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ollegr [7]
3 years ago
14

Work out the value of xy+y when x=-3 and y=2

Mathematics
1 answer:
CaHeK987 [17]3 years ago
7 0
First we replace the values
So xy+y becomes (-3)(2)+2
Then we multiply -3 times 2, which equals -6
-3*2=-6
Then we add 2 to -6, which equals -4
-6+2=-4

So xy+y=-4
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Mr. Powell rents a storage space that is 7 feet high, 5 feet long, and 4 feet wide.
gregori [183]

Answer: 7x5x4=140^3

140

Step-by-step explanation:

7 0
3 years ago
T is directly proportional to the cube of r. T=21.76 when r=4 Find a formula for T in terms of r
maria [59]

Answer:

T = 0.34r³

Step-by-step explanation:

Given that T is directly proportional to r³ then the equation relating them is

T = kr³ ← k is the constant of variation

To find k use the condition T = 21.76 when r = 4 , then

21.76 = k × 4³ = 64k ( divide both sides by 64 )

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3 0
3 years ago
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Vinvika [58]

Answer:

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Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Leanne multiplied 8 x 4.3 and got 32.24. Is Leanne correct?Use an area model to explain your answer
dlinn [17]

Answer:

No, not correct.  

Step-by-step explanation:

Note that 8 * 4.3 can be broken up as follows:

8 * (4 + 0.3)

and that 4*8 =32, and that 0.3(8) = 2.4 (not 0.24).

Then 8 * (4 + 0.3) becomes 32 + 2.4 = 34.4

3 0
3 years ago
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galina1969 [7]
We must know how many inches the plant grows in one month.

13 ÷ 5 = 2.6

The plant grows 2.6 inches a month.

Simply multiply 2.6 by the corresponding months to fill in the rest of the boxes.
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3 years ago
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