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juin [17]
3 years ago
12

3x+1y=6 2x-1y=-1 plz helpllllllllll

Mathematics
1 answer:
Gwar [14]3 years ago
4 0

Answer:

x=1 y=3

Step-by-step explanation:

3x+y=6 is the same as y=6-3x

2x-y=-1 is the same as y=2x+1

set them equal to each other

6-3x=2x+1

5x=5

x=1

substitute the value of x into either equation

y=2(1) +1

y=3

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I need help with this (picture attatched) Pleaseeeeeeeee!!!!<br>will mark brainliest!!!!!
jek_recluse [69]
38•2=76
360-76=284
284/2=142

The answer is 142
6 0
3 years ago
A baker made 60 muffins for a cafe. By noon, 45% of the muffins were sold. How many muffins were sold by noon?
hodyreva [135]

Answer:

27 muffins.

Step-by-step explanation:

We have been given that a baker made 60 muffins for a cafe. By noon, 45% of the muffins were sold.

To find the number of muffins sold by noon let us find 45% of 60.

\text{The number of muffins sold by noon}=\frac{45}{100}\times 60

\text{The number of muffins sold by noon}=0.45\times 60

\text{The number of muffins sold by noon}=27

Therefore, 27 muffins were sold by noon.

3 0
3 years ago
After sales tax, a $90 lamp costs<br> $95.40. What is the sales tax<br> percentage?
Novosadov [1.4K]

Answer:

the sales tax percentage is 6%

Step-by-step explanation:

To solve this you want to first find what percent $95.40 is of $90. Then we can subtract 100% to find the extra percent (the sales tax).

95.40 is what percent of 90?

95.40 = X · 90

Divide by 90 on both sides.

1.06 = X

So now we know that 95.40 is 106% of 90. We subtract 100% from 106% to get 6%. Therefore the sales tax percentage is 6%.

6 0
3 years ago
Freddy is driving from home to his grandfather's house, which is 174 miles away. He drives at an average rate of 58 miles per ho
Liono4ka [1.6K]
If n = number of hours and the equation is 174 + 58n then the answer is 3 hours

174 = 58n
   
     ÷  58

3  =  n
5 0
3 years ago
Read 2 more answers
Factor the trinomial below x2+14x+48
Triss [41]

Answer:

(x+8)(x+6)

Step-by-step explanation:

14=6+8

48=6*8

x^2+6x+8x+48

x(x+6)+8(x+6)

(x+8)(x+6)

7 0
3 years ago
Read 2 more answers
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