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Ainat [17]
3 years ago
14

1 Which expression is equivalent to (7x – 5) – (3x - 2)?​

Mathematics
1 answer:
Mila [183]3 years ago
8 0

Answer:

The answer is D.

Step-by-step explanation:

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easy question... if someone starts with 100$ and adds 50 each week, how much will they have after 1 year
dimulka [17.4K]

Answer:

They would have about $2500 after one year

Step-by-step explanation:

5 0
3 years ago
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The longer leg of a right triangle is 6cm longer than the shorter leg and also 1cm longer than the hyptenese. find the perimeter
CaHeK987 [17]
X - a leg  (x > 6);
x - 6 - a leg;
x + 1 - a <span>hypotenuse;</span>
Use the Pythagorean theorem
(x+1)^2=x^2+(x-6)^2

Use:(a\pm b)^2=a^2\pm2ab+b^2

x^2+2x+1=x^2+x^2-12x+36\ \ \ |-x^2-2x-1\\\\x^2-14x+35=0\ \ \ |-35\\\\x^2-14x=-35\\\\x^2-2\cdot x\cdot7=-35\ \ \ |+7^2\\\\x^2-2\cdot x\cdot7+7^2=-35+7^2\\\\(x-7)^2=14\iff x-7=\pm\sqrt{14}\ \ \ |+7\\\\x=7-\sqrt{14} < 6;\ x=7+\sqrt{14}

x=7+\sqrt{14}\\x-6=1+\sqrt{14}\\x+1=8+\sqrt{14}

The perimeter:

7+\sqrt{14}+1+\sqrt{14}+8+\sqrt{14}=16+3\sqrt{14}
5 0
3 years ago
Plz help the question is the Photo
Inga [223]
A>2.8

start at 2.8 on the number line, using the last symbol move it to the right

----------->
5 0
3 years ago
Some 7th grade math I need help pls
LekaFEV [45]

Answer:

5.20

Step-by-step explanation:

the 2nd week is -16.54

the 4th week is -21.74

if u subtract them it gives u positive 5.2

hope this helps

4 0
4 years ago
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PLSS HELP ME I DONT KNOW THIS SO PLSSS!!
vaieri [72.5K]

Answer:

Mean-6.3 (3 repeating)

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Mode-1

Step-by-step explanation:

Mean-Add all numbers together and divide by 12 (because is 12 numbers)

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3 0
3 years ago
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