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3 years ago

12=24-ysolve each equation mentally

Mathematics

2 answers:

viva [34]3 years ago

7 0

Answer:

y=12

Step-by-step explanation:

Move y to the left side so it's positive and move 12 to the right:

y=24-12

y=12

It's very simple and you can do it in your head easily.

Lerok [7]3 years ago

4 0

Answer:

y=12

Step-by-step explanation:

12=24-y

-24 -24

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

-12=-y

12=y

If y were a number you would have to find a number to make this equation true. 12 is the correct answer.

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The length of a rectangle is five times it’s width if the area of the rectangle is 320m^2 find its perimeter

BlackZzzverrR [31]

Answer:

Perimeter of the rectangle = 96 meters.

Step-by-step explanation:

Let the width of the rectangle = K

So, the length of the rectangle = 5K

Area = 320 sq meters

Now, Area of a Rectangle = Length x Width

⇒ 320 = K x 5K

or, $5K^{2} = 320\\or, K^{2} = \frac{320}{5} = 64$

So, the vlue of K = 8 or, K = -8

But as K represents a length hence, K ≠ -8

So, the <u>width of the rectangle = 8 meters</u>

and the<u> length of the rectangle = 8 x 5 = 40 meters</u>

Now, Perimeter = 2(length + width)

= 2(8 + 40) = 96 meters.

So, the perimeter of the rectangle = 96 meters.

6 0

3 years ago

Write a two-column proof. Given: line BD bisects angle CBE. Prove: angle ABD approximately equal to angle FBD.

ale4655 [162]

Answer:

The proof is derived from the summarily following equations;

∠FBE + ∠EBD = ∠CBA + ∠CBD

∠FBE + ∠EBD = ∠FBD

∠CBA + ∠CBD = ∠ABD

Therefore;

∠ABD ≅ ∠FBD

Step-by-step explanation:

The two column proof is given as follows;

Statement ${}$ Reason

$\underset{BD}{\rightarrow}$ bisects ∠CBE ${}$ Given

Therefore;

∠EBD ≅ ∠CBD ${}$ Definition of angle bisector

∠FBE ≅ ∠CBA ${}$ Vertically opposite angles are congruent

Therefore, we have;

∠FBE + ∠EBD = ∠CBA + ∠CBD ${}$ Transitive property

∠FBE + ∠EBD = ∠FBD ${}$ Angle addition postulate

∠CBA + ∠CBD = ∠ABD ${}$ Angle addition postulate

Therefore;

∠ABD ≅ ∠FBD ${}$ Transitive property.

3 0

3 years ago

What constant term is necessary to complete the perfect square trinomial pictured in the algebra tiles?

gayaneshka [121]

The algebra tiles show two equal factors. They are (x + 4).

Then, the perfect square is the product of the two equal factors, (x + 4) * (x +4).

That is (x + 4)^2.

Then develop that perfect square to find the constant term.

(x + 4)^2 = x^2 + 8x + 16.

That means that the constant term needed to complete the trinomial is 16.

Answer: 16

3 0

3 years ago

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1b. $1 6− 1 3 Lin said the value of this expression is $ 1 6. Is she correct? Explain or show your reasoning to prove your an

Brrunno [24]

Answer:

No she is not correct

Step-by-step explanation:

She is not correct because “value of expressions” mean the result which for this it is 16-13 =3 and she is wrong. please mark me brainly! Hope this helps! :D

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3 years ago

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Trava [24]

Answer:

I believe it's B!

Step-by-step explanation:

Not sure!!

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3 years ago

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12=24-ysolve each equation mentally​

12=24-ysolve each equation mentally