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Marizza181 [45]
3 years ago
13

Can someone please help me with this question?

Mathematics
1 answer:
scoundrel [369]3 years ago
5 0
90% Because you he’s been getting 85 and higher
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What is 3x + 11 equals 5x minus 9
Iteru [2.4K]
Here are the steps for the equation:
3x+11=5x-9
subtract 3x
11=2x-9
add 9
20=2x
divide by 2
10=x
switch sides
x=10  

Hope this helps! :)
8 0
3 years ago
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The school dance committee wants to know whether the students in the entire school prefer ballet or jazz. The dance committee dr
svlad2 [7]

Answer:all students in each grade

Step-by-step explanation:

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Noah is buying a pair of jeans and using a coupon for 10%off. The total price is $56.70 which includes $2.70 in sales tax. Noah’
lora16 [44]

Answer:

See below.

Step-by-step explanation:

So, we know that Noah's purchase can be modeled by the equation:

x-0.1x+2.70=56.70

Part 1)

The solution to the equation will be the value of x.

In this case, x will represent the original price of the jeans.

We know that Noah has a coupon for 10% off the <em>original price of the jeans</em>.

So, 0.1x will represent how much of the original price Noah gets a a discount on.

Therefore, (x - 0.1x) represents the total cost of the jeans <em>after</em> the coupon.

So, x is our original price of the jeans.

Part 2)

To verify that 70 is <em>not</em> a solution, we can simply substitute 70 for x and check whether or not the equation is true. So:

(70)-0.1(70)+2.7\stackrel{?}{=}56.70

Multiply:

70-7+2.7\stackrel{?}{=}56.7

Subtract:

63+2.7\stackrel{?}{=}56.7

Add:

65.7\neq56.7

However, we <em>can</em> verify that 60 <em>is</em> the solution by substituting. So, substitute 60 for every x:

(60)-0.1(60)+2.7\stackrel{?}{=}5.7

Multiply:

60-6+2.7\stackrel{?}{=}56.7

Subtract:

54+2.7\stackrel{?}{=}56.7

Add:

56.7\stackrel{\checkmark}{=}56.7

So, 60 is indeed the solution and is the value of x.

So, this means that $60 was the original price of the jeans.

8 0
3 years ago
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PLSS HELP THE TEACHER IS ASKING FOR MY ANSWERS CUZ I WAS SUPPOSED TO DO IT AND I NEVER WAS PREPARED PLSSS HELP IM NEXT
Goshia [24]
Okay!!! What are the questions?
8 0
2 years ago
I need help simplifying this: √289
leonid [27]
The answer is 17 hoped this helped 
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