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Gre4nikov [31]
2 years ago
5

(5x2+4xy-7)+(3x2+2xy+3)

Mathematics
1 answer:
Juliette [100K]2 years ago
3 0

Answer:

8x² + 6xy - 4

Step-by-step explanation:

(5x² + 4xy - 7) + (3x² + 2xy + 3) ← remove parenthesis

= 5x² + 4xy - 7 + 3x² + 2xy + 3 ← collect like terms

= 8x² + 6xy - 4

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Last year 500 people attended a concert this year 900 people attended what was the percent increase in attendance from last year
IRISSAK [1]

Answer:

80

Step-by-step explanation:

500 to 900? = 80.

6 0
3 years ago
The figure below shows the front side of a purse in the shape of a trapezoid. Find the area of the trapezoid.
loris [4]

Answer:

  • 110 in²

Step-by-step explanation:

<u>Area of trapezoid formula:</u>

  • A = (b₁ + b₂)h/2

<u>Substitute the values on the sketch and find the area:</u>

  • A = (9 + 13)*10/2 = 110 in²
8 0
3 years ago
Evaluate the function f(x)=4x^2-10+2 find f(-7)
likoan [24]

Answer:

188

Step-by-step explanation:

f(x)=4x² - 10+2

f(-7) = 4x² - 10 + 2

= 4(-7)² - 10 + 2

= 4 (49) - 10 + 2

= 196 - 10 + 2

= 188

3 0
3 years ago
The measure of two vertical angles are 6x - 22 and 4x + 2. Find x.
maks197457 [2]
Vertical angles are congruent...they are equal....so set them equal to each other and solve for x

6x - 22 = 4x + 2
6x - 4x = 2 + 22
2x = 24
x = 24/2
x = 12 <==



6 0
3 years ago
Colby made $66.50 for mowing 7 lawns. Let x represent the number of lawns mowed and y represent the amount of money earned. Writ
Amanda [17]

Answer:

x = 9.5y

Step-by-step explanation:

7 lawns = $66.50

1 lawn = $66.50 ÷ 7

          = $9.50

You now know that for one lawn mowed, the amount of money earned is $9.50. Thus:

1x = 9.5y

x = 9.5y

6 0
3 years ago
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