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2 years ago

I need help with my math I'm doing solving equations using addition and subtraction

Mathematics

2 answers:

Katen [24]2 years ago

8 0

It would be 4 because, on the right, it has 3 and 4. That is 7 and if you look at the scale it's balanced which means it would be the same on that side but it already has 3 so 4. So hold up your fingers and take 4 fingers up and add 3 fingers to that 4. How many is that? Count them all up and you'll get 7!

Flura [38]2 years ago

3 0

N+3=7. To find n, you need to have it by itself, so you can do that by subtracting 3 on both sides, so it would look like: n+3-3=7-3. Then you have n=4.

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PLEASE HURRY 50 POINTS Answer Both parts and I will reward Brainliest

vlabodo [156]

We have:

$a_1=-3$

and:

$r=4$

so:

$$\sum\limits_{n=2}^5\,-3\cdot4^{n-1}=\sum\limits_{n=1}^5\,-3\cdot4^{n-1}-a_1=S_5-a_1=\frac{-3-(-3)\cdot 4^5}{1-4}-(-3)=$

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It is a finite sum, so it is convergent.

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2 years ago

2. Is 4x – 3 = 19 true, false, or open? <br> A)true<br> B)false<br> C)open

ElenaW [278]

Answer: B. False

Step-by-step explanation: Because you do

4x - 3 = 19

+3 +3 =4x = 22

You divide 4x divide by 4 and you get x

Then you divide 22 by 4 and get 5.5

So the answer is X = 5.5

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2 years ago

The thickness of a part is to have an upper specification of 0.925 and a lower specification of 0.870 mm. the average of the pro

SVETLANKA909090 [29]

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3 years ago

What is the algebraic expression for the quotient of z and 3

Zielflug [23.3K]

The quotient of z and 3.

quotient = ÷

z/3

The answer is A.

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3 years ago

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slava [35]

Answer:

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30 minutes

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2 years ago