1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vsevolod [243]
3 years ago
6

the total cost of 8 pens and 9 books is $30.05. if the cost of a pen is $a, and a book is .90 MORE expensive. find A. Give your

answer in two decimal places.
Mathematics
2 answers:
AysviL [449]3 years ago
5 0

Answer:

2 Answers By Expert Tutors ... Let's set x = cost of books and y = cost of pens. ... In algebra, this can be written as x + y = 18. ... Using x and y, we get 1 book and 2 pens costs $21, or x + 2y = 21 ... The pen must cost $3 because we are adding $3 to the total when we ... Please provide a valid phone number.

Step-by-step explanation:

Kazeer [188]3 years ago
4 0
A= 2.74375 or just 3
Books= $8.10
Pens= 3 or 2.7475
You might be interested in
He can run 20 km in 95 minutes. He wants to know how many kilometers he will go if he runs at the same pace for 285 minutes.
DIA [1.3K]

Answer:

60km

Step-by-step explanation:

In 95 mins,he can run is 20km

In 1 min,he can run is 20/95

= 4/19in lowest

Now,

In 285 mins,he can run is=4/19*285

=4*15 in lowest

=60 km

3 0
3 years ago
Please answer and thank you
Aleksandr [31]
5.945 is the answer, can i get brainliest
5 0
3 years ago
Read 2 more answers
Sue’s height is 3 inches less than Ed’s height. Ed is 56 inches tall. How tall is Sue? Write an equation to represent the situat
belka [17]

Answer:

S = E - 3

Sue is 53 inches tall.

Step-by-step explanation:

Let Sue's age be represented by S and Ed's by E

Equation:

S = E - 3

E = 56 inches

S = 56 - 3 = 53 inches

5 0
3 years ago
Solve the equation: X to the 4th power - 81=0
Musya8 [376]
x^4-81=0\\
x^4=81\\
x^4=3^4 \vee x^4=(-3)^4\\x=3 \vee x=-3
5 0
4 years ago
Can someone help me do this
SCORPION-xisa [38]

Answer:

6

Step-by-step explanation:

Find the missing angle:

180⁰ - 82⁰ = 98⁰

Find the sum of the angles given without the missing angle:

180⁰ - 98⁰ = 82⁰

The sum of both the angles is 82⁰

Write an equation:

5x + 8 + 6x + 8 = 82⁰

Collect the like terms together

11x + 16⁰ = 82⁰

Subtract 16⁰ from both sides

11x = 66⁰

Divide by 11 on both sides

x = 6⁰

8 0
3 years ago
Other questions:
  • What are they?! Plz help!!!
    8·1 answer
  • Question 5 of 24
    14·1 answer
  • Helppppp plsss solve for x
    5·2 answers
  • jill is thinking of two numbers. they have the sum of 27 and a difference of 7. what are the two numbers?
    10·2 answers
  • Find the gcf of 40 and 48
    13·2 answers
  • Jill wants to find the quotient use multiplication and distributive property to help Jill find the quotient of 144 divided by 8
    9·2 answers
  • Points P. Q. and S are on a circle. The measure of arc PQ is 58°<br>What is the measure of arc PSQ?​
    13·1 answer
  • Giving brainliest for whoever answer this correctly 10 points!!!
    7·1 answer
  • Please can you help?
    9·2 answers
  • There are 1,570 souvenir paperweights that need to be packed in boxes. Each box will hold 17 paperweights. How many boxes will b
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!