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3 years ago

2x + 3 – 4 = 5x - 7 2 -2 - 9 9

Mathematics

2 answers:

mr_godi [17]3 years ago

6 0

Step-by-step explanation:

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Marysya12 [62]3 years ago

3 0

2x + 3 - 4 = 5x - 7

=> 2x + 3 - 4 + 7 = 5x

=> 3 - 4 + 7 = 5x - 2x

=> 3 - 4 + 7 = 3x

=> -1 + 7 = 3x

=> 6 = 3x

=> 6/3 = x

=> 2 = x

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Please help Solve 5(2x - 3) = 5x - 10 for c A) 2 B) 1 C) 0 D) -1

bixtya [17]

Answer:

Step-by-step explanation:

Use distributive property:

5(2x - 3) = 5x - 10

10x - 15 = 5x - 10

Isolate the variable:

10x = 5x - 10 + 15

10x = 5x + 5

10x - 5x = 5

5x = 5

x = 1

4 0

3 years ago

Read 2 more answers

What is the solution to the equation? x=3 x=1 x=-1 x=-3

Degger [83]

Answer:

x= - 3

Step-by-step explanation:

2x - 3= 4x + 3

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x = - 3

8 0

3 years ago

a restaurant holds an anniversary celebration of 90 diners. Only 27 are offered free dessert, what is the percent of dinners not

alex41 [277]

Answer:

70%

Step-by-step explanation:

(90-27)/90

=63/90

=0.7

Changing it to percentage:

=70%

6 0

4 years ago

Cylinder A is mathematically similar to cylinder B. The height of cylinder A is 10cm and its surface area is 440cm2 . The surf

Pie

Answer:

$440 = 2\pi {r}^{2} + 2\pi(r)10 \\$

$3960 = 2\pi {r}^{2} + 2\pi(r)h$

$\frac{3960 = 2\pi {r}^{2} + 2\pi(r)h}{440 = 2\pi {r }^{2} + 2\pi(r)10 }$

$9 = \frac{h}{10}$

h=90

5 0

3 years ago

Find an expression for the number in the nth term pattern of the sequence. 4 , 7 , 12, 19

EastWind [94]

Answer:

n^2 + 3.

Step-by-step explanation:

4 7 12 19

Differences are 3 5 7 so this a quadratic sequence.

2nd difference = 2 2

So the first part of the expression is n^2

Terms: 4 7 12 19

n^2 1 4 9 16

Difference = 3 3 3 3 3

So the answer is n^2 + 3.

7 0

2 years ago