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2 years ago

7x - 3= -3 + 7x Can someone explain

Mathematics

2 answers:

labwork [276]2 years ago

8 0

Subtract 7x on both sides of the equal sign (it'll cancel out) then -3=-3 which makes a true statement.

Paladinen [302]2 years ago

5 0

Answer: Solve for x

Any value of x makes the equation true.

All real numbers

Interval Notation:

(−∞,∞)

Step-by-step explanation:

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Answer:

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2 years ago

A and B are complementary angles. If m_A = (6x + 29) and m

Liono4ka [1.6K]

Answer:

m∠ $A=77$ °

Step-by-step explanation:

Complementary angles are a pair of angles whose measures have a sum of $90$ °. Since m∠ $A$ = $6x+29$ and m∠ $B$ = $x+5$ , we can write the following equation to solve for $x$ :

$6x+29+x+5=90$

Solving for $x$ , we get:

$6x+29+x+5=90$

$7x+34=90$ (Simplify LHS)

$7x+34-34=90-34$ (Subtract $34$ from both sides of the equation to isolate $x$ )

$7x=56$ (Simplify)

$\frac{7x}{7}=\frac{56}{7}$ (Divide both sides of the equation by $7$ to get rid of $x$ 's coefficient)

$x=8$

Therefore, m∠ $A=6x+29=6(8)+29=48+29=77$ °. Hope this helps!

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2 years ago

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Find sin A. <br> Please select the best answer from the choices provided

Phantasy [73]

A key word to remember when doing this type of math is "SOHCAHTOA".

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Cosine =

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Tangent =

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Since this is a 3, 4, 5 triangle, with the sides just multiplied by 7, the opposite of A which is 28 would be simplified to 4.

And the Hypotenuse would be simplified to 5.

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