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Mars2501 [29]
3 years ago
9

Do you agree? explain why or why not

Mathematics
2 answers:
sertanlavr [38]3 years ago
7 0

Answer:

I do not agree with the student because there is no real solution.

Solving the equation only gives possible solutions, but you must check them in the original equation.

Checking the solution in the original equation shows that 4 is an extraneous solution.

castortr0y [4]3 years ago
3 0
No. when plugging 4 into the equation, 0 is not the final result. instead it is 6. 

square root of 2(4)+1 = square root of 9 = 3 

3+3 = 6
and 6 is not 0 so x cannot = 4

You might be interested in
Simplify the expression 3(x + 9) by distributing. Which expression is equivalent?
notsponge [240]

3(x+9)

3 multiply both x and 9

3x+27

hope it's helpful ❤❤❤

THANK YOU.❤

8 0
3 years ago
An engineering firm designs a custom hexagonal screw for a computer board. A sketch of the top of the screw is below. To the nea
Sphinxa [80]

The area of the screw head is 93.5m².

<h3>How to calculate the area?</h3>

The area of the hexagon can be illustrated based on the formula:

A = 3✓3/2 × a²

Base = 12.

Height = 3.

Area of each triangle = 0.5 × 12 × 3 = 18

Area of the rectangle = 12 × 6 = 72

Therefore the area of the screw head will be:

= 3√3/2 × 72

= 93.5m²

Learn more about area on:

brainly.com/question/25292087

#SPJ1

8 0
1 year ago
Make for me number 21 thx
xz_007 [3.2K]

Method One

You could divide by 5 right away.

20/5 = - 3 + x

4 = - 3 + x Add 3 to both sides.

4 + 3 = x

x = 7

Method Two.

You could remove the brackets. This is slightly longer, but some questions can only be solved that way.

20 = 5(-3) + 5x

20 = -15 + 5x Add 15 to both sides

20 + 15 = 5x

35 = 5x Divide by 5

35/5 = x

7 = x

8 0
3 years ago
-9-52 to the power of 2
Sever21 [200]
-2713

when multiplying two powers that have the same base, you can add the exponents. In this example, you can see how it works. Adding the exponents is just a short cut! The "power rule" tells us that to raise a power to a power, just multiply the exponents.
6 0
2 years ago
Will give brainliest if correct!
Stolb23 [73]

Answer:

w = 4028

Step-by-step explanation:

Solve for y

y+1 = 2015

y=2014

Substitute 2014 for y then solve for w

2\left(2014\right)^{2}+2\left(2014\right)=2015w

w=\ \frac{\left(2\left(2014\right)^{2}+2\left(2014\right)\right)}{2015}

w=4028

Therefore, w must be 4028

5 0
3 years ago
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