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Darya [45]
3 years ago
7

Pls help me with this question

Mathematics
1 answer:
ankoles [38]3 years ago
8 0

Answer:

I'm not sure the answer to this

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0.2(x+50)-6=0.4(3x+20)
podryga [215]
Distrivute 0.2 to x and +50 and you get 0.2x+10-6  now for the other side we do the same and we get 1.2x+8 or an easier way...  Let's solve your equation step-by-step.<span><span><span>0.2<span>(<span>x+50</span>)</span></span>−6</span>=<span>0.4<span>(<span><span>3x</span>+20</span>)</span></span></span>Step 1: Simplify both sides of the equation.<span><span><span>0.2x</span>+4</span>=<span><span>1.2x</span>+8</span></span>Step 2: Subtract 1.2x from both sides.<span><span><span><span>0.2x</span>+4</span>−<span>1.2x</span></span>=<span><span><span>1.2x</span>+8</span>−<span>1.2x</span></span></span><span><span><span>−x</span>+4</span>=8</span>Step 3: Subtract 4 from both sides.<span><span><span><span>−x</span>+4</span>−4</span>=<span>8−4                </span></span><span><span>−x</span>=<span>4  now you divide by negative x (technically it is -1x=4 so your answer is x=-4</span></span>
3 0
3 years ago
One number is 2 less than a second number. Twice the second number is 17 less than 5 times the first
gulaghasi [49]
X=y-2
2y=5x-17
Substituting for x into the second equation, we find
2y=5(y-2)-17
2y=5y-10-17
-3y=-27
y=9
So x=7
Thus, the two numbers are 7 and 9.
4 0
3 years ago
The formula for the cost of buying a car is:
AnnyKZ [126]

Answer:

Step-by-step explanation:

known information:  Monthly payment = 350  deposit = 2000

Formula

12 X monthly payment + deposit=cost of car

12 X        350                +     2000=

12X350+2000=

Parentheses Exponents Multiplication Division Addition Subtraction

12X350=4,200

4,200+2000=6200

Don't forget the pounds sign, because it is money.

7 0
3 years ago
What is the mode for the set of data? 6,7,10,12,12,13<br><br> 10<br> 12<br> 13<br> 11
KonstantinChe [14]
12
because it is the only number that appears more than once which is basically the definition of mode.
4 0
3 years ago
Solve by factoring:
DerKrebs [107]
A.<span>(x+3)(x+4)=<span>0
x=-3,-4
B.X=5,4
hope this helps
</span></span>
7 0
2 years ago
Read 2 more answers
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