3 years ago

Simplify equation: 6x2+7x−3x2−2x

Mathematics

1 answer:

tigry1 [53]3 years ago

5 0

Answer:

8x+4

Step-by-step explanation:

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Roman55 [17]

Answer:

See below, please

Step-by-step explanation:

The right：

${(y + c)}^{2} - b \times (x + a) \\ = ( {y}^{2} + 2yc + {c}^{2} ) - bx - ba =$

$= {y}^{2} - bx + 2cy + {c}^{2} - ab$

The left:

$= {y}^{2} - 7x - 18y + 109$

So, after comparing the right side and the left side of this equation, we know

$b = 7$

$2c = - 18 \\ so \\ c = - 9$

${c}^{2} - ab = 109$

So,

$a = \frac{ {c}^{2} - 109}{b} = \frac{ { (- 9)}^{2} - 109}{7} = \frac{ - 28}{7} = - 4$

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3 years ago

A SCHOOL IS PLANNING A FIELD TRIP. THERE ARE A TOTAL OF 611 STUDENTS AND 91 SEATS ON EACH BUS. HOW MANY BUSES ARE NEEDED TO TAKE

algol [13]

Answer:

About 7 buses.

Step-by-step explanation:

What you do is you will divide 611 by 91 to find your answer.

611/91=6.714

You will round up because the 7 is greater than 5.

About 7 buses.

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3 years ago

#1: Simplify the expression below. Type your answer as an integer. 7 + 1 - 18 : 6

myrzilka [38]

Answer:

Step-by-step explanation:

Steps of calculation:

7 + 1 - 18 : 6 =
7 + 1 - 3 =
8 - 3 =
5

Answer is 5

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3 years ago

Orlando is measuring the angles of a triangle. He measures the first two angles and gets 30° and 70°. What should be the measure

Andrei [34K]

The answer will be B because all three angles of the triangles add up to180 degrees, and we already know the total of two other angles are 100 degrees, which made the unknown angles have 80 degrees. Hope it help!

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Citrus2011 [14]

Answer:

Ok. What is the question?

Step-by-step explanation:

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3 years ago