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zhannawk [14.2K]
3 years ago
15

Five books and four pens cost $800. One book costs $120. How much does one pen cost?

Mathematics
1 answer:
cestrela7 [59]3 years ago
3 0
The cost of each pen is $50, because you spend $600 on books leaving $200 to buy FOUR pens, making it $50 per pen
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Can someone solve these please using the formula AB | a - b |<br><br> And can you show work
Lana71 [14]

Answer: 1) AC = 13

The formua does not actually apply to all of the problems.

Step-by-step explanation:

1) The absolute value of -8 is added to the absolute value of 5. 8+5=13

2) Subtract the length of the EF from EG to get the length of FG 21 -6 = 15

3) Take what's given and create an equation to solve. 4x + 15 +39 =110. 4x = 110 - (15+39).

4x =110-54. 4x =56. x=56/4. x=14

4) Create another equation. You have two segments that add up to the length of EG, given =23

EF+FG=EG

(2x-12)+(3x-15)=23

5x - 27 = 23

5x= 23+27 5x =50. x = 10

Substitute 10 for x

EF=2(10) -12 EF=8

FG=3(10)-15. FG=15

EF+FG =EG.

8 + 15 = 23

5) 2/5 of 25 is 10 So EF is 10. Subtract from 25 to get FG

FG = 15

I hope this helps you.

4 0
3 years ago
How do i show proof?​
Alexus [3.1K]

Answer:

Step-by-step explanation:

If m is parallel to p then the angles 1 and 8 are =. If 8 and 2 are = (as said in the paper), then a and b are parallel

8 0
3 years ago
Ateacher uses 36 centimeters of tape to hang up 9 student projects. At that rate
Troyanec [42]

The teacher would need 40 centimeters of tape to hang 10 student projects.

Step-by-step explanation:

Given,

Tape used to hang projects = 36 centimeters

Number of projects hanged = 9

We will find unit rate;

9 projects = 36 centimeters

1 project = \frac{36}{9}\ centimeters

1 project = 4 centimeters

Therefore,

Tape needed to hang 10 projects = 4*10 = 40 centimeters

The teacher would need 40 centimeters of tape to hang 10 student projects.

Keywords: unit rate, multiplication

Learn more about unit rate at:

  • brainly.com/question/11203617
  • brainly.com/question/11253316

#LearnwithBrainly

3 0
3 years ago
Helppp cuz I need it??
bazaltina [42]
They sold 17 bags because you have to divide the total(127.50) by the price(7.50). So the equation is 127.50/7.50=17
8 0
3 years ago
Read 2 more answers
From 4 p.m. to 5:30 p.m., Carolos, Lisa and Toni took turns playing the same computer game. Carolos played for 1/2 hour, and Lis
kkurt [141]

Hi!

From 4 p.m to 5:30 p.m. there is hour and a half, or 90 minutes.

Carolos played for 1/2 hour = 30 minutes.

Lisa played for 3/4 hour = 45 minutes.

Toni played = 90 - 45 - 30 = 15 minutes.

Hope this helps!

7 0
4 years ago
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