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enyata [817]
3 years ago
10

Will give you brainlyist if the ansers right PLS HELP

Mathematics
1 answer:
pochemuha3 years ago
5 0
Let’s find option A first:

65-15=50

Next, option B

100%-20%=80%

65(0.8)=52

So, option A is cheaper by $2
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How many terms are in this expression 9a + 6b + 3c + 1
satela [25.4K]

Answer:

3

Step-by-step explanation:

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2 years ago
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Solve by elimination <br> -5x+8y=-27<br> -8x+7y=-20
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Answer:

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Step-by-step explanation by elimination:

Solve the following system:

{8 y - 5 x = -27 | (equation 1)

7 y - 8 x = -20 | (equation 2)

Swap equation 1 with equation 2:

{-(8 x) + 7 y = -20 | (equation 1)

-(5 x) + 8 y = -27 | (equation 2)

Subtract 5/8 × (equation 1) from equation 2:

{-(8 x) + 7 y = -20 | (equation 1)

0 x+(29 y)/8 = (-29)/2 | (equation 2)

Multiply equation 2 by 8/29:

{-(8 x) + 7 y = -20 | (equation 1)

0 x+y = -4 | (equation 2)

Subtract 7 × (equation 2) from equation 1:

{-(8 x)+0 y = 8 | (equation 1)

0 x+y = -4 | (equation 2)

Divide equation 1 by -8:

{x+0 y = -1 | (equation 1)

0 x+y = -4 | (equation 2)

Collect results:

Answer:  {x = -1 , y = -4

7 0
3 years ago
The angle marked a = 79°.<br> Work out the value of x.<br><br> The diagram is not drawn accurately.
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Answer:

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Step-by-step explanation

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Step-by-step explanation:

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Please solve quickly for 50 points
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B: 27cm
C: 30,000cm

Hope this helps!
8 0
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