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I am Lyosha [343]
3 years ago
14

5x² + 3y when x =-2 and y = 10​

Mathematics
2 answers:
nlexa [21]3 years ago
7 0

Answer:

50

Step-by-step explanation:

5x^{2}  + 3y

x =-2\: and \:y = 10

5(-2)6^{2}+3(10)

<u>Calculate -2 to the power of 2 and get 4:-</u>

<u />5\times 4+3\times 10

<u>Multiply 5 and 4 get 20 :-</u>

<u />20+3\times 10

<u>Multiply 3 and 10 = 30:-</u>

<u />20 +30

=50

<u>OAmalOHopeO</u>

Viefleur [7K]3 years ago
5 0

Answer:

50

Step-by-step explanation:

5(-2)^2 + 3(10)

5(4) + 30

20 + 30

50

Hope this helped :D

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Amelia is using substitution to determine if 8 is a solution to the equation. Complete the statements. 6a = 42 for a = 8 First,
Tju [1.3M]

Amelia must substitute 8 for the variable using parentheses. To simplify, Amelia must multiply 8 by 6. 8 is not a solution of the equation.

<h3>What is algebraic expression?</h3>

Algebraic expression are the expression which consist the variables, coefficients of variables and constants.

The algebraic expression are used represent the general problem in the mathematical way to solve them.

Amelia is using substitution to determine if 8 is a solution to the equation.  The equation which is Amelia is solving  for a = 8 is,

6a = 42

First, Amelia must substitute 8 for the variable using parentheses as,

6(8) = 42

To simplify, Amelia must. multiply 8 by 6.

48 \neq 42

The left hand side of the eqqation is not equal to the right hand side. Thus, 8 is not a solution of the equation.

Thus, Amelia must substitute 8 for the variable using parentheses. To simplify, Amelia must multiply 8 by 6. 8 is not a solution of the equation.

Learn more about the algebraic expression here;

brainly.com/question/2164351

4 0
2 years ago
A rectangle has an area of 96 in2. The rectangle's base is 4 in. What is the height of the rectangle?
gavmur [86]
96/4=24in, so B
Hope this helps :)
6 0
3 years ago
Read 2 more answers
The diagram shows a regular hexagon and a regular pentagon.
drek231 [11]

Since a regular polygon has equal interior angles, then the measure of the angle marked x is: 132°.

<h3>What is a Regular Polygon?</h3>

A regular polygon is any n-sided polygon that has equal interior angles and equal sides.

Thus:

  • Each angle of a regular hexagon = 120°
  • Each angle of a regular pentagon = 108°

Therefore:

x = 360 - 120 - 108

x = 132°

Thus, since a regular polygon has equal interior angles, then the measure of the angle marked x is: 132°.

Learn more about regular polygon on:

brainly.com/question/1592456

6 0
2 years ago
Maths easy class 8 whoever gets it I will give u brainlist​
asambeis [7]

Answer:

424 cm²

Step-by-step explanation:

The figure is composed of a square and a trapezium on top

A of square = 18² = 324 cm²

A of trapezium = \frac{1}{2} h (b₁ + b₂ )

where h is the perpendicular height and b₁, b₂ the parallel bases

Here h = 8, b₁ = 18 and b₂ = 7 , then

A = 0.5 × 8 × (18 + 7) = 4 × 25 = 100 cm²

Area of hexagonal park = 324 + 100 = 424 cm²

8 0
3 years ago
Answer?......................
erica [24]

Answer:

22

Step-by-step explanation:

6( n^2 +2)

-----------------

n

Let n = 3

6( 3^2 +2)

-----------------

3

Parentheses first

6( 9 +2)

-----------------

3

6( 11)

-----------------

3

Top of the fraction next

66

-----

3

Divide

22

7 0
2 years ago
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