All categories

3 years ago

Solve for X: 5x+2=12 A) -2 B) 5 C) 2 D) 1

Mathematics

2 answers:

Ksenya-84 [330]3 years ago

5 0

$\huge\boxed{\text{C)}\ 2}}$

Start with the original equation.

$5x+2=12$

Subtract $2$ from both sides.

$5x=10$

Divide both sides by $5$ .

$\large\boxed{x=2}$

puteri [66]3 years ago

3 0

Answer: C) 2

Step-by-step explanation: The first step is to subtract 2 from both sides. This leaves you with 5x=10. Lastly, you divide both sides by 5. You end up with x=2

You might be interested in

The lengths of a triangle are in the extended ratio 6:7:9. The perimeter of the triangle is 88 cm. What are the lengths of the s

hoa [83]

Answer:

24cm, 28cm, 36cm

Step-by-step explanation:

Since the sides have a ratio of 6:7:9 we can connect them to the variable of x and find the sum of the sides for the perimeter:

P = 6x + 7x + 9x = 88

Combine like terms: 22x = 88

Divide by 22 on both sides: 22x/22 = 88/22

Solve for x: x = 4

6x = 6(4) = 24cm

7x = 7(4) = 28cm

9x = 9(4) = 36 cm

5 0

3 years ago

In a survey of 90 students 20 choose rock.40 chose hip hop 30 chose country. In a school of 360 students how many would be expec

lina2011 [118]

Answer:

The students would be expected to choose rock be 80 or students choose hip hop be 160 or choose to country be 120.

Step-by-step explanation:

Given:

In a survey of 90 students 20 choose rock, 40 choose hip hop and 30 choose country.

Now, to find the students expected to choose hip hop or rock or country in a school of 360 students.

Let the number of students expected to choose rock be $x.$

Let the number of students expected to choose hip hop be $y.$

Let the number of students expected to choose country be $z.$

Total number of students = 360.

Now, to get the number of students choosing hip hop or rock or country by using cross multiplication method:

In a survey of 90 students 20 choose rock.

So, 90 is equivalent to 20.

Thus, 360 is equivalent to $x$ .

$\frac{90}{20} =\frac{360}{x} \\\\By\ cross\ multiplying\ we\ get:\\\\90x=7200\\\\Dividing\ both\ sides\ by\ 90\ we\ get:\\\\x=80.$

Thus, the number of students expected to choose rock is 80.

Now,

In a survey of 90 students 40 choose hip hop.

So, 90 is equivalent to 40.

Thus, 360 is equivalent to $y.$

$\frac{90}{40} =\frac{360}{y} \\\\By\ cross\ multiplying\ we\ get:\\\\90y=14400\\\\Dividing\ both\ sides\ by\ 90\ we\ get:\\\\y=160.$

Therefore, 160 students expected to choose hip hop.

And,

In a survey of 90 students 30 choose country.

So, 90 is equivalent to 30.

Thus, 360 is equivalent to $y.$

$\frac{90}{30} =\frac{360}{z} \\\\By\ cross\ multiplying\ we\ get:\\\\90x=10800\\\\Dividing\ both\ sides\ by\ 90\ we\ get:\\\\x=120.$

Hence, 120 students expected to choose country.

Therefore, the students would be expected to choose rock be 80 or students choose hip hop be 160 or choose to country be 120.

5 0

4 years ago

What is the volume of this rectangular prism?

nirvana33 [79]

262 1/2 the last one

6 0

3 years ago

Read 2 more answers

What is the vertex form of 2x^2+12x+14

Finger [1]

Answer:

2 (x + 3)^2 - 2

Step-by-step explanation:

1. Factor the 2 out of the equation (don't forget about it - it will be used later). This gives you x^2 + 6x + 7

2. Subtract the 7 over. This gives you x^2 + 6x = -7

3. Take b (6), divide it by 2 (3), and square it (9). Then add that to both sides of the equation. This gives you x^2 + 6x + 9 = 2

4. Factor the left side of the equation. This gives you (x + 3)^2 = 2

5. Subtract the 2 over. This gives you (x + 3)^2 - 2

6. Remember that 2 we factored out of the equation earlier? Well that goes in front of the parentheses now, giving you the final answer of 2 (x + 3)^2 -2

8 0

4 years ago

A.5÷4 divide and show work

expeople1 [14]

Answer:

1.25

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers