3 years ago

Need ANSWER ASAPpppp

Mathematics

2 answers:

Tatiana [17]3 years ago

4 0

The second to last statement: he needed to divide both sides of the equation by 5

Since we want to isolate a, which is multiplied to 5, we want to do the opposite which is divide by 5.

Lena [83]3 years ago

3 0

It’s the third one .......

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What is the mean of the measures of the three exterior angles of a triangle if two of the interior angles have measures of 63 an

Genrish500 [490]

Answer:

Mean score=120

Step-by-step explanation:

Areas of a triangle add upto 180degrees (63+78+x=180) 141+x= (x=180-141) x=39
Areas on a straight line add upto 180degrees

180-78=102

180-63=117

180-39=141

102+117+141=360
Mean=360/3 =120

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2 years ago

Is the given value a solution to the equation? 4(n) - 3 = -2(n) + 9 n=2

nlexa [21]

Answer:

Yes!

The solution to the equation is n = 2

Step-by-step explanation:

Given the equation

$4\left(n\right)-3=-2\left(n\right)+9$

remove the parentheses

$4n-3=-2n+9$

Add 3 to both sides

$4n-3+3=-2n+9+3$

Simplify

$4n=-2n+12$

Add 2n to both sides

$4n+2n=-2n+12+2n$

Simplify

$6n=12$

Divide both sides by 6

$\frac{6n}{6}=\frac{12}{6}$

Simplify

$n=2$

Therefore, the value of n = 2.

Hence,

Yes!

The solution to the equation is n = 2

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3 years ago

If log3⁡⁡(4y−1)=log3⁡⁡(2y+7), what is the value of y?

Slav-nsk [51]

Knowing that there are two logs on both sides of the brackets, they cancel out.
This leaves:

4y-1=2y+7 (solve for y)
4y-2y=7-1
2y=6
y=3

Hope this helped :)

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Answer:

A and c

Step-by-step explanation:

I took the test

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2 years ago