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Lina20 [59]
2 years ago
8

Simplify (2x2−4x+5)+(x2+3x−7)and put in standard form.

Mathematics
2 answers:
elena-s [515]2 years ago
6 0

Answer:

3x^2 - x - 2 (simplified)

3x^2 - x = 2 (standard form)

Step-by-step explanation:

Pavlova-9 [17]2 years ago
3 0

Answer:

3x^2 - x - 2

Step-by-step explanation:

<u>Step 1:  Combine like terms</u>

(2x^2- 4x + 5) + (x^2 + 3x - 7)

2x^2 - 4x + 5 + x^2 + 3x - 7

(2x^2 + x^2) + (-4x + 3x) + (5 - 7)

3x^2 - x - 2

Answer:  3x^2 - x - 2

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3 years ago
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All the boxes in a certain warehouse were arranged in stacks of 12 boxes each, with no boxes left over. After 60 additional boxe
AveGali [126]

Answer:

(1) There were fewer than 110 boxes in the warehouse before the 60 additional boxes arrived. (2) There were fewer than 120 boxes in the warehouse after the 60 additional boxes arrived.

Step-by-step explanation:

Given that all the boxes in a certain warehouse were arranged in stacks of 12 boxes each, with no boxes left over.

This implies that boxes are in multiples of 12

i.e. 12, or 24, or 36 or....

Let us say this as 12m for m an integer

Now additional boxes arrived =60

Total number of boxes now = 12m+60

This when arranged in stacks of 14,nothing left out

Or this is multiple of 14

12m+60 = 14n for some positive integer n.

By trial and error we find that if 60 is to be divided by 14, 24 should be added and 24 is a multiple of 12.

So we say originally 24 boxes were there now 84 boxes there.

Hence both options are right.

(1) There were fewer than 110 boxes in the warehouse before the 60 additional boxes arrived. (2) There were fewer than 120 boxes in the warehouse after the 60 additional boxes arrived.

3 0
3 years ago
What is y=1/2x+4 in standard form?
zhuklara [117]
<h3>Answer:  x-2y = -8</h3>

===========================================

Explanation:

Multiply both sides by 2 to clear out the fraction

y = (1/2)x+4

2y = 2[ (1/2)x + 4 ]

2y = 2*(1/2)x + 2*4

2y = x + 8

Then move the x term over to the left side

2y = x+8

2y-x = 8

-x+2y = 8

Optionally we can multiply both sides by -1

-x+2y = 8

-1*(-x+2y) = -1*8

x-2y = -8

This is in standard form Ax+By = C with A = 1, B = -2, C = -8

The reason why I multiplied both sides by -1 was to make A > 0 which is what some textbooks use as convention. Of course -x+2y = 8 is equally valid too.

8 0
3 years ago
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hodyreva [135]

Answer:

step 1. 6x2=12 first place way

step 2. 12×2=24

step 3. 24+6=30 second place way

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2 years ago
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I am Lyosha [343]

Answer:

.45

Step-by-step explanation:

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9/20 como decimal es: .45

7 0
3 years ago
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