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garri49 [273]
4 years ago
14

How do you check an equation

Mathematics
2 answers:
scoray [572]4 years ago
6 0
To check an equation you take the answer you got and pull it back into the equation for what you were solving for.
valina [46]4 years ago
4 0
You check by the process called substitution.

 (Well, not that that's the only process xD)

Okay, for example:

3x +  9 = 27
      -9      -9
-------------------------
3x = 18
/3      /3

x = 6.

To check if this equation is true, I gotta substitute.

3(6) + 9 = 27
18 + 9 = 27
27 = 27.

Welp that checks! If they equal to one another, then the answer is correct.

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Plz plz plz plz help me​
Basile [38]

Answer:

  • 240 plants

Step-by-step explanation:

<u>Find the area of the garden:</u>

  • A = 1/2bh
  • A = 1/2(8)(15) = 60 m²

<u>Number of plants:</u>

  • 60*4 = 240 plants
7 0
3 years ago
Read 2 more answers
WILL GIVE U BRAINLIEST ♡ Rationalize the denominator of fraction with numerator square root of -36 divided by (2-3i)+(3+2i)
Dmitriy789 [7]

Answer:

-  \frac{3}{13}  +  \frac{15i}{13}

Step-by-step explanation:

\frac{ \sqrt{ - 36} }{(2 - 3i) + (3 + 2i)}

Set up equation

Step 1: Simplify

\frac{6i}{5 - i}

Step 2:Multiply by conjugate

\frac{6i}{5 - i}  \times  \frac{5 + i}{5 + i}

Step 3:Simplify

\frac{30i + 6 {i}^{2} }{ {i}^{2} - 5 {}^{2}  }

We can reduce this and we must make the imaginary number and real number serpate equations.

-  \frac{6}{26}  +  \frac{30i}{26}

Reduce each by 2

- \frac{3}{13}  +  \frac{15i}{13}

7 0
3 years ago
How to find x and Angle ROS
Jlenok [28]
21+45+70=136
136+(2+x)=180
First subtract 136 from both sides
(2+x)=44=M<ROS
Subtract 2 from both sides
x=42
4 0
4 years ago
Read 2 more answers
HELP ASAP. Teacher didnt teach us this.
mina [271]

Answer:

A = 624

B = 14.76 or 14.8 or 15inches

Standard form in polynomial for Area = 26 x 24 = .624in^2.....

2(5 + 8) x 2( 5 + 7)

26 x 24 = 624 in^2

This is because the rectangle width indifference is 1/10th of the length measuring 2inches more, then we see both sides of the frame are equal to 2inches and match this measure for x = 2inches both width and length. We add 4 to each side 22 x 20 + 4x^2 we separate 4x^2 into 4x both sides, this has become 26 x 24 = 624in^2

as 4 was added each side.

Question 2.  

We find the width is shown left to right in rectangles, they are the sides.

So Area 4 x 24 = 96in^2

or 6.5 of the 24 = 24/6.5 = 3.69 inches

26 /6.5 = scale of 6.5: 26 = 4 inches

Therefore Area = 3.69 x 4 = 14.76

if it was square frame it would be 16inches

Go for 14.76in^2 as ithe question says 4 inches and it becomes, a replaced width only and it must be still to scale as shown above with 24/6.5 = 3.69  so 3,69 x 4 = 14.76. Last resort would be that the length as kept at 24 x 4 = 96 and in this response it does exactly what the question asks the width changes only.

5 0
3 years ago
Please help I will mark as brilliant
sweet [91]

Answer: x=2

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
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