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3 years ago

Check if -2 is the solution of equation 2 – x = 4x + 3

Mathematics

2 answers:

sdas [7]3 years ago

8 0

Answer:

7x the answer i think

Step-by-step explanation:

vaieri [72.5K]3 years ago

7 0

Answer:

$\boxed {\boxed {\sf -2 \ is \ not \ a \ solution}}$

Step-by-step explanation:

We are asked to check is -2 is the solution of the following equation.

$2-x= 4x+3$

We must substitute -2 in for x and solve both sides of the equation. If the two sides are equal, then -2 is the solution.

$2- (-2) = 4(-2)+3$

Solve both sides of the equation according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

Let's start with the left side.

$2+2= 4(-2)+3 \\$

$4= 4(-2)+3$

Now solve the right side. Remember to multiply first.

$4= -8+3$

$4= -5$

$4\neq -5$

4 is not equal to -5, so -2 is not the solution for this equation.

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Please help!! Will mark brainilest, thank you in advance. :))

qaws [65]

Answer:

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Step-by-step explanation:

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3 years ago

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If 0° ≤ θ ≤ 90° and cosθ = 11/15 , what is the value of sin (90° - θ)?

igor_vitrenko [27]

$11/15=0.7333$
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first, find the numeric value for 11/15
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now you know theta, just do the sin of 90 - theta and that's it!

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3 years ago

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If 3 boxes weigh 10 pounds, how much do 4 boxes weigh?

Nataly_w [17]

Answer:

About 13.32 Pounds

Step-by-step explanation:

First. take the total weight of the three boxes and divide it by the number of boxes.

10/3 = 3.33 and so on

Now we know each box ways 3.33 pounds.

Now multiply 4 boxes by 3.33 pounds.

4 x 3.33 = 13.32

So the answer should be about 13.32 pounds.

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3 years ago

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The graph of y=x^2 was transformed to Y= -(x+3)^2 +5. Describe all transformations applied to the original function and determin

mina [271]

Hey there!

1. The graph was flipped vertically and now opens downward.

We know this because there is a negative sign in front of the equation:

$y=$ $\boxed-$ $(x+3)^2+5$

2. The graph was moved 3 units to the left.

We know this because there is 3 added to x inside of the parenthesis. Remember, inside (parenthesis) is opposite and acts on x, outside (parenthesis) is same and acts on y.

$y=-(x\boxed{+3})^2+5$

3. The graph was moved 5 units up.

We know this because there is 5 added at the end of the equation. It acts on y because it is outside of the parenthesis.

$y=-(x+3)^2\boxed{+5}$

Hope this helps!

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3 years ago

The minimum number of rigid transformations required to show that polygon ABCDE is congruent to polygon FGHIJ is 1 2 3 4 . A rot

MaRussiya [10]

I found the corresponding image. Pls. see attachment.

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A rotation translation must be used to make the two polygons coincide.

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3 years ago

Check if -2 is the solution of equation 2 – x = 4x + 3​

Check if -2 is the solution of equation 2 – x = 4x + 3