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polet [3.4K]
3 years ago
6

Solve the following systems of equations using the substitution method.

Mathematics
1 answer:
ira [324]3 years ago
8 0

Answer:

(-1,2)

Step-by-step explanation:

x = 3-2y

then

5(3-2y) + 3y = 1

15 -10y +3y = 1

14 = 7y

y = 2

then

x = 3-2(2)

x = -1

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Llana [10]
True I think cause it’s divided by 5
6 0
3 years ago
1-6. Indicate whether each table or graph represents a proportional
Pie

Answer:

Step-by-step explanation:

Proportional relationship means,

x ∝ y

x = ky

\frac{x}{y}=k where 'k' is the proportionality constant.

From table (1),

\frac{1}{5}=\frac{2}{9}\neq  \text{Constant}

Therefore, relationship is not proportional.

From table (2),

\frac{1}{6}=\frac{3}{18}=\text{constant}

True.

So the relationship will be proportional.

From table (3),

\frac{\text{hours}}{\text{Miles}}= \frac{2}{110}=\frac{5}{175}=\frac{1}{55}

Which is constant.

Therefore, relationship will be proportional.

From table (4),

\frac{\text{Hours}}{\text{Paid}}=\frac{3}{29.25}=\frac{5}{48.75}=0.103

Which is constant for every term.

Therefore, relationship will be proportional.

7 0
3 years ago
Exponential function question
PSYCHO15rus [73]

Answer:

option A

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6 0
3 years ago
Water flows at a rate of 6000 cubic inches per minute into a cylindrical tank. The tank has a diameter of 180 inches and a heigh
lawyer [7]

Answer: The height of the water in the tank is 1.178 inches

Step-by-step explanation:

Since water flows at the rate of 6000 cubic inches per minute into a cylindrical tank, then after 5 minutes, "x" cubic inches of water must have flowed into the tank. To find x:

1minute -------- 6000 cubic inches

5 minutes ------- ?

Therefore, 5/1 × 6000 = 30,000 cubic inches (this is the volume of water that must have flown into the cylindrical tank.

Since π = 22/7

Radius = diameter/2 = 180/2 = 90inches

Height of the tank = 72 inches, then applying the formula for the volume of a cylinder(π×r×r×h):

22/7 × 90×90×72

12830400/7 = 1832914.29 cubic inches (This is the natural capacity of the tank).

It if after 5 minutes and 3000 cubic inches of water have flown into the cylindrical tank, then the height of the water in the tank =

(In this case, π =22/7, r=90, h= ?)

22/7 × 90×90×h = 30,000

178200/7 = 30,000

178200h = 210000

h = 210000/178200

h = 1.178 inches

6 0
3 years ago
Need help on this please help
kupik [55]
4. 0.2618
5. 1.222
6. 5.236
8 0
3 years ago
Read 2 more answers
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