1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kvv77 [185]
3 years ago
15

Solve this equation5(-7x-3)- 8x=-230​

Mathematics
1 answer:
Brut [27]3 years ago
5 0

Simplifying

5(7x + -3) = 230

Reorder the terms:

5(-3 + 7x) = 230

(-3 * 5 + 7x * 5) = 230

(-15 + 35x) = 230

Solving

-15 + 35x = 230

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '15' to each side of the equation.

-15 + 15 + 35x = 230 + 15

Combine like terms: -15 + 15 = 0

0 + 35x = 230 + 15

35x = 230 + 15

Combine like terms: 230 + 15 = 245

35x = 245

Divide each side by '35'.

x = 7

Simplifying

x = 7

You might be interested in
A star is a swirling mass of dense gases powered by thermonuclear reactions. The great solar furnace transforms 7 million tons o
marta [7]

Answer:

2.20752 x 10^{24}

Step-by-step explanation:

The first thing you have to do is to look for the number of seconds in one year. You have to multiply 365 days by 86,400 seconds.

  • 365 days refer to the total number of days per year
  • 86,400 seconds refer to the number of seconds per day

Let's solve.

  • 365 x 86,400 = 31,536,000 or 3.1536 x 10^{7}

<em>Therefore, one year has 3.1536 x </em>10^{7}<em> seconds.</em>

Next, you have to know the number of seconds in 10 billion years.

  • (3.1536 x 10^{7}) x  (1.0 x 10^{10}) = 3.1536 x 10^{17}

The last step is to multiply the number of seconds in 10 billion years to 7 million tons of mass per second.

  • (3.1536 x 10^{17}) x 7,000,000 = 2.20752 x 10^{24}
6 0
2 years ago
Can someone help me wit #4 plzz
iris [78.8K]

Answer: It represents the area of the two circular sides ("lids")

Explanation:

Imagine you made a cylinder out of 3 pieces of paper. The cylinder can be decomposed into two circular shapes (radius r) and one rectangular piece with two side lengths: one is "h", the other has to be long enough to go around each of the disks, so it has to be 2*pi*r long.

So the term 2*pi*r*h is the area of the rectangular piece and pi*r^2 is the area of each of the "lids" Since there are two of those, the term 2*pi*r^2 represents the area of the bottom and top lids.

7 0
3 years ago
Write the equation of a line that has a slope of -4 and goes through (-2,7).
Anni [7]

Answer:

y = -4x - 1

Step-by-step explanation:

Equation of a line is given as:

y = mx + b

Where

m is the slope

and

b is the y-intercept (y-axis cutting point)

Since we know slope is -4, we can write:

y= mx + b

y = -4x+ b

Given the point (-2,7) , we can say:

x = -2

and

y = 7

Plugging these 2 values, we can solve for b:

y = -4x + b

7 = -4(-2) + b

7 = 8 + b

b = 7 - 8

b = -1

Now, we have the equation:

y = -4x - 1

7 0
3 years ago
40 points and brainliest
Alexeev081 [22]
9. x < −17

10. x < 6

11. 10 < x < 21

12. Move all terms not containing x from the center section of the inequality. No solution.

13. −3 < x < 3

Please give brainliest I worked hard.
7 0
2 years ago
A quality control inspector found that 1.3% of 1500 computers inspected were defective. How many computers were defective?
Lilit [14]

Given that percent of computer infected which is found by quality control inspector = 1.3%

Total number of computers = 1500

Now we have to find the number of Defective computer. To find that we will just need to find the product of given defective percent by the total number of computers.

Total number of defective computers = 1.3% of 1500

Total number of defective computers = 0.013* 1500

Total number of defective computers = 19.5

Hence final answer is approx 20 computers.



8 0
2 years ago
Read 2 more answers
Other questions:
  • Combine like terms:2y+8-6y+15
    10·2 answers
  • Malloy solved the equation −5x − 16 = 8; his work is shown below. Identify the error and where it was made. −5x − 16 = 8 Step 1:
    14·2 answers
  • BRAINLIEST!!!
    12·1 answer
  • Choice leads for developing new business opportunities are randomly assigned to 50 employees who make up the sales team. Half of
    9·1 answer
  • Calculate the area of parallelogram. <br><br>​
    8·2 answers
  • What is the measure of the missing angle?
    5·1 answer
  • The local library has a children's section with picture books and chapter books. The ratio is 2:3. If there are a total of 500 b
    11·2 answers
  • Mr. Matthew is testing the online popularity of his custom made belts and wallets that were marketed differently. Some items wer
    15·2 answers
  • Kyle started the week with $50 in his lunch account. He bought lunch everyday at school, he spent $5 dollars each day. Let x rep
    8·1 answer
  • A solid wood cone 12 cm in diameter and 8 cm high sells for $1.19. A second wood cone is 17 cm in diameter and 12 cm high. the f
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!