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boyakko [2]
3 years ago
14

Please help i am not passing my math class i will give you the brainliest I am struggling

Mathematics
1 answer:
mash [69]3 years ago
4 0

Answer:

x=-6

Step-by-step explanation:

(8x-15)=(3x-45)

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Matthew earns $0.10 for each local newspaper he delivers twice a week. His brother earns $0.25 for delivering each Sunday newspa
kramer

Let the number of houses the boys deliver newspaper = x

Matthew delivers 2x newspapers

His brother delivers x newspapers,

Matthew earns per paper = $0.10

Matthew delivers twice a week so he earns = 0.10\times2=0.20

His brother earns per newspaper = $0.25

So, equation becomes,

0.20x+0.25x=13.95

0.45x=13.95

x=31

So, there are 31 houses where both these boys deliver newspapers.

Hence, Matthew delivers 2*31= 62 newspapers

His brother delivers 31 newspapers.

So, option A : Matthew: 62 papers; brother: 31 papers is the right option.



4 0
3 years ago
How to round 21.38 to the nearest tenth?
stealth61 [152]
The answer to that is 40
4 0
3 years ago
Please answer the question correctly and with a good explanation. Please and thank you
Angelina_Jolie [31]

Answer:

48

Step-by-step explanation:

To calculate the area of a composite shape you must divide the shape into rectangles, triangles, or other shapes you can find the area of and then add the areas back together. You may have to calculate missing lengths before finding the area of some of the shapes.

I split it into a square and a trapezoid

The area of the square is 6x5 = 30

The area of the trapezoid is

A=a+b

2h=3+6

2·4=18

So add the area together

30+18= 48

8 0
3 years ago
What are the last 2 digits of 7 to the power of 2018. This question was on a past exam paper.
Xelga [282]

Answer:

49

Step-by-step explanation:

  • Try finding pattern of last two digits of 7 to the power of some numbers.

7^1=07

7^2=49

7^3=343

7^4= 2301

7^5= 16807

  • so , the pattern is, 07,49,43,01
  • so, if we start writing all numbers from 1 to 2018 , four number in each line, 2018 will fall in the second column.
  • so it will have 49 as the  last 2 digits [by seeing this pattern : 07,49,43,01 ]
6 0
3 years ago
A diamond today cost ten dollars more than twice what it cost last year.The sum of the cost (last year and this year) is $2500.
nadya68 [22]

Answer:

The cost of the diamond last year is x = $ 830

Step-by-step explanation:

Let the cost of diamond last year = x

the cost of diamond present year = y

Given that diamond today cost ten dollars more than twice what it cost last year.

⇒ y = 2 x + 10  ------ (1)

The sum of the cost (last year and this year) is  = $ 2500

⇒ x + y = $ 2500 -------- (2)

Put the value of y in equation (2) from equation (1), we get

⇒ 2 x + 10 + x = $ 2500

⇒ 3 x = 2490

⇒ x = $ 830

& y = 2500 - 830

⇒ y = $ 1670

Therefore the cost of the diamond last year is x = $ 830

6 0
4 years ago
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