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2 years ago

Get brainiest if right!! 10 points!!

Mathematics

1 answer:

Leno4ka [110]2 years ago

6 0

Answer:

Next three terms 0.28, 0.41 and 0.54

The formula for the nth term of an AP is a+(n-1)d

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It has been estimated that one million people are added to the world's population every 4.5 days. Use this rate to answer the fo

bekas [8.4K]

Answer:

81 million

Step-by-step explanation:

In one year there is 365 days, if you divide 365/4.5 the answer is 81.1. And every 4.5 days add 1 million people, then you multiply

81.1*1 000 000 = 81 100 000

approaching to the nearest million, 81 million of babies are added each year.

6 0

2 years ago

it takes 63 minutes for four people to paint nine walls how many minutes does it take seven people to paint four walls?

joja [24]

Answer:

16 minutes

Step-by-step explanation:

If it takes 63 minutes to paint 9 walls then it means for every wall, it takes 63/9=7 minutes

Since it is 4 people working for 7 mins, the individual rate is 4/7 minutes per person

When we have 7 people, then the number minutes they take will be 7*4/7=4 minutes per wall

4 min per wall for 4 walls then total time will be 4*4=16 minutes

3 0

2 years ago

A store has clearance items that have been marked down by 60%. They are having a sale, advertising an additional 15% off clearan

astra-53 [7]

Answer: 34%

Step-by-step explanation:

Given

Price is marked down by 60% with an additional discount of 15% on the marked down price

Suppose x is the original price of the item

After marking down, it is

$\Rightarrow x-x\times 0.6=0.4x$

after additional discount it is

$\Rightarrow 0.4x(1-0.15)=0.4x\times 0.85=0.34x$

Effective discount on the item is

$\Rightarrow \dfrac{x-0.34x}{x}\times 100=66\%$

Thus, a person is paying $100-66=34\%$ of the original price

6 0

2 years ago

103.468 rounded to the nearest leader

nevsk [136]

Answer:103

Step-by-step explanation:

103.468 rounded to the nearest leader is 103

3 0

2 years ago

Please help me i need it right now please

12345 [234]

Given:

The rate of interest on three accounts are 7%, 8%, 9%.

She has twice as much money invested at 8% as she does in 7%.

She has three times as much at 9% as she has at 7%.

Total interest for the year is $150.

To find:

Amount invested on each rate.

Solution:

Let x be the amount invested at 7%. Then,

The amount invested at 8% = 2x

The amount invested at 9% = 3x

Total interest for the year is $150.

$x\times \dfrac{7}{100}+2x\times \dfrac{8}{100}+3x\times \dfrac{9}{100}=150$

Multiply both sides by 100.

$7x+16x+27x=15000$

$50x=15000$

Divide both sides by 50.

$x=\dfrac{15000}{50}$

$x=300$

The amount invested at 7% is $300$ .

The amount invested at 8% is

$2(300)=600$

The amount invested at 9% is

$3(300)=900$

Thus, the stockbroker invested $300 at 7%, $600 at 8%, and $900 at 9%.

4 0

2 years ago