A bookstore advertises 5 notebooks for $7.50. At this rate, how much would 8 notebooks cost

Mathematics

2 answers:

Elina [12.6K]4 years ago

7 0

Well first you need to divide 7.50 by 5 . You get 1.50 so then you multiply 1.50 by 8 & get $12

ale4655 [162]4 years ago

4 0

Hi!

The answer would be $12 , because if we multiply 7.50 by 8 we get 60 and when we divide that by 5 we get 12.

8 notebooks would cost $12

Proportion :
5 nb/8 7.50/x

Cross multiply
7.50 times 8=60
60 divided by 5=12

You might be interested in

Geometry math question please help

Nikolay [14]

AD is perpendicular to BC so slope Ad = -1/slope of BC

Slope of BC = (2 - (-1)) / (- 6- 3) = 3 / -9 = -1/3

So slope of AD = -1 / (-1/3) = -3/-1 = 3 Answer

4 0

3 years ago

Assigned newbits with the opposite values of oldbits if flipbits is true. ex: if oldbits = [1, 1, 0, 1] and flipbits is 1, then

Kisachek [45]

Franck's answer is better (using ~), but I just wanted to point out that the conditional in yours is slightly redundant. It's easy to forget that, since you already have a boolean value, you don't need to perform a comparison in your conditional. So you could have just done this...

<span>if x x = false; else x = true; <span>end</span></span>

5 0

3 years ago

he weights of bats in a zoo are normally distributed with a mean of 2.2 pounds and a standard deviation of 0.3 pounds. About wha

KonstantinChe [14]

Around 34% of all data will fall here.

6 0

3 years ago

PLEASE HELP:

Lady bird [3.3K]

Answer: (A) The image of JKL after a 90° counterclockwise about the origin is shown in figure 1. (B) The image of JKL after a reflection across the y-axis is shown in figure 2.

Explanation:

(A)

From the given figure it is noticed that the coordinate points are J(-4,1), K(-4,-2) and L(-3,-1).

If a shape rotate 90 degree counterclockwise about the origin, then,

$(x,y)\rightarrow (-y,x)$