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
Wittaler [7]
2 years ago
7

A rectangle has a width of 5 cm and a length of 10 cm. If the width is increased by 3, how does the perimeter change?

Mathematics
2 answers:
kondaur [170]2 years ago
5 0

Answer:

The perimeter changed by 6 cm.

Step-by-step explanation:

A rectangle has a width of 5 cm and a length of 10 cm.

The perimeter is = 2(length+width)

Perimeter = 2(10+5)

= 2(15)

= 30 cm

When the width is increased by 3, and lets assume that the length is same .

So, length is 10 cm and width is 8 cm.

Perimeter =  2(10+8)

= 2(18)

= 36 cm

Change in perimeter =36-30=6 cm

So, the perimeter changed by 6 cm.

wariber [46]2 years ago
4 0

Answer:

The new perimeter would be 36cm.

Step-by-step explanation:

The perimeter would change because you add 3 to two sides, because the perimeter originally was 5+5+10+10. Now, it's (5+3)+(5+3)+10+10. Which is 36.

You might be interested in
4x + 6 < 3x − 5 I have to solve the inequality please help
garik1379 [7]

Answer:

x < -11 or x ∈ (-∞, -11)

Step-by-step explanation:

4x + 6 < 3x - 5

<=> 4x - 3x < -5 - 6

<=> x < -11

7 0
2 years ago
Read 2 more answers
7x−4≥−15+2x solve in interval notation
Leviafan [203]

Answer:

[-11/5,∞)

Step-by-step explanation:

1. Add 4 to both sides: 7x-4+4≥-15+2x+4

2. Simplify: 7x≥2x-11

3. Subtract 2x from both sides: 7x-2x≥2x-11-2x

4. Simplify: 5x≥-11

5. Divide both sides by 5: 5x/5≥-11/5

6. Simplify: -11/5

7 0
3 years ago
Is 144 a natural number yes or no​
Black_prince [1.1K]

Answer:

is 144 a natural number yes or no

Yes

I'm not sure

5 0
3 years ago
Please show all work thank you math experts you’re the best !
Ne4ueva [31]

Answer:

1. -141

2. 0.98

3. 62.13

Step-by-step explanation:

1. 35 - 176 -> 176 - 35 = 141, then just make it negative

2. 0.55 x 1.79 = 0.9845 -> 0.98

3. 11.38 x 5.46 = 62.1348 -> 62.13

6 0
2 years ago
Explain the difference between a stratified sample and a cluster sample. (Select all that apply.) In a cluster sample, the only
ziro4ka [17]

Answer:

  • In a cluster sample, every sample of size n has an equal chance of being included.
  • In a stratified sample, random samples from each strata are included.
  • In a cluster sample, the clusters to be included are selected at random and then all members of each selected cluster are included.
  • In a stratified sample, every sample of size n has an equal chance of being included

Step-by-step explanation:

In a stratified sample the population is divided into different segments and then we take random elements from each segment.

In a cluster sample, the sample is divided into segments (or clusters) and then the sample is taken by selecting different clusters.

Therefore, in the cluster sample we take ALL elements from different clusters while in a stratified sample we take SOME elements from the different sections.

Now let's take a look at the options given:

  • In a cluster sample, the only samples possible are those including every kth item from the random starting position: FALSE. In the cluster sample we select all items from the cluster.
  • In a cluster sample, every sample of size n has an equal chance of being included: TRUE. if we divide the sample into clusters of size n then every cluster has an equal chance of being selected (since we select them at random).
  • In a stratified sample, random samples from each strata are included: TRUE. We already said that we take a random sample from each segment (strata).
  • In a stratified sample, the only samples possible are those including every kth item from the random starting position: FALSE. We can apply different methods to select our sample from each strata.
  • In a cluster sample, the clusters to be included are selected at random and then all members of each selected cluster are included. TRUE. This is the definition of cluster sample we wrote at first.
  • In a stratified sample, every sample of size n has an equal chance of being included: TRUE, we take samples from elements, not from stratas.
  • In a cluster sample, random samples from each strata are included: FALSE. This is the definition of stratified sample.
  • In a stratified sample, the clusters to be included are selected at random and then all members of each selected cluster are included: FALSE. This is the definition of cluster sample.

8 0
3 years ago
Other questions:
  • Please can someone explain how to work out this
    13·1 answer
  • A new truck that sells for $25,000 depreciates (decreases in value) 11% each year. What will be the value of the truck in 2 year
    7·2 answers
  • Dwight has 3 baseball cards, and Ellis has 9 baseball cards. If Dwight and Ellis put their baseball cards together and then divi
    8·2 answers
  • Sarah has going to work for 60 days. On 39 of those days she arrived at work before 8:30 AM. On the rest of the day she arrived
    8·1 answer
  • Find the 22nd term of the arithmetic sequence whose common difference is d=2 and first term is a1 = -25
    7·2 answers
  • The difference of two numbers is 6 and their product is 55 what are the two numbers
    6·1 answer
  • Will someone help me find the missing angles please
    15·1 answer
  • On a coordinate plane, two parabolas open up. The solid-line parabola goes through (negative 3, 9), has a vertex at (negative 1,
    10·1 answer
  • Find the value of each variable. Assume it is a 45 45 90 triangle. Round to the nearest tenth.
    6·1 answer
  • A city has a population of 350000 the population has decreased by 30% in the past ten years what was the population Of the city
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!