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
AnnZ [28]
2 years ago
11

I NEED HELP FASTTT D:

Mathematics
1 answer:
Doss [256]2 years ago
4 0

Answer:

12x + 15 = 12x - 15

Step-by-step explanation:

-5x - 25 = 5x + 25

-25 = 10x + 25

-50 = 10x

-5 = x

12x + 15 = 12x - 15

15 = -15  ( No solution )

12x + 15 = 3(4x + 5)

12x + 15 = 12x + 15

12x = 12x

0 = 0  ( True for all x's )

7x + 21 = 21

7x = 0

x = 0

You might be interested in
What is 5 divided by 2930
Anna007 [38]
It would be: 5/2930 = 0.0017
6 0
3 years ago
This question pls I don’t understand
adell [148]

Answer:

19.4

Step-by-step explanation:

50% is one half

so 9.7 is half of ....

Then .... is twice 9.7

.... = 2 × 9.7 = 19.4

5 0
3 years ago
3. Bobbi bought 4 rolls of
sveta [45]

Answer:

400 x however long those ribbons are

Step-by-step explanation:

1 meter is 100 centimeters, and there are four rolls. so 4x100 equals 400, and you multiply that by the length that you didn't provide.

3 0
2 years ago
How do I solve this problem?
Anvisha [2.4K]

Answer:

y+11=-\frac{1}{4}(x-4)

Step-by-step explanation:

since the equation is perpendicular to y=4x-2, m=-1/4 (negative reciprocal). (x_1,y_1)=(4,-11), plug all the values into the equation y- y_1 = m(x-x_1) and we get y+11=-\frac{1}{4}(x-4)

8 0
3 years ago
At a cell phone assembly plant, 77% of the cell phone keypads pass inspection. A random sample of 111 keypads is analyzed. Find
Serggg [28]

Answer:

The probability that the proportion of passed keypads is between 0.72 and 0.80 is 0.6677.

Step-by-step explanation:

According to the Central limit theorem, if from an unknown population large samples of sizes <em>n</em> > 30, are selected and the sample proportion for each sample is computed then the sampling distribution of sample proportion follows a Normal distribution.

The mean of this sampling distribution of sample proportion is:

 \mu_{\hat p}=p

The standard deviation of this sampling distribution of sample proportion is:

\sigma_{\hat p}=\sqrt{\frac{p(1-p)}{n}}

Let <em>p</em> = the proportion of keypads that pass inspection at a cell phone assembly plant.

The probability that a randomly selected cell phone keypad passes the inspection is, <em>p</em> = 0.77.

A random sample of <em>n</em> = 111 keypads is analyzed.

Then the sampling distribution of \hat p is:

\hat p\sim N(p,\ \sqrt{\frac{p(1-p)}{n}})\\\Rightarrow \hat p\sim N (0.77, 0.04)

Compute the probability that the proportion of passed keypads is between 0.72 and 0.80 as follows:

P(0.72

                             =P(-1.25

Thus, the probability that the proportion of passed keypads is between 0.72 and 0.80 is 0.6677.

8 0
3 years ago
Other questions:
  • 12s + 4 + 4s - 2 simplified need help with school work
    10·2 answers
  • Which expression represents the algebraic phrase “eleven less than seven times a number”?
    14·2 answers
  • Write the numbers in scientific notation.
    9·1 answer
  • (a) The only even prime number is ....​
    10·2 answers
  • Kevin won to gold fish a the county fair he put them in a bowl that hold 2 liters of water the next day he put them in a bowl th
    11·1 answer
  • If f(x) = 2x2 + 1, what is f(x) when x = 3?.
    14·1 answer
  • 3 2/3 of 4/5 of pizza equals how many pizza
    12·1 answer
  • What is 15 divided by 63.0
    13·1 answer
  • 12/15 * 5/6
    11·2 answers
  • Help me now !!!!!<br> help i need help
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!