If a • b = 0, and a ≠ 0, then b=

Answer: 5573

Step-by-step explanation:

The size of the left upper chamber of the heart is one measure of cardiovascular health. When the upper left chamber is enlarged, the risk of heart problems is increased. The paper "Left Atrial Size Increases with Body Mass Index in Children" (International Journal of Cardiology [2009]:1-7) described a study in which the left atrial size was measured for a large number of children age 5 to 15 years. Based on this data, the authors concluded that for healthy children, left atrial diameter was approximately normally distributed with a mean of 26.4 mm and a standard deviation of 4.2 mm.Approximately what proportion of healthy children has left atrial diameters less than 24 mm?Approximately what proportion of healthy children has left atrial diameters greater than 32 mm?Approximately what proportion of healthy children has left atrial diameters between 25 and 30 mm?For healthy children, what is the value for which only about 20% have a larger left atrial diameter?

plsss help me! I’m stuck :(

determine which operation is needed in the blank so that the expression simplifies to 25.

40_10_4_(8_2_3)_5^2

Which Property of Addition does 9 + 0 = 9 illustrate ? A. Distributive Property B. Identity Property C. Zero Property D. Commutative Property​

Solve the system of linear equations by graphing y = -4x + 2 ; y = -x - 1
What is the solution?

56.4 - 27.3
what is the anwser

equation of the horizontal line that passes through the point (-5,1)

Find H, help me and get brainlist.​

which inequality statement describes the two numbers on a number line -7 and a number 12 units to the right of -7

The diagram was constructed with straightedge and compass tools.


Select all segments that have the same length as segment AC.

Please and thank you

Name an irrational number ( in radical form) located between 11 and 12. Explain answer.​

3. Reason Can you write
3+ 4+ 7 = 14 as a multiplication
sentence? Explain.

if you have distance and time how do you find speed?
​

A bird goes from a higher location to a lower location at a
rate of 2 meters per second,
Which equation models the change in the bird's position at 30 seconde?
A. (-30)(-2) = -60
B. 30(-2) = -60
C. 30.2 = 60
D. 30(-2) = 60

help me please I will mark as top answer ​

Will give brainliest answer, so please help!!

Consider the following figure where l1 and l2 are parallel and cut by transversals g1
and g2.
Part A: Determine the values of M, N, V and R.

Which of these is NOT an example of a property tax?

F) Tax paid on the value of a farm a person owns

G) Tax paid on the value of a piece of land a person owns

H) Tax paid on the value of a piece of furniture a person owns

J) Tax paid on the value of a home a person owns

If -7 is added to a number, the result is 12. What
is the number?
A. -5
B. 5
C. 12
D. 19

1.A cook has 2 3/4 pounds of ground beef.How many quarter-pound burgers can he make?

2.A child needs to take 1/6 tablespoons of medicine per day in 4 equal doses.How much medicine is in each dose?

3.How many 5/6 cup salt shakers can be filled from 24 cups of salt?
​

Help easy question......Branliest reward

A car company has three sales people, Anna, Mustapha and Joshua.
During March, Anna sold 21 cars, Mustapha sold 12 cars and Joshua sold 15 cars.
Write down and simplify the ratio of the number of cars they sold during March.
:
Anna : Mustapha : Joshua =
..........

List the integers from greatest to least.

{-23, -17, -4, -3, -15, -18, -26}

Hi-Tech, Inc., is a computer training company serving metropolitan Toronto, Canada. The firm contracts a group of part-time instructors to teach a variety of courses concurrently at its downtown location. While demand is so high that any class offered will be filled immediately, Hi-Tech is looking at only two courses at this time: Introduction to Computers (ITC) and Creation of Web Pages (CWP). Each ITC class requires 7.5 hours of preparation/instruction time and contributes a profit of $720, whereas each CWP class calls for only 3 hours and contributes $300. Available time for these two courses is limited to 56 hours a day. There is a restriction on the maximum number of trainees that can be efficiently handled. More specifically, at most 100 students can be accommodated on a daily basis without putting a strain on the facility and support staff. Additionally, each course has a class size limit - 6 for ITC and 12 for CWP. Hi-Tech would like to maximize the daily total profit from both courses so that it could offer certain other courses on a "goodwill" basis. Formulate an AILP for management to decide how many classes should be scheduled for each subject daily
What is the objective function?

) Samantha has 6/7 of a apple pie. Drayden has 3/7 of a apple pie. How much pie do they have altogether? (Make sure to simply if possible) *
10 points
1 and 2/7
9/14
3/7
9/10

2) After her birthday party, Kelsey has 8/9 of pizza left over. Her best friend Savanna ate 1/9 of the leftover pizza. How much of Kelsey's pizza is left? *
10 points
10/9
7/9
None
1/3


3) Simplify the following fraction: 9/12 *
10 points
4/6
9/12 - You can't simplify
1/2
3/4

What are the major elements present in carbohydrates?
C,H,O
C,H,O,N
C,H,O,N,P
C,Fe,Si​

solve for y in the equation -y+9=23

Please help me this brought my grade down and I need to get it up by next week please please help im giving all my points away for it

Solve for x.
16x^2- 9=0