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aliina [53]
3 years ago
5

A. Create an algebraic expression.

Mathematics
2 answers:
NikAS [45]3 years ago
7 0

Answer:

Step-by-step explanation:

5x = 30

If there are 5 students in a row, find the number of rows given that the number of total students is 30.

Here  'x' represents the number of row

kherson [118]3 years ago
7 0

Answer:

a+b=ab

Step-by-step explanation:

a plus b is equal to ab.

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Can someone help me with this please
stellarik [79]

Ok so we'll  go ahead and solve for y first -  we just need to get it alone on one side of the equal sign

Step 1: subtract 2x from each side

2x - 7y - 2x = 19 - 2x

This cancels out the 2x on the left, giving us

-7y = 19 - 2x

Step 2: divide both sides by -7

\frac{-7y}{-7} = \frac{19}{-7} + \frac{-2x}{-7}

This gives us

y = -19/7 + 2x/7

That should be your answer for the first question. Now solving the next parts are easy. All you need to do is plug in x.

When x = -3

y = -19/7 + 2x/7

y = -19/7 + 2(-3)/7

y = -19/7 - 6/7

y = -25/7


When x = 0

y = -19/7 + 2x/7

y = -19/7 + 2(0)/7

y = -19/7


When x = 3

y = -19/7 + 2x/7

y = -19/7 + 2(3)/7

y = -19/7 + 6/7

y = -13/7


Hope that helps! Feel free to ask if I can help with anything else :)

7 0
3 years ago
Which equivalent fractions can you use to find the difference of 5 and 3/12 and 1 and 4/9
Gala2k [10]

For 5-3/12 the equivalent expression is 60/12-3/12 And then for 1-4/9 the equivalent expression 9/9-4/9

4 0
3 years ago
What is the elapesed time from 10:30pm to 12:15 am?
ehidna [41]
1 Hour and 45 minutes.
3 0
3 years ago
Read 2 more answers
The hypotenuse of a right triangle is 1m longer than twice one of the other two sides. The third side of the triangle is 15m. Fi
Dimas [21]

Let the length of unknown side be x

So, hypotenuse = 2x + 1

By pythagorean theorem ie , a² = b² + c²

(2x + 1)² = x² + 15²

4x² + 1 + 4x = x² + 225

3x² + 4x -224

(3x +28)(x-8)

x = -9.33 , 8

Since, length can't be negative

x = 8

∴Unknown side length = 8 m

Length of hypotenuse = 2 x 8 + 1 = 17 m

Hope it helps now.

4 0
3 years ago
Read 2 more answers
Evaluate g(-4) when g(b)<br> =<br> - 4(12.5b - 2)<br><br> Can someone help please?
Stolb23 [73]
The answer to your problem is 50b+8

3 0
3 years ago
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