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Dmitry_Shevchenko [17]
3 years ago
12

Solve the given system by the substitution method. If there is no solution or an infinite number of​ solutions, so state. Use se

t notation to express solution sets.
x+3y=14
4x+5y=35
Mathematics
1 answer:
Novosadov [1.4K]3 years ago
4 0

Answer:

x=5, y=3

Step-by-step explanation:

1) x+3y=14,4x+5y=35

2) x+3y=14

3) x=-3y+14

4) 4(-3y+14)+5y=35

5) -12y+56+5y=35

6) -7y+56=35

7) -7y=-21

8) y=3

9) x=-3\times 3+14

10) x=-9+14

11) x=5

finale and last : x=5,y=3 ✅

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Which ordered pair would form a proportional relationship with the point graphed below? On a coordinate plane, a line with negat
avanturin [10]

Answer:

Answer:

(5, 20)  

Step-by-step explanation:

We can find the slope of the line

m = (y2-y1)/(x2-x1)

   = (40-0)/(10-0)

   = 40/10

   =4

Since the line goes through (0,0) the y intercept is 0

y = mx+b

y = 4x

Lets check the points  by substituting into the equation

40, 10)     10 = 4*40   10 =160  no

(–5, –10)    -10 = 4*-5    10 = -20   no

(5, 20)       20 = 4*5    20 = 20  yes

(–10, –20)    -20 = 4*-10    -20 = -40   no

Step-by-step explanation:

Which ordered pair would form a proportional relationship with the point graphed below? On a coordinate plane, a line with negative slope goes through points (negative 20, 10), (0, 0), and (20, negative 10). (10, –20) (–30, 20) (–10, 5) (35, –20)

4 0
3 years ago
Read 2 more answers
Simplify : 5y-2y+4=10​
Mnenie [13.5K]
Answer:

See below.

Step-by-step explanation:

5y - 2y + 4 = 10

5y - 2y = 6

3y = 6

y = 2

Check:

5y - 2y + 4 = 10

5(2) - 2(2) + 4 = 10

10 - 4 + 4 = 10

6 + 4 = 10

10 = 10

The value of y = 2
7 0
3 years ago
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In a sale, all prices are reduced by 25%. Work out the
Leno4ka [110]

Answer:

1650

Step-by-step explanation:

2200*.25=1650 sale price

6 0
3 years ago
Violet's mother ordered 60.5 yards of satin cloth for her boutique. If she has already used 25.42 yards of the cloth, how much c
suter [353]

Answer:

C.) 35.08 is the answer

Step-by-step explanation:

Still stuck? Get 1-on-1 help from an expert tutor now.

3 0
3 years ago
Read 2 more answers
Please help me this looks easy but I don’t understand it tho
Tems11 [23]

Let's call the unknown amount of money <em>x</em>

Betty spend 5/12 of her money (5/12)x and had 42 dollars left. Translated,

x - \frac 5{12} x = 42

Solving,

x(1 - \frac 5{12}) = 42

\frac{7}{12} x = 42

x =  \dfrac{12}{7} \cdot 42 = 72

Answer: $72

4 0
3 years ago
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