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densk [106]
2 years ago
4

4x^2+3xy+2y-5x^2+3xy+6y

Mathematics
2 answers:
Volgvan2 years ago
8 0

Answer:

- x² + 6xy + 8y

Step-by-step explanation:

assuming you wish to simplify the expression

4x² + 3xy + 2y - 5x² + 3xy +  6y ← combining like terms

= (4x² - 5x²) + (3xy + 3xy) + (2y + 6y)

=- x² + 6xy + 8y

horsena [70]2 years ago
4 0
I’m not sure but I guess 16?

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What number is 36% of 50
Rasek [7]

Answer:

72

Step-by-step explanation:

36:50*100 =

( 36*100):50 =

3600:50 = 72

3 0
3 years ago
Read 2 more answers
Plz do both of them for me and even show the work plzzzzzz
Vinvika [58]

Answer:

(a)= option 3

(b)= option 3

Step-by-step explanation:

(A) It is given that a sequence is defined by the recursive function  a_{1}=1 and a_{n}=a_{n-1}+n

Now, substituting the value of n=2 in above equation,

a_{2}=a_{1}+2

a_{2}=1+2

a_{2}=3

Again putting n=3,

a_{3}=a_{2}+3

a_{3}=3+3

a_{2}=6

Putting n=4,

a_{4}=a_{3}+4

a_{4}=6+4

a_{4}=10

Putting n=5,

a_{5}=a_{4}+5

a_{5}=10+5

a_{5}=15

Putting n=6,

a_{6}=a_{5}+6

a_{6}=15+6

a_{6}=21

Putting n=7,

a_{7}=a_{6}+7

a_{7}=21+7

a_{7}=28

Hence, option 3 is correct.

(B) The given sequence is :

5, -10, 20, -40, 80.....

Since, the given sequence is GP, therefore

a_{1}=5 and r=-2

The nth term is given by:

a_{n}=a_{1}r^{n-1}

For fifteenth term, put n=15 in above equation, we get

a_{15}=5(-2)^{14}

=5{\times}16384

=81920

Hence, the fifteenth term is 81920.

Option 3 is correct.

5 0
3 years ago
Find the perimeter of the colored part of the figure. The figure is composed of small squares with side-length 1 unit and curves
harina [27]

Answer:

16.56 in

Step-by-step explanation:

4 sides of the squares are exposed

The radius of each semicircle is 1 since they are against 2 squares.

2pi*r=circumfrence

2pi*1=6.28

6.28/2=3.14 because it's a semicircle

3.14*4=12.56 because there are 4 equal semicircles

12.56+4=16.56

4 0
3 years ago
The highway mileage m in miles per gallon for a compact car is approximated by m(s) = -0.025s^2 + 2.45s - 30, where s is the spe
Over [174]
The maximum mileage per gallon for the compact car is determined by taking the first derivative of the given equation and equate to zero. The differentiated form is m's = -0.05 s + 2.45 = 0; s is equal to 49 seconds. substituting this s, m is equal to 30.025 miles/gallon.
6 0
3 years ago
What is the basic difference between the lines y = x and y = -x? <br> (LINEAR FUNCTIONS)
kirill [66]

Answer:

y = x goes through the origin and only goes through quadrant I and III. y = -x is perpendicular to y=x and goes through the origin and quadrant II and III.

Step-by-step explanation:

5 0
3 years ago
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