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3 years ago

14

Shawn evaluated the algebraic expression x divided by 4 for x = 12 and gave an answer of eight. What was his error? What is the

correct answer?

1 answer:

BigorU [14]3 years ago

5 0

X ÷ 4 = 8

Multiply each side by 4

x = 32

He subtracted 4 from 12 and got 8

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5y^2+5−4−4y^2+5y^2−4x^3 −1

vredina [299]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{4 {x}^{3} + 6 {y}^{2} }}}}}$

Step-by-step explanation:

$\sf{5 {y }^{2} + 5 - 4 - 4 {y}^{2} + 5 {y}^{2} - 4 {x}^{3} - 1}$

Collect like terms

⇒ $\sf{ 4 {x}^{3} + 5 {y}^{2} - 4 {y}^{2} + 5 {y}^{2} + 5 - 4 - 1}$

⇒ $\sf{4 {x}^{3} + {y}^{2} + 5 {y}^{2} + 5 - 4 - 1}$

⇒ $\sf{4 {x}^{3} + 6 {y}^{2} + 5 - 4 - 1}$

Calculate

⇒ $\sf{4 {x}^{3} + 6 {y}^{2} + 1 - 1}$

⇒ $\sf{4 {x}^{3} + 6 {y}^{2} }$

Hope I helped!

Best regards! :D

6 0

2 years ago

What is the value of x ? (Make sure you give the value of x !!!!)

DochEvi [55]

Answer:

The value of x is 20 degrees.

Step-by-step explanation:

The three angles of a triangle must equal 180 degrees.

100 + 40 + 2x = 140 + 2x

180 - 140 = 40 (goal)

2(x) = 40

2(20) = 40

A) 20 degrees

6 0

2 years ago

What is the approximate area of the shaded sector in the circle shown below?

viva [34]

Answer:

4.71

Step-by-step explanation:

Area of shaded sector formula: r2(data)(pi)/360

Substitute the info into the formula

$3^{2}$ (60)(pi)/360

9(60)=540

540/360(pi)=4.71

Hope this helps! :)

8 0

3 years ago

Cannon balls for an antique cannon are stacked next to it in four layers to form a square pyramid. How many cannon balls are in

labwork [276]

The amount of balls in a given layer can be found by squaring the layer it is in

4 layers
top layer (1st) is 1
2nd is 4
3rd layer is 9
4th is 16

add them up
1+4+9+16=30

30 in that pyramid

7 0

3 years ago

Simplify: 28a8+14a²<br> Enter the original expression if it cannot be<br> simplified.

Korolek [52]

Answer:

14a^2(2a^6+1)

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers