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arsen [322]
4 years ago
7

What is 2x squared plus 5x - 9

Mathematics
1 answer:
Harlamova29_29 [7]4 years ago
7 0
It would be 7x-9 because 2x squared would be 4x, and you can only simplify two numbers if they have the same variable after it. So, all you can do is simplify this equation down to 7x-9.
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laurie is training for a race. she runs on a path that you s 1.45 miles long. she ran this path 6 times. how many miles did she
DaniilM [7]
1.45*6=8.7  // hope this helps
3 0
4 years ago
the area of ava rectangular back yard is 325 square yards.if the length of the yards is 13 yards,what is the width of the yard
Viktor [21]

It is given in the question that, The area of ava rectangular back yard is 325 square yards and the length of the yards is 13 yards.

Let the width be w yard .

And area of rectangle is the product of length and width .

So we have

325 = 13 w

Dividing both sides by w

\frac{325}{13} = \frac{13w}{13} => w = 25 yards .

So the width is 25 yards .


6 0
3 years ago
Read 2 more answers
A book publishing company is shipping an order of 300 books.the books are packaged in boxes that each can hold 24 books.how many
ryzh [129]

300/24=12 your answer would be 12


4 0
4 years ago
In a 3-digit number, the hundreds digit is one more than the ones digit and the tens digit is twice the hundreds digit. If the s
MaRussiya [10]

Answer:

The mentioned number in the exercise is:

  • <u>362</u>

Step-by-step explanation:

To obtain the mentioned number in the exercise, first you must write the equations you can obtain with it.

If:

  • x = hundredths digit
  • y = tens digit
  • z = ones digit

We can write:

  1. x = z + 1 (the hundreds digit is one more than the ones digit).
  2. y = 2x (the tens digit is twice the hundreds digit).
  3. x + y + z = 11 (the sum of the digits is 11).

Taking into account these data, we can use the third equation and replace it to obtain the number and the value of each digit:

  • x + y + z = 11
  • (z + 1) + y + z = 11 (remember x = z + 1)
  • z + 1 + y + z = 11
  • z + z +y + 1 = 11 (we just ordered the equation)
  • 2z + y + 1 = 11 (z + z = 2z)
  • 2z + y = 11 - 1 (we passed the +1 to the other side of the equality to subtract)
  • 2z + y = 10
  • 2z + (2x) = 10 (remember y = 2x)
  • 2z + 2x = 10
  • 2z + 2(z + 1) = 10 (x = z + 1 again)
  • 2z + 2z + 2 = 10
  • 4z + 2 = 10
  • 4z = 10 - 2
  • 4z = 8
  • z = 8/4
  • <u>z = 2</u>

Now, we know z (the ones digit) is 2, we can use the first equation to obtain the value of x:

  • x = z + 1
  • x = 2 + 1
  • <u>x = 3</u>

And we'll use the second equation to obtain the value of y (the tens digit):

  • y = 2x
  • y = 2(3)
  • <u>y = 6</u>

Organizing the digits, we obtain the number:

  • Number = xyz
  • <u>Number = 362</u>

As you can see, <em><u>the obtained number is 362</u></em>.

8 0
3 years ago
-10 2/7 divided by -4 4/11 I cannot seem to get this question right
kicyunya [14]

Answer:

-2 5/14

Step-by-step explanation:

7 0
4 years ago
Read 2 more answers
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