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nikitadnepr [17]
1 year ago
15

4x7 = 2x + 15 Does the equation have one none, or infinite solutions? Explain why.

Mathematics
1 answer:
liq [111]1 year ago
6 0

Answer:

There is only one solution

Step-by-step explanation:

4x - 7 = 2x + 15

+7        +7

4x = 2x + 22

-2x   -2x

2x = 22

divide by 2 into both sides

x = 11

Since there is only one answer, there is only ONE solution.

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PLEASE HELP !! IT WOULD BE GREATLY APPREACIATED ! I DONT KNOW HOW TO DO THIS
serg [7]

(A) Bella's TV ratio of sides: 36"/27" = 1.333...

Lenny's: 52"/29.25" = 1.777...

Bella's and Lenny's TVs are NOT similar - their side ratios are different. Bella's is 4:3 while Lenny's is close to 16:9.

(B) Bella's TV has an exact ratio of 4:3 (36/27=4/3) and so is the older type.

Lenny's TV has a ratio of 52"/29.25". Divide both 52 and 29.25 by 3.25 to get 16/9, or 16:9. So Lenny's is the newer type.


4 0
3 years ago
The Predecessor of ( -41 ) is ---------------​
UkoKoshka [18]
The Predecessor of ( -41 ) is --------------- -42
7 0
3 years ago
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20 Points Available<br> Find the measure of angle 2.
Hatshy [7]
The angle of 2 is 150 degrees
4 0
3 years ago
Read 2 more answers
Please help solve the for x. <br> I'm offering 20 points
andrew11 [14]

Answer:

1/-21

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

17

4

x+

−1

12

=6x

Step 2: Subtract 6x from both sides.

17

4

x+

−1

12

−6x=6x−6x

−7

4

x+

−1

12

=0

Step 3: Add 1/12 to both sides.

−7

4

x+

−1

12

+

1

12

=0+

1

12

−7

4

x=

1

12

Step 4: Multiply both sides by 4/(-7).

(

4

−7

)*(

−7

4

x)=(

4

−7

)*(

1

12

)

x=

−1

21

3 0
3 years ago
A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains. If a trip of 300
densk [106]
Let p and m represent the numbers of miles in the plains and mountains, respectively.
.. p + m = 300 . . . . . . . the whole trip was 300 miles

time = distance/speed, so the trip time can be written as
.. p/90 + m/37.5 = 3 48/60
.. 5p + 12m = 1710 . . . . . . . . . . multiply by 450 to put in standard form

You can solve these two equations by any of several means. The variable p can be eliminated by subtracting 5 times the first from the second.
.. (5p +12m) -5(p +m) = 1710 -5*300
.. 7m = 210
.. m = 30

30 miles of the trip was through the mountains.
5 0
3 years ago
Read 2 more answers
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