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jarptica [38.1K]
2 years ago
14

What is the value of x if... 9x - 4 - 4x = 8 + 3x

Mathematics
1 answer:
Ierofanga [76]2 years ago
7 0

Hello!

Answer:

x=6

Step-by-step explanation:

Hope this helps!

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A school principal ordered 1,000 pencils. He gave an equal number to each of 7 teachers until he had given out as many as possib
Semenov [28]
1000/7 = <span>142.857142857

Because this is not an even number we take "142", then times it by 7 teachers.

142*7= 994

1000 - 994 = 6 Pencils left</span>
3 0
3 years ago
Find 12 +13 - (-9)+(-19.4) +3.3
Rina8888 [55]

Answer:

17.9

Step-by-step explanation:

You could use PEMDAS but you don't really need to because this is just adding an subtracting.

5 0
3 years ago
Read 2 more answers
The altitude a ( in feet) of a plane t minutes after lift off is given by a=3400t+600
Julli [10]

Answer:

  6 minutes

Step-by-step explanation:

'a' in the formula represents altitude in feet. You are told the altitude is 21000 feet, so put that into the formula:

   21000 = 3400t +600

You can solve this for t:

  20400 = 3400t . . . . . subtract 600 from both sides

  6 = t . . . . . . . . . . . . . . . divide both sides by 3400

The problem statement tells you that t represents minutes after lift off, so this solution means the altitude is 21000 feet 6 minutes after lift off.

The question is asking for the number of minutes after lift off that the plane reaches an altitude of 21000 feet, so this answers the question directly:

  The plane is at an altitude of 21000 feet 6 minutes after lift off.

4 0
3 years ago
A rectangular pyramid has a volume of 90 cubic feet. What is the volume of a rectangular prism with the same size base and same
yanalaym [24]

Answer:

30 cubic feet

Step-by-step explanation:

Here we are given the volume of rectangular pyramid as 90 cubic feet as we are required to find the volume of rectangular prism.

For that we need to use the theorem which says that

the volume prism is always one third of the volume of the pyramid . Whether it is rectangular of triangular base. Hence in this case also the volume of the rectangular prism will be one third of the volume of the rectangular pyramid.

Volume of Rectangular prism = \frac{1}{3} * Volume of rectangular pyramid

=  \frac{1}{3} * 90

= 30

8 0
3 years ago
Bentuk sederhana dari 3√24 2√3(√3-2√18)
Sauron [17]
3√24 + 2√3(√3-2√18)  =

3(√(4*6) + 2√3( √3-2√(2*9)) = 
3*2√6 + 2√3 ( √3 - (2*3) √2) = 
6√6 + 2√3(√3 - 6√2) = 
6√6 + 6 - 12√3*√2 = 
6√6 + 6 - 12√(6) = 
6 - 6√6   = 6(1-√6)
8 0
3 years ago
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