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
gtnhenbr [62]
3 years ago
14

Four less than half a number is 15. Find a number.

Mathematics
2 answers:
larisa [96]3 years ago
6 0

38

\frac{x}{2} - 4 = 15

x - 8 = 30

x = 38

Oliga [24]3 years ago
3 0

Answer:

38

Step-by-step explanation:

You might be interested in
benny had 266 dollars to spend on 9 books. After buying them he had 14 dollars. How much did each book cost?
Anastaziya [24]

Answer:

The books cost $28 dollars each.

Step-by-step explanation:

$266 - $14 = $252

then take $252 divided by 9 = $ 28

7 0
2 years ago
Suppose the waiting times in an emergency room are normally distributed with a mean (mean) of 40 and a standard deviation (sigma
kipiarov [429]

Answer:

0.68269

Step-by-step explanation:

When we are to find the z score for population where a random sample is picked, the z.score formula we use is

z = (x-μ)/Standard error, where

x is the raw score,

μ is the population mean

Standard error = σ/√n

σ is the population standard deviation

n = random number of samples

For : x = 38 minutes, μ = 40, σ = 10, n = 5

z = 38 - 40/10 /√25

= -2/10/5

= -2/2

= -1

Determining the probability value using z table

P(x = 38) = P(z = -1)

= 0.15866

For : x = 42 minutes, μ = 40, σ = 10, n = 25

z = 42 - 40/10 /√25

= 2/10/5

= 2/2

= 1

Determining the probability value using z table

P(x = 42) = P(z = 1)

= 0.84134

The probability that their average waiting time will be between 38 and 42 minutes is calculated as

P(-Z<x<Z)

= P(-1 < x < 1)

= P(z = 1) - P(z = -1)

= 0.84134 - 0.15866

= 0.68269

Therefore, the probability that their average waiting time will be between 38 and 42 minutes is 0.68269

3 0
3 years ago
Don’t know 14<br> And I need help
Veronika [31]

Answer:

mass in grams /over/ volume in cubic centimeters!

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Convert.<br>5 days =<br>lao<br>hours​
Andreas93 [3]

Answer:

120 Hours

Step-by-step explanation:

24 hours in a day

5 days

24 x 5 = 120

8 0
2 years ago
Write an equation for the description.
Nesterboy [21]
Answer

x - 15 = 18

Explanation

X is the variable that is required to get the answer 18
8 0
2 years ago
Read 2 more answers
Other questions:
  • Find the discriminant of the equation. (Show how you got your answer)<br> a. X^2 + 4x + 9 = 0
    8·1 answer
  • I need this answered ASAP please I beg of you. <br> I’m really confused on what to do here.
    6·1 answer
  • If you knew the length of the opposite side and the adjacent, which formula would you use to determine the length of the hypoten
    11·1 answer
  • I need help for this, thanks
    9·1 answer
  • What is the volume of the cylinder?<br><br> Radius:3m<br><br> Height:17m
    10·1 answer
  • Find the 10 th term of the following geometric sequence. 1,5, 25, 125, ...​
    15·1 answer
  • Trey has plastic cubes stored in a box that measures 4 ft long, 212ft wide, and 2 ft tall.
    9·1 answer
  • Elements in group 17 on the period table will most likely bond with elements in group
    5·1 answer
  • HELP ME PLEASE GUYS!! :)
    9·2 answers
  • I need help,<br> Find the perimeter of the rectangle. Write your answer in Scientific Notation
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!