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ArbitrLikvidat [17]
3 years ago
14

Solve the equation -5x+31+3x=3

Mathematics
1 answer:
Rus_ich [418]3 years ago
3 0

Answer:

Step-by-step explanation:

-5x+31+3x=3

move everthing to one side

-5+31+3x-3=0

add and subtract common terms

-2x+28=0

divide across by common denominator

-x+14=0

Solve for x

x=14

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If r=7 and S=10, find R. Round answer to the nearest tenth.
ivolga24 [154]
I believe the answer is 35 degrees, or A.
8 0
3 years ago
Read 2 more answers
2. How many terms are there in the expression: 3a + 6
Aliun [14]

Answer: 2

Step-by-step explanation: That expression is a binomial in any case the terms in a polynomial are separated by a plus or minus sign (+,-) so you can determine the number of terms by counting how many number or variable are being separated (ex: 3a+a-1 would have 3 terms and be a trinomial)

8 0
3 years ago
Factor each expression.<br><br> (9) 5a - 25<br><br> (10) 28 - 7x<br><br> (11) 12z + 28 - 7z - 3
Nimfa-mama [501]

Answer:

Step-by-step explanation:

Look for the GCF and then divide every term by the GCF to see what remains

(9) 5a - 25  ( GCF is 5 so take out 5 and divide every term by 5)

     5(a-5)

(10) 28 - 7x     ( GCF is 7 so take out 7 and divide every term by 7)

     7(4-x)

(11) 12z + 28 - 7z - 3=  (combine terms) =

       5x+25( GCF is 5 so take out 5 and divide every term by 5)

        5(x+5)

6 0
2 years ago
A cylinder with a radius of 1 cm and a height of 21 cm has the same volume as a cone with a height of 7 cm. What is the radius o
Maru [420]
Volume of the cylinder = πr²h = π(1)² (21) = 21π cm³

Volume of the cone = 1/3 π r² h

21π = 1/3 π (r)² (7)

r³ = 21π ÷ (7/3 π) 

r² = 9

r = 3

Answer : Radius = 3
3 0
3 years ago
1) An average soccer ball has a mass of .4 kg. If a soccer ball is kicked with a force of 750 Newtons, what is the acceleration
tangare [24]

Answer:

<u>1) 187.5ms^2</u>

<u>1) 187.5ms^22) 307.5m</u>

Step-by-step explanation:

1) You can use the formula:

Force = Mass x Acceleration

750 = 4 x a

750 = 4a

750/4 = a

<u>187.5ms^2</u>

2)

For every one second it travels 12.3 meters therefore you can just do 12.3x25 = 307.5m

8 0
3 years ago
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