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dalvyx [7]
2 years ago
8

Please help, and plz don't be saying this is the right answer if u dont know for sure.

Mathematics
1 answer:
zepelin [54]2 years ago
4 0

Answer:

135 degrees

Step-by-step explanation:

(8x-7)+(12x+57)=180

combine like terms

20x+50 = 180

subtract 50 on both sides

20x = 130

divide by 20

x = 130/20

x = 13/2

x = 6.5

cpq = 12x+57

cpq = 78 + 57

cpq = 135

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Shellie spent $10.56 on oranges that cost $0.88 per orange. How many oranges did she purchase?
vlada-n [284]
You have to do 10.56 plus 88 and you will have your answer
6 0
3 years ago
Ann, Chang, and Kareem sent a total of
Gnoma [55]

It is given in the question that

Ann, Chang, and Kareem sent a total of 89 text messages over their cell phones during the weekend. Ann sent 9 fewer messages than Chang. Kareem sent 3 times as many messages as Ann.

Let number of messages Chang sent be x. And Ann sent 9 fewer than Chang, so Ann sent (x-9) messages. And Kareem sent 3 times as many messages as Ann, so Kareem sent 3(x-9) messages.

And the total messages are 89. That is

x+x-9+3(x-9)=89

Combining like terms

x + x - 9 + 3x-27 =89
\\
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5x = 125
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So Chang sent 25 messages, Ann sent

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And Kareem sent

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8 0
3 years ago
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gtnhenbr [62]

Step-by-step explanation:

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4 0
2 years ago
20 POINTS!!! PLEASE HELP
Vedmedyk [2.9K]
360=x+x+(2x+3)+(2x+3)
we have 360=2x+2x+2x+6
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6 0
2 years ago
Read 2 more answers
The equation of liner is y = -x - 6. Line s includes the point (-1, -3) and is parallel to line
Reptile [31]

Answer:

90 hardcover books

Step-by-step explanation:

We can solve this by setting up a couple of equations.

Let's allow x to represent the number of paperbacks Tim owns, and allow y to represent the number of hardcover books he owns.

Using the information in the question, we can write the equations:

1)x = 4y-3

2) x+y=447

Let's rearrange equation 1 so that it is in standard form:

x-4y=-3

And then let's multiply equation 2 by 4 so that we can cancel out y when we solve the system of equations:

4(x+y=447)

4x+4y=1,788

Then we can add the two equations and solve for x:

  1) x-4y=-3

+ 2)4x+4y=1,788

------------------------------------

5x=1,785

x=357

So now we now the number of paperback books Tim has is 357. Let's plug this into one of the original equations to solve for the number of hardcover books (y):

357+y=447

y=90

And now we know that Tim owns 90 hardcover books.

4 0
2 years ago
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