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klemol [59]
3 years ago
5

You buy 3 books that each cost the same amount and a magazine all for 55.99. You know that the magazine costs 1.99. How much doe

s each book cost
Mathematics
1 answer:
kenny6666 [7]3 years ago
7 0
Each of the three books costs $18
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I'm unsure how to solve this, if you can please respond asap. Thanks!
Alinara [238K]

Answer:

82.5°

Step-by-step explanation:

This is the case of a isosceles triangle , as you may know in a isosceles triangle , there are two sides of equal length as well as two equal angles.

You know that the sum of angles in a triangle is 180°, therefore it comes to this equation :

15° + 2x = 180°

2x = 165°

x = 82.5°

therefore 82.5° is the correct answer.

4 0
3 years ago
Find a pair of numbers that is a member of both x=1+1y and x=36-4y
ycow [4]

Answer:

y=7, x=8

Step-by-step explanation:


5 0
2 years ago
The management of Acrosonic plans to market the ElectroStat, an electrostatic speaker system. The marketing department has deter
crimeas [40]

Answer:

(a)R(x)=-0.02x^2+610x

(b)R'(x)=-0.04x+610

(c)R'(5400)=$394

Step-by-step explanation:

Given that x is the quantity demanded and the speaker's unit price (in dollars) is p where:

p = −0.02x + 610 (0 ≤ x ≤ 20,000)

(a)Revenue function R.

Revenue = Price X Quantity Demanded

Therefore:

R(x)=xp

=x(-0.02x + 610)\\R(x)=-0.02x^2+610x

(b)Marginal revenue function R'(x)

If R(x)=-0.02x^2+610x

Then, the marginal revenue function

R'(x)=-0.04x+610

(c)We want to compute R'(5,400)

R'(5400)=-0.04(5400)+610\\R'(5400)=394

From the above, we can infer that the revenue that will be generated on the sales of the 5401st item is $394.

5 0
3 years ago
A bracelet that regularly sells for $44 is on sale for 25% off. Find the sale price of the bracelet?
Vsevolod [243]
Regular price : $44

Discount : 25%

So, discount amount : 25% of 44
= 25/100 × 44
= $11

So, amount after applying discount = $44 - $11 = $33
8 0
3 years ago
3,969 + b^2 = 11,025
ludmilkaskok [199]

Answer:

b=84

Step-by-step explanation:

from your equation, subtract 3969 from each side

you are left with b^2=7056

sqrt b^2 = sqrt 7056

b=84

7 0
3 years ago
Read 2 more answers
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