 1*0.3 + 2*0.1 + 3*0.35 = 1.55

Variance:

Sum of the squares of the values subtracted from the mean, and multiplied by its probability.

V = 0.25*(0-1.55)^2 + 0.3*(1-1.55)^2 + 0.1*(2-1.55)^2 + 0.35*(3-1.55)^2 = 1.4475

Standard deviation:

Square root of the variance. So

S = \sqrt{V} = \sqrt{1.4475} = 1.2

The standard deviation of this probability distribution is 1.2.

6 0
3 years ago
MaryAnn can hike 8 miles on 2 hours. How long will it take her to hike 24 miles?
Tatiana [17]
48 hours because you times 24 by 2.
6 0
3 years ago
Read 2 more answers
Help me out guys I’ll give u a star
pychu [463]
The answer would be 9 :)!
5 0
3 years ago
Uhh help?
Leni [432]
Hope you can read that okay

5 0
3 years ago
Other questions:
  • Help please! A picture will be provided above because I don’t know how to type them out correctly. Questions 8-13, and 19 ONLY!
    12·1 answer
  • If 8 apples cost $1.60, how much is one apple?
    13·2 answers
  • What’s the answer for Leah cuts a 7 inch piece of ribbon into pieces that are 1/2 an inch long . How many pieces of ribbon did s
    5·2 answers
  • Which of the following shows the equation below rewritten in the form ax^2+by+c=0 ? 2x^2+x+3=4(3x-5)
    7·1 answer
  • Pleaseee anybody help me with this question it’s more than one answer
    11·1 answer
  • Which measurement is most accurate to describe the weight of a baby
    5·2 answers
  • In a popular online role playing game, players can create detailed designs for their character's "costumes," or appearance. Huds
    11·1 answer
  • Jenai's mother traveled 40 miles in 1hr, how many miles did she travel in 3 hours?
    7·2 answers
  • Dustin's Lawn Care Service Customer Amount Paid Mrs. Schmitt $15.75 Mr. Jones $9.25 Mrs. Adams $22.50 Mr. Meyer $50.00 How much
    9·1 answer
  • Can someone please help me with this question
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!