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NISA [10]
2 years ago
5

Multi-Select Technology-Enhanced

Mathematics
1 answer:
larisa86 [58]2 years ago
8 0

Answer:

1,6

-5,9

2,3

Step-by-step explanation:

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Farmer frank owns a piece of grassland. The grass grows at a constant rate and each cow eats at a constant rate. 12 cows can eat
MrRa [10]

Answer: There are 36 cows that can eaten 72 acres of grass in 126 days.

Step-by-step explanation:

Let x be the amount of grass in an acre initially.

Let y be the amount of grass grown in an acre per day.

Since we have given that

12 cows can eat 10 acres of grass in 28 days

12×28  = 10x + 10×28 y

336 = 10x + 280 y----------------------------(1)

Similarly,

21 cows can eat 30 acres of grass in 63 days.

21×63  = 30x + 30×63 y

1323 = 30x +1890 y ---------------------------(2)

So, by graphing method, we get the value of x and y

x=\dfrac{126}{5},\ y=\dfrac{3}{10}

So, we have,  72 acres of grass in 126 days, we need to find the number of cows.

So, it becomes,

c×126 = 72x + 72×126 y

126c=72\times \dfrac{126}{5}+72\times 126\times \dfrac{3}{10}\\\\126x=4536\\\\x=\dfrac{4536}{126}\\\\x=36

Hence, there are 36 cows that can eaten 72 acres of grass in 126 days.

3 0
3 years ago
Find the exact length of the third side.
frez [133]

Step-by-step explanation:

Hello there!

Use the Pythagoream theorem:

a^{2} +b^{2} =c^{2} \\4^2+2^2=c^2\\16+4=20\\x=\sqrt{20} \\x=4.472135

:)

7 0
3 years ago
Read 2 more answers
The formula to convert °F to °C is C = (F – 32).<br><br>Convert 50°C to °F
Harman [31]

50*C x 9/5 + 32 = 122 *F


4 0
3 years ago
Read 2 more answers
Quadrilateral ABCD is located at A(-2,2), B(-2,4) and D(2,2). The quadrilateral is then transformed using the rule (x+2,y-3) to
Kay [80]
The rule is x+2, y-3 so you apply it to each of these coordinates. Right 2, down 3.
A(-2,2) -> A'(0,-1)
B(-2,4) -> B'(0, 1)
D(2,2) -> D'(4,-1)
7 0
3 years ago
A) (27+15)÷3+8(4+3-10=
irga5000 [103]

Answer:

-11, 723

Step-by-step explanation:

(27+15)/3+8(4+3-10)=-11

(90+30)*6-7*0+(10+5)/5=723

4 0
3 years ago
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