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3 years ago

I need an ace to help me with math

Mathematics

1 answer:

diamong [38]3 years ago

8 0

Answer:

ace

Step-by-step explanation:

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Like bought 15 boos six books each cost $7 four of the books each cost $5 the rest of the books each cost $3 how many do all the

Gekata [30.6K]

Answer:

The total combined cost of 15 books is $77.

Step-by-step explanation:

Here, the total number of books purchased = 15

The cost of books = $7 for 6 books

So, the cost of six books = 6 x ( cost of 1 book) = 6 x ($7) = $42

⇒Out of 15 books, the cost of 6 books = $42 .... (1)

The cost of books = $5 for 4 books

So, the cost offour books = 4 x ( cost of 1 book) = 4 x ($5) = $20

⇒Out of 15 books, the cost of 4 books = $20 .... (2)

Now, the left books are at cost $3 each book.

The number of left books = 15 - ( 6+4) = 15 - 10 = 5

So, the cost of books = $3 for 5 books

So, the cost of five books = 5 x ( cost of 1 book) = 5 x ($3) = $15

⇒Out of 15 books, the cost of 5 books = $15 .... (3)

Now, to get the total price of 15 books add (1) + (2) + (3), we get:

$42 + $20 + $15 = $77

Hence, the total combined cost of 15 books is $77.

8 0

3 years ago

A bag contains rubber bands with lengths that are normally distributed with a mean of 6 cm of length, and a standard deviation o

nirvana33 [79]

Add the all numbers Im not sure that's the answer

6 0

4 years ago

Help!!!! I need help fast please you’ll get 20 points

aalyn [17]

I think the answer is the second on b

8 0

3 years ago

Please help, will reward brainliest.

Gekata [30.6K]

Answer:

2 out of every 5; 2:3; 2:5

Step-by-step explanation:

2 out of every 5 means that out of 5, he/she picks two (leftover 3)

the other choices are a ratio of if he/she has 2 of that then they will also have 5 of this

4 0

3 years ago

Helpppppppppppppppppppppppppppp

Oliga [24]

To find the area of a complex shape:

⇒ must split into simpler shapes

a rectangle of 8m by 7m
a rectangle of 2m by 8 m

Now let's find:

Area of a rectangle of 8m by 7m

$Area=8*7=56m^2$

Area of a rectangle of 2m by 8m

$Area = 2 * 8 = 16m^2$

Total Area = 56 + 16 = 72 m²

Answer: 72 m²

Hope that helps!

6 0

2 years ago

I need an ace to help me with math​

I need an ace to help me with math