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3 years ago

PLEASE ANSWER ALL PARTS I WILL GIVE BRAINLIEST

1 answer:

7 0

13.542 = 35.42*0.1 +10
13.542 is 10 more than 10% of 35.42

781 = 78.1 * 10
781 is equal to 10 times 78.1

1.2 has two significant figure but 01.20 has 3 significant figure

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a dog runs 54km in just 3days ,it runs 2km more each day . how many kilometers does it run for the first 2 days?

Lesechka [4]

Let x be the distance it runs on the first day, then:-

x + x + 2 + x + 4 = 54

3x + 6 = 54

3x = 54 - 6 = 48

x = 48/3 = 16 km

So for the first 2 days it runs 16 + 18 = 34 km. Answer

7 0

3 years ago

Read 2 more answers

Work out the percentage change to 2 decimal places when a price of £8.95 is increased to £10.

kicyunya [14]

Answer:

12% increase

Step-by-step explanation:

Divide the difference between the two prices by the original price:

1.05/8.95

= 0.12

So, the percent change is 12%

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3 years ago

How many lines of symmetry dose this regular pentagon have

hichkok12 [17]

Step-by-step explanation:

5 lines of symmetry

pentagon:5 lines of symmetry

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3 years ago

You have $100,000 to get some medical supplies for your clinic. Write an expression that represents the total cost if you decide

pickupchik [31]

Answer:

(3t+100k+3m+250a)

3 0

4 years ago

Joe has one book each for algebra, geometry, history, psychology, Spanish, English and Physics in his locker. How many different

Alisiya [41]

Answer:

There are 35 different sets of 3 books Joe could choose

Step-by-step explanation:

* Lets explain how to solve the problem

- Combination is a collection of the objects where the order doesn't

matter

- The formula for the number of possible combinations of r objects from

a set of n objects is nCr = n!/r!(n-r)!

- n! = n(n - 1)(n - 2)................. × 1

Lets solve the problem

- Joe has one book each for algebra, geometry, history, psychology,

Spanish, English and Physics in his locker

∴ He has seven books in the locker

- He wants to chose three of them

∵ The order is not important when he chose the books

∴ We will use the combination nCr to find how many different sets

of three books he can choose

- The total number of books is 7

∴ n = 7

∵ He chooses 3 of them

∴ r = 3

∵ 7C3 = 7!/3!(7 - 3)! = 7!/3!(4!)

∴ $7C3=\frac{(7)(6)(5)(4)(3)(2)(1)}{[(3)(2)(1)][(4)(3)(2)(1)]}=35$

∴ 7C3 = 35

* There are 35 different sets of 3 books Joe could choose

3 0

3 years ago