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jekas [21]
3 years ago
8

Solve this equation 13(y+7)=3(y−1)

Mathematics
2 answers:
mihalych1998 [28]3 years ago
7 0

Answer:

y=-9.4

Step-by-step explanation:

We will have to start solving by dealing with the bracket

13(y+7)=3(y-1)

Ok let's get to work

13y+91=3y-3

Let's collect like terms

13y-3y=-3-91

10y=-94

Let's make y the subject of formula by dividing both sides by 10

y=-9.4

Therefore the final answer is-9.4

Hope you understand how we got our final answer

Alchen [17]3 years ago
6 0
13(y+7)=3(y-1)
13y+91=3y-3
13y-3y=-91-3
10y=-94
-94/10
Y=-9.4
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If a photocopier makes copies in 1/3 s, then at the same rate, how many copies does it make in 4 minutes?
irina1246 [14]

Answer:

80 copies

Step-by-step explanation:

4 minutes= 240 seconds. So I did 240 seconds divided by 3 seconds (one copy is made in that time) then you get 80. I don't know if that explanation make sense but the math checks out.

3 0
2 years ago
URGENT!!!!!!!! PLEASE HELP ASAP TIMED!!!!!!!!!!!!!!! HELP!!!!!!!!!!!!!!!!!
rodikova [14]

Answer:

x = 18 and y = 6√10

Step-by-step explanation:

First using pythagoras theorem on the small triangle

h² = 6² + 2²

h² = 36 + 4

h² = 40

h= √40

h = √4 * 10

h = 2√10

Using the similarity theorem;

y/2√10 = 6/2

y/√10 = 6

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To get x we will use the pythagoras theorem

y² = x²+6²

(6√10)² = x² + 36

360 = x² + 36

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5 0
2 years ago
Distribute 2 (9x^2 + 3).
beks73 [17]

Answer:

18x^2+6

Step-by-step explanation:

2(9x^2+3)

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2 years ago
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astraxan [27]
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Step-by-step explanation:

4 0
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