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DedPeter [7]
2 years ago
7

Helpppp me plzzzzzzxzz

Mathematics
2 answers:
Fofino [41]2 years ago
4 0
Can you please take a better picture so I can see it better
KonstantinChe [14]2 years ago
4 0

Answer:

1. 0.82x

2. 1.18x

3. (7/10)x

4. (3/10)x

Step-by-step explanation:

When something is discount off 18 percent, it lowers the orginal price by 18 percent. Pretend the original price is x. Taking out 18 percent would be 0.82x

Same thing. 18 percent more, would be 1.18x since instead of subtracting, you add. 1.18x

3/10 in percent form is 30 percent. 100 - 30 = 0.7 so 0.7x

Since it has 3/10 <em>of </em> the orginal, it is multiply. If the orginal is x, x * 3/10 = (3/10)x.

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Solve the system of equations using substitution or elimination. Show all work for credit.
Tomtit [17]
Using substitution:
first you have to express one variable in terms of the other, in this we can express y in terms of x:
y =  \frac{ -  \frac{1}{2} x + 2}{3}  \\ y =  - x + 9

Since both expressions are equal to y, you have to equal both expressions like this:
\frac{  - \frac{ 1}{2}x + 2 }{3}  =  - x + 9
Now you can solve the equation:
-  \frac{1}{2} x + 2 = 3( - x + 9) \\   - \frac{ 1}{2}x  + 2 =  - 3x + 27 \\  \\  -  \frac{1}{2} x + 3x = 27 - 2 \\   \frac{5}{2} x = 25 \\ x =  \frac{(25)(2)}{5}  \\ x = 10
Knowing x=10, you can use any of the expressions we found before to find y. In this case I'm going to use y= -x+9 because it's simpler but boy should give you the same result

y =  - (10) + 9 \\ y =  - 1
So, the answer is x=10 and y=-1
4 0
3 years ago
Yo I’m I’m stuck on this. <br> can I get some help pls
ikadub [295]

Answer:

Which problem?

Step-by-step explanation:

7 0
2 years ago
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Plz answer quickly will mark brainless
WARRIOR [948]
Banana nanznznananannanakakaka
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3 years ago
Decorations for a seventh-grade dance take 1/6 of the student council's budget. entertainment takes 3/8 of the budget. what frac
defon

Answer:

11/24 is left over

Step-by-step explanation:

1/6 + 3/8 = 13/24

24/24 - 13/24 = 11/24

11/24 of the budget is left over

Hope this helps

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3 years ago
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Answer:

\frac{24}{25}

Step-by-step explanation:

\cos(\theta)=\frac{\textrm{adjacent}}{\textrm{hypotenuse}}

4 0
2 years ago
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