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
statuscvo [17]
3 years ago
9

2x-y+3x=. when y is 4 and x is 3.

Mathematics
2 answers:
KIM [24]3 years ago
5 0

Answer:

2(3)-4+3(3)

Step-by-step explanation:

6-4+9=2+9=11

Gelneren [198K]3 years ago
3 0

2 x 3 - 4 + 3 x 3 = 11

Do PEMDAS.

Parenthesis

Exponents

Multiplication

Addition

Subtraction

You might be interested in
Please help, will give brainlist
yulyashka [42]

Answer:

VERTICAL

Step-by-step explanation:

6 0
2 years ago
9.4 The heights of a random sample of 50 college stu- dents showed a mean of 174.5 centimeters and a stan- dard deviation of 6.9
gladu [14]

Answer:  a) (176.76,172.24), b) 0.976.

Step-by-step explanation:

Since we have given that

Mean height  = 174.5 cm

Standard deviation = 6.9 cm

n = 50

we need to find the 98% confidence interval.

So, z = 2.326

(a) Construct a 98% confidence interval for the mean height of all college students.

x\pm z\times \dfrac{\sigma}{\sqrt{n}}\\\\=(174.5\pm 2.326\times \dfrac{6.9}{\sqrt{50}})\\\\=(174.5+2.26,174.5-2.26)\\\\=(176.76,172.24)

(b) What can we assert with 98% confidence about the possible size of our error if we estimate the mean height of all college students to be 174.5 centime- ters?

Error would be

\dfrac{\sigma}{\sqrt{n}}\\\\=\dfrac{6.9}{\sqrt{50}}\\\\=0.976

Hence, a) (176.76,172.24), b) 0.976.

8 0
3 years ago
Find the inverse of the relation (-3,4), (-1,0), (6,0).
allochka39001 [22]

To find the inverse of a relation, we switch the x and y values in each point.

So the inverse would be {(4, -3), (0, -1), (0, 6).

7 0
3 years ago
Read 2 more answers
Select all irrational numbers.
const2013 [10]
The answers are A and D.
The numbers that you cannot simplify without having a radical in the answer are irrational numbers. 

√(4/16) = 1/4 or -1/4, rational number
√(9/16) = 3/4 or -3/4, rational number
√(9/4) = 3/2 or -3/2, rational number

√(3/16) = √(3)/4, NOT a rational number, cannot remove radical
√(3/4) = √(3)/2, NOT a rational number, cannot remove radical 
5 0
3 years ago
Read 2 more answers
The Houston rockets scored 66 points in the second half. There are 24 minutes in a half. What was the average number of points p
anastassius [24]
The answer is 2.75, I believe.
3 0
3 years ago
Other questions:
  • The adjustment of the thickness of the lens to make close vision possible is ca​
    12·1 answer
  • Solve the following quadratic equation by the square root property of equality. <br> (x-8)^2=48
    12·1 answer
  • Please Help and explain!!!!!!!<br> Thanks
    12·2 answers
  • Felix is going to paint a wall. The wall is 23 feet long by 8 feet high. A gallon of paint costs $11 and covers 320 square feet
    15·1 answer
  • Killian went to the movies with his mother, 2 brothers, and 2 sisters. The theater had choices of 2 different types of soda and
    15·1 answer
  • Use double number lines to find the missing number. Write a percent proportion and solve each problem.
    10·1 answer
  • Whats the squareroot of 144 needs to be simplified
    8·2 answers
  • What is the solution of x + 1/5 (x - 1) = 1?
    7·1 answer
  • 6th grade math help me pleaseeeee
    8·1 answer
  • I AM STUCK AND NEED HELP will give 30 points
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!