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
asambeis [7]
2 years ago
15

Khan question, please help

Mathematics
1 answer:
barxatty [35]2 years ago
3 0

Answer:

A

Step-by-step explanation:

Khan gives you right answer and tells you what's wrong, but this site is for help so, all you need to do is use the destructive property.

12 x 2= 24 12 x 3 = 36 12 x -1 = -12

now you have the original expression, 24 + 36 - 12 (without the letters.)

You might be interested in
A company makes triangular plates for individual slices of pizza. For each plate, the base is 7 inches and the height is 12 inch
kaheart [24]
42 inches squared

base times height divided by two

7x12 divided by two is 42

8 0
3 years ago
Read 2 more answers
Find the measures of
ki77a [65]

3y+15=4y-3

Subtract 3y from both sides

15=y-3

Add 3 to both sides

Y=18

4(18)-3

72-3

69 both angles are 69

8 0
3 years ago
Consider the functions. F(x)=(x+1)2-4 and g(x)=-4|x+1| which statement compares the range of the functions?
Andreyy89

Answer:

<h2>        The fourth</h2>

Step-by-step explanation:

Vertex of f is (-1, -4) so its range is limited to y≥-4

|x+1| is always ≥0 therefore -|x+1| is always ≤0 {4 is insignificant to this - slope doesn't mean in range} so its range is limited to y≤0

3 0
3 years ago
A researcher wants to test if the mean annual salary of all lawyers in a city is different from $110,000. A random sample of 50
KiRa [710]

Solution :

This is the two tailed test.

The null hypothesis and the alternate hypothesis is as :

Null hypothesis is $H_0:\mu=110000$

Alternate hypothesis is $H_0:\mu \neq110000$

$\overline x = 112000, \ \mu = 110000, \sigma = 16100, n =  50, \alpha = 0.02$

Therefore, the critical value of z is :

$z_{\alpha} = -2.33 \text{ and}\  2.33$

Now the test statics is :

$z=\frac{\frac{(\overline x - \mu)}{\sigma}}{\sqrt n}$

$z=\frac{\frac{(112000-110000)}{16100}}{\sqrt {50}}$

$z=0.87$

The test statics is 0.878

We see that it is a right tailed test.

$P(z > 0.878)=1-P(z

$P- \text{value}= \ 2 \times 0.19$

              = 0.3800

Thus , P-value > α

So we fail to reject the null hypothesis.

5 0
3 years ago
Find the volume of a rectangular box having width 2.5 ft, length 4.863 ft, and height 4.331 ft. Volume: ft3
Minchanka [31]
Volume = width x height x length 
= 2.5 x 4.331 x 4.863 
= 52.65 ft^3
4 0
3 years ago
Read 2 more answers
Other questions:
  • Meteorologists in Texas want to increase the amount of rain delivered by thunderheads by seeding the clouds. Without seeding, th
    6·1 answer
  • Troy is making a flag shaped like a square. Each side measure 12 inches. He wants to add ribbon along the edges. He has 36 inche
    14·2 answers
  • A particle shade of orange paint has 2 cups of yellow paint for every 3 cups of red paint on the double number line circle the v
    14·1 answer
  • I need help doing this
    5·2 answers
  • A trapezoid with bases that measure 8 inches and 11 inches has a height of 3 inches. What is the area of the trapezoid?
    7·1 answer
  • Which set of ordered pairs represents a function?
    6·2 answers
  • Question 3 Rewrite in simplest rational exponent form √x • 4√x. Show each step of your process.
    10·1 answer
  • ASAP! Tu has 25 flat flowers. He needs 36 of flat flowers for a project. How many more flats of flowers does he need? Which equa
    11·2 answers
  • Solve the equation.<br> -5r-1=7r+5
    8·2 answers
  • (image) determine the surface area of the rectangular prism net below
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!