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ale4655 [162]
4 years ago
12

Helppp me pleaseeeeee

Mathematics
1 answer:
patriot [66]4 years ago
4 0

Answer is 2x because of the side click at the end

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Your chemistry textbook has 936 pages and weighs 4.2 pounds. your calculus textbook has 1368 pages and weighs 6.0 pounds. these
Zarrin [17]
Let the number of chemistry books be x and the number of calculus books be y
total number of books in each case is:
x+y=24
x=24-y.....i

Weight of each case:
2707.2/20
=135.36
thus
4.2x+6.0y=135.36..ii substituting i in ii
4.2(24-y)+6y=135.36
100.8-4.2y+6y=135.36
hence
1.8y=34.56
y=19.2
hence
x=24-19.2
x=4.8
thus the number of chemistry books was 4.8*20=96 number of calculus was
19.2*20
=384 books

4 0
3 years ago
I need help with this
Arte-miy333 [17]
Go to a quick calculator it should help

5 0
3 years ago
I need help with number 3, i’m stuck!
In-s [12.5K]
I think line P! Sorry I’m not sure.
4 0
3 years ago
Four pairs of shoes cost $80 what is the cost of seven pairs of shoes
anzhelika [568]

80 divided by 4 is 20

$20 times 7 shoes is

$140

Hope this helps!

5 0
3 years ago
Read 2 more answers
Given the figure. Find AC.
Angelina_Jolie [31]

Image is missing, so i have attached it.

Answer:

AC = 10sin 40°

Step-by-step explanation:

From the diagram attached, using terms in trigonometric ratio, AC is the opposite side, BC is the adjacent side and AB is the hypotenuse.

Thus, since we want to find AC;

We know that in trigonometric ratios; opposite/hypotenuse = sin θ

In the diagram, θ = 40° and AB = 10

Thus,

AC/10 = sin 40°

Multiply both sides by 10 to get;

AC = 10sin 40°

7 0
4 years ago
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