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coldgirl [10]
3 years ago
5

Multiply and answer in scientific notation:

Mathematics
1 answer:
saveliy_v [14]3 years ago
6 0

Answer:

50000000000 if your combining them both or if separate Q1: 25000000 Q2: 2000

Step-by-step explanation:

2.5(10^7)(2(10^3))

=25000000*2000

=2.5*10000000*2*1000

=(2.5*2)*(10000000*1000)

=5*10000000000

=50000000000

If separate:

question 1:

2.5(107)

=2.5*107

=2.5*(10*10*10*10*10*10*10)

=25000000

question 2:

2(103)

=2*103

=2*(10*10*10)

=2000

I hope this helps!

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Jake has decided to invest in three business ventures. The total cost of investing in all three ventures is $15,000. The combine
Arte-miy333 [17]
X = first venture, y = second venture, z = third venture

x + y + z = 15,000
x + z = y + 7000
3x + 2y + 2z = 39,000
these are ur equations.....

x + y + z = 15,000
x - y + z = 7000
--------------------add
2x + 2z = 22,000

x + y + z = 15,000....multiply by -2
3x + 2y + 2z = 39,000
-------------------
-2x - 2y - 2z = - 30,000 (result of multiplying by -2)
3x + 2y + 2z = 39,000
------------------add
x = 9,000

2x + 2z = 22,000
2(9000) + 2z = 22000
18,000 + 2z = 22000
2z = 22000 - 18000
2z = 4000
z = 4000/2
z = 2,000

x + y + z = 15,000
9000 + y + 2000 = 15,000
11,000 + y = 15,000
y = 15,000 - 11,000
y = 4,000

first venture (x) = 9,000 <==
second venture (y) = 4,000 <==
third venture (z) = 2,000 <==
7 0
3 years ago
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What is 9^2÷(2+1)×30-3^3
weeeeeb [17]
I’m pretty sure that the answer 783 :)
6 0
4 years ago
Help rn please!! Urgent
Aleks04 [339]

Answer:

<em>x² + 2x - 15 = 0 </em>

Step-by-step explanation:

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(x + 5)(x - 3) = 0

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8 0
3 years ago
What is -3/4 – (-1/2)?<br> A. -5/4<br> B. -1/4<br> C. 1/4<br> D. 1/2
Delicious77 [7]

Answer:

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Step-by-step explanation:

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3 years ago
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Justify each step in solving the equation -3(2x-3)=25-8x by writing a reason for each statement.
Mice21 [21]

Answer: x= 8.


Step-by-step explanation: Given equation -3(2x-3)=25-8x.

Step 1: We have -3 in front of (2x-3). We always simplify a parenthesis first.

Therefore, applying Distributive property in first step, we get

-6x +9 = 25-8x.

Step 2:  We need to get rid 9 from left side to get constant numbers on right side.

9 is being added on left side.

So, we would apply reverse operation of addition.

Therefore, applying Subtraction property of equality, we get

-6x +9-9 = 25-8x-9

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Step 3: We need to get rid 8x from right side.

The reverse operation of subtraction is addition.

Therefore, applying Addition property of equality, we get

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Step 4: We need to isolate it for x.

So, applying Division property of equality, we get

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4 0
3 years ago
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