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
Anastaziya [24]
3 years ago
11

Find each percent of change. Round to the nearest percent if necessary. State whether the percent of change is an increase or a

decrease.
1. 30 inches to 24 inches

2. $126 to $150
Mathematics
2 answers:
IgorLugansk [536]3 years ago
7 0
1. 20% decrease

2. 16% increase

Explaination:

Question 1.

30 inches to 24 inches is a decrease, because 24 is smaller than 30.

(30-24)/30 * 100%

= 6/30 * 100%

= 20%

Ans: 20% decrease


Question 2.

$126 to $150 is an increase, because 150 is larger than 126.

(150-126)/150 * 100%

= 24/150 * 100%

= 4/25 * 100%

= 16%

Ans: 16% increase
Yuri [45]3 years ago
3 0

Answer:

16%⬆

Step-by-step explanation:

You might be interested in
A walking path across a park is represented by the equation y=-3x-6. A new path will be built perpendicular to this path. The pa
galben [10]
The equation of the new path would be y=1/3x+4.

Explanation
If two lines are perpendicular, their slopes are negative reciprocals of each other.  The original equation is written in slope-intercept form, y=mx+b, where m is the slope.  In this equation, m=-3=-3/1.

In the new equation, the slope would be the opposite sign and flipped; this means it would be 1/3.

We can use the point given, the slope and slope-intercept form to write the equation of the new line:

y=mx+b
3=1/3(-3)+b
3=1/3(-3/1)+b
3=(-3/3)+b
3=-1+b

Add 1 to both sides:
3+1=-1+b+1
4=b

This makes the equation y=1/3x+4.
6 0
3 years ago
A varies inversely as the square of B. If A is 1 when B is 3, find A when B is 5
RideAnS [48]

Answer:

0.36

Step-by-step explanation:

A= K/B^2

K= A × B^2

K= 1 × 3^2

K= 1×9

K= 9

Therefore if B is 5 then A can be calculated as follows.

K= A × B^2

9= A × 5^2

9= A × 25

9= 25A

A= 9/25

A= 0.36

Hence A is 0.36

6 0
3 years ago
A market surveyor wishes to know how many energy drinks teenagers drink each week. They want to construct a 98% confidence inter
frosja888 [35]

Answer:

The minimum sample size required to create the specified confidence interval is 1024.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.98}{2} = 0.01

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.01 = 0.99, so z = 2.327

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

What is the minimum sample size required to create the specified confidence interval

This is n when M = 0.08, \sigma = \sqrt{1.21} = 1.1.

M = z*\frac{\sigma}{\sqrt{n}}

0.08 = 2.327*\frac{1.1}{\sqrt{n}}

0.08\sqrt{n} = 2.327*1.1

\sqrt{n} = \frac{2.327*1.1}{0.08}

(\sqrt{n})^{2} = (\frac{2.327*1.1}{0.08})^{2}

n = 1024

The minimum sample size required to create the specified confidence interval is 1024.

3 0
4 years ago
The ratio of green marbles to yellow marbles in Naafay's bag is equal to 2:3. What percent of the marbles in the bag are green m
mina [271]
It is 80%  just writing random things so it can be 20 words
7 0
3 years ago
using the slope formula find the slope of the line through the points (0,0) and (3,9) use pencil and paper explain how you can u
maxonik [38]

Answer:

9/3

Step-by-step explanation:

you can't subtract from zero or you can't subtract a number from zero.

7 0
3 years ago
Read 2 more answers
Other questions:
  • The slope-intercept equation of a line is y= -7x-2. What are the slope and y-intercept of the line?
    12·1 answer
  • Mikhail recorded the heights of all the male students in his math class. The results, in inches, are: 52, 55, 56, 60, 53, 51, 64
    13·2 answers
  • What’s the answer to 3/4 +5/8
    7·1 answer
  • 1. The proceeds of a $7,500.00, 10 percent simple discounted note for 85 days is
    13·1 answer
  • If you buy a 7.5 pound pumpkin that costs 1.19 per pound, what is the cost of the pumpkin
    10·2 answers
  • laura paddles n her canoe at a speed of 6 mph for 6 miles. She then hops on her windsurfer and sails for 12 miles at a speed of
    14·2 answers
  • PLEASE HELP WHEN YOU SEE THIS
    6·1 answer
  • Write a rule to describe the transformation.
    7·1 answer
  • Answer for brainliest
    15·2 answers
  • Pls answer I will mark brainliest
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!