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Angelina_Jolie [31]
3 years ago
9

15-2x=3x x= please help me

Mathematics
2 answers:
vampirchik [111]3 years ago
8 0
Reemmber you can do anything to an equaiotn as long as y ou do it to both sides

15-2x-3x
add 2x to both sides
15+2x-2x=3x+2x
15+0=5x
15=5x
divide both sides by 5
15/5=(5x)/5
3=(5/5)x
3=1x
3=x

x=3
alex41 [277]3 years ago
7 0
15-2x=3x
Add 2x to both sides
15=5x
Divide by 5 on both sides
3=x

Hope it helps (:
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Hakim saves money for one year to buy a computer.
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Answer:

$111

Step-by-step explanation:

First we need to take a look at the bank account of Hakim. Hakim initially invested $700 in the bank with a 5% simple interest annually. Since Hakim waited for an entire year before buying the computer, he will then have the extra 5% interest from the bank.

Let's first compute for how much Hakim will have in total in the bank.

A = P(1 + rt)

P = 700 Initial Investment

r = 5% or 0.05 Interest

t = 1 Year

A = 700(1 + (0.05 x 1))

A = 700(1 + 0.05)

A = 700(1.05)

A = 735

So now we know that Hakim has a total of $735 in his bank account.

Now let's move on to calculating the total cost of the computer. We know that the sales tax is always computed after the discounted price.

So first we find the discounted price.

x = 750

d = 20% or 0.20

Discount = 750 x 0.20

Discount = 150

Now that we have the discount of the computer, we then simply subtract the discount to the initial price.

750 - 150 = 600.

The computer will then cost $600 with the discounted price.

Now we have to find the sales tax.

Sales Tax = 4% or 0.04

Total Discounted Price = 600

600 x 0.04 = $24

Now that we have the sales tax, we simply add the sales tax to the discounted price.

600 + 24 = 624.

Now that we know how much the total cost of the computer is with the discount and sales tax, we simply subtract the total cost of the computer to Hakim's current account balance.

735 - 624 = 111

Hakim will have a total of $111 in his bank account after purchasing the computer.

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3 years ago
Find the distance between 13/3 and the square root of 16/9
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Answer:

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Now distance between the two= 13/3-4/3 which is equal to 9/3 and 9 divided by 3 is 3.

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What is m∠ABC? Justify your reasoning. Using the addition property of equality, 40 + 15 = 55, so m∠ABC = 55°. Using the subtract
N76 [4]

Answer:

Using the Angle Addition Postulate, 15 + 40 = m∠ABC. So, m∠ABC = 55° after simplifying.

Step-by-step explanation:

The  Angle Addition Postulate is gotten from angles placed side by side to form a resulting angle that is the sum of all the individual angles.

If D is the interior of ABC then, ABC is split into two parts i.e ABD and DBC, then the measure of ABC is the sum of the individual two parts

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Using the Angle Addition Postulate:

m∠ABC = m∠ABD + m∠DBC

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m∠ABC = 55°

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3 years ago
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