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Fittoniya [83]
3 years ago
14

Please help, I’ll mark you as brainliest!!:)

Mathematics
2 answers:
zhuklara [117]3 years ago
7 0

Answer:

q = 6

Step-by-step explanation:

9q - 8 + 134 = 180

9q - 8 = 46

9q = 54

q = 6

faltersainse [42]3 years ago
3 0

Answer:

q=6

Step-by-step explanation:

First, subtract:

180-134= 46

Then make an equation:

9q-8=46

Add 8 to both sides:

9q=54

Then divide by 9:

q=6

Hope this helps!

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In which quadrant is point C located
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Answer:

Quadrant 4

Step-by-step explanation:

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Write an algebraic expression with the variable x that has a value of 3 when evaluated
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X=23

(x+5) - 25 = 3?

If this is what you mean.
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(help)Name the intersection of the two planes in the image below.
serg [7]

Answer:

XZ

Step-by-step explanation:

The intersection of the 2 planes is along the line XZ

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3 years ago
A geometric progression has a third term of 20 and a sum of infinity which is 3 times the first term. Find the first term ​
Anna007 [38]

Answer: the first term is 45

Step-by-step explanation:

Step 1: The formular for the nth term is ar^n-1 and since we're solving for the third term ar^3-1 = ar² which is equal to 20

So ar²= 20 and we make this equation i

Step 2: the formular for the sum of infinity is Sn = a/(1-r) and according the question the sum of infinity is equals to 3 *A ( A means the first term)

Further simplification gives us

3a= a/(1-r)

We simplify Futher by multiplying both sides by (1-r)

3a.(1-r) = a/(1-r).(1-r)

3a(1-r)=a

= 3a-3ar=a

Make 3ar the subject of the formula

3ar= 2a and lets make this equation (ii)

Step 3: From the first equation since ar²=20, let's make a the subject of the formula by dividing both sides by r²

Ar²/r² = 20/r²

A=20/r²lets make this equation (iii)

Step 4: subtitle a as 20/r² into equation (ii)

Since 3ar=2a

Then 3.(20/r²).r = 2. 20/r²

= (60/r²) .r = 40/r²

60/r = 40/r2

Multiplying both sides by r² gives us

60r = 40

Divide both sides by 20 gives us

= 3r= 2

Divide both sides by 3 gives us

= r = 2/3

Step 5: substitute r for 2/3 in equation i

ar²= 20

a. (2/3)2 = 20

= a.4/9 = 20

= 4a = 180

= a = 180/4

a = 45

5 0
3 years ago
Which number line represents the solutions to x + 4 = 2?
k0ka [10]

Answer:

A

Step-by-step explanation:

\sqrt{(x+4)^2} = 2\\(x+4)^2 = 4\\

x + 4 = ± 2

x = -2

x = -6

7 0
3 years ago
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