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Over [174]
2 years ago
13

What is the answer to 4(2r+5)=10r

Mathematics
2 answers:
maxonik [38]2 years ago
8 0

Answer:

8r+20=10r

20=2r

10=r

Hope this helped

vladimir2022 [97]2 years ago
4 0

Answer:

\boxed{\sf r=10}

<h3><u>Step-by-step explanation:</u></h3>

\sf 4(2r+5)=10r

Expand: Use the Distributive Property to multiply 4 by 2r+5:

\longmapsto\sf 8r+20=10r

Subtract 20 from both sides:

\longmapsto\sf 8r+20-20=10r-20

\longmapsto\sf 8r=10r-20

Subtract 10r from both sides:

\longmapsto\sf 8r-10r=10r-20-10r

\longmapsto\sf -2r=-20

Divide both sides by -2:

\longmapsto\sf \cfrac{-2r}{-2}=\cfrac{-20}{-2}

\longmapsto\sf r=10

______________________________________

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2 years ago
Find the 23rd term of this sequence -25,-15,-5,5....
notsponge [240]

Answer:

195

Step-by-step explanation:

To find the 23rd term of this sequence, we can use the arithmetic sequence formula a_{n} =a_{1} +(n-1)d where,

a_{n} = n^{th} term

a_{1} = first term

n = term position

d = common difference

a_{23}=-25+(23-1)10

a_{23} =195

8 0
3 years ago
For what value of x is line a parallel to line b?<br><br> (Yo, please help me so I can go to sleep.)
iogann1982 [59]
X=20

If they're parallel the other number in the same spot as 5x+15 equals that, so 5x+15=115 because if they are parallel they're the same if same spot and same line going through them.

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5x=100
Divide by 5 both sides
X=20

If x=20 then these lines would be parallel
6 0
3 years ago
Find the missing number: 70, 102, ?, 178, 222
irakobra [83]

Answer:

138

Step-by-step explanation:

70 + 32 = 102

102 + 36 = 138

138 + 40 = 178

178 + 44 = 222

4 0
3 years ago
I will mark u brainalist
melisa1 [442]

Answer:

1) Positive

2) Undefined

3) Negative

4) Zero

<h2><u>Hope This Helped!</u></h2>

3 0
2 years ago
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