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labwork [276]
3 years ago
5

Which expression is equivalent to 3 + 4y – y(9 – 2y) + 5?

Mathematics
2 answers:
spin [16.1K]3 years ago
8 0

Answer:

C.


Step-by-step explanation:

Because the expression simplified is 2y^3-5y+8, so the answer is C.

Hope this helps! :)

~Angel


anygoal [31]3 years ago
8 0

Answer:

The expression 3 + 4y – y(9 – 2y) + 5 is equivalent to 2y² -5y + 8  .

Option (B) is correct .

Step-by-step explanation:

As the expression given in the question be

=  3 + 4y – y(9 – 2y) + 5

First open the bracket

=  3 + 4y – 9y +2y² + 5

= 2y² -5y + 8

Therefore the expression 3 + 4y – y(9 – 2y) + 5 is equivalent to 2y² -5y + 8  .

Option (B) is correct .

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Area of triangle where A=50, b=31, c=18
Mrac [35]
Use Heron's Formula:
s means semi-perimeter = (50 + 31 + 18) / 2 = 99 / 2 =
49.5
area = sq root [(s * (s-a) * (s-b) * (s-c)]
area = sq root [(49.5 * (s-a) * (s-b) * (s-c)]

This will NOT form a triangle.  The longest side (50) is greater than the sum of the other 2 sides.

Source:
http://www.1728.org/trianinq.htm

 


5 0
4 years ago
12x-9y=36<br> X-intercept is<br> Y- intercept is
n200080 [17]

Answer:

x-int is 3

y-int is -4

Step-by-step explanation:

when x is zero, -9y = 36

y = -4

when y = zero 12x = 36

x = 3

7 0
3 years ago
Find the measures of the angle QUESTION A.
gizmo_the_mogwai [7]

Answer:

145°

Step-by-step explanation:

x°+70°=(2x-5)°

x°+70°=2x°-5°

70°+5°=2x°-x°

75°=x°

x=75

JKM=(2x-5)°

=(2x75-5)°

=(150-5)°

=145°

6 0
3 years ago
-30=5(x+1)−30=5(x+1) proszę szybką odpowiedź :)
den301095 [7]

Answer:

x = -7

Step-by-step explanation:

The given equation is :

-30=5(x+1)

We need to solve the equation.

Use associative property on RHS.

-30 = 5x+5

Subtract 5 from both the sides.

-30-5 = 5x+5-5

-35 = 5x

x = -7

Hence, the value of x is -7.

7 0
3 years ago
The lawn is a circle with radius 3m.<br> Work out the area of the lawn.
Umnica [9.8K]

Answer:

28.27m

Step-by-step explanation:

the formula for area of a circle is

A= π x r^2

A = π x r^2 = π x 3^2 = 28.27433

5 0
2 years ago
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