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
Lerok [7]
3 years ago
7

What is 2( 5x + 5) using the distributive property

Mathematics
2 answers:
Mrrafil [7]3 years ago
8 0
You must distribute the first number to the others, 2*5x, ignore the x and add it at the end, 10x. then distribute 2 to the 5 which is also 10. giving you a final answer of 10x+10, keep the same symbol that is separating the numbers in parenthesis
ratelena [41]3 years ago
6 0
2 x 5x= 10x
5x2=10
The final equation is 10x+10
You might be interested in
Please solve this ASAP for 30 points
e-lub [12.9K]

Answer:

welpp

Step-by-step explanation:

3 0
3 years ago
Simplify the equation 28 - 6n + 7(2n -8)-3n
Flauer [41]

Answer:

5n-28

Step-by-step explanation:

28-6n+7(2n-8)-3n

28-6n+14n-56-3n

28+8n-56-3n

28-56+8n-3n

-28+5n

5n-28

6 0
3 years ago
Read 2 more answers
The following sequence is an arithmetic sequence. You are not shown very many terms of this sequence, but you are shown enough t
Olegator [25]
12

since the difference of the first and third value is ten, each value is five more than the previous value
7 0
3 years ago
Read 2 more answers
Find the measure of this angle in the triangle.
bixtya [17]

Answer:

the angle measures 85 degrees

4 0
2 years ago
A consumer group has determined that the distribution of life spans for gas ovens has a mean of 15.0 years and a standard deviat
Mnenie [13.5K]

Answer:

B. Mean = 1.6 years, standard deviation = 0.92 years, shape: approximately Normal.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Subtraction of normal variables:

When we subtract normal variables, the mean is the subtraction of the means, while the standard deviation is the square root of the sum of the variances.

35 gas ovens

A consumer group has determined that the distribution of life spans for gas ovens has a mean of 15.0 years and a standard deviation of 4.2 years. This means that:

\mu_G = 15, \sigma_G = 4.2, n = 35, s_G = \frac{4.2}{\sqrt{35}} = 0.71

40 electric ovens.

The distribution of life spans for electric ovens has a mean of 13.4 years and a standard deviation of 3.7 years.

\mu_E = 13.4, \sigma_E = 3.7, n = 40, s_E = \frac{3.7}{\sqrt{40}} = 0.585

Which of the following best describes the sampling distribution of barXG - bar XE, the difference in mean life span of gas and electric ovens?

By the Central Limit Theorem, the shape is approximately normal.

Mean: \mu = \mu_G - \mu_E = 15 - 13.4 = 1.6

Standard deviation:

s = \sqrt{s_G^2+s_E^2} = \sqrt{(0.71)^2+(0.585)^2} = 0.92

So the correct answer is given by option b.

3 0
3 years ago
Other questions:
  • Harry took a loan from the bank.
    9·2 answers
  • The volume of a cube is found using the formula l3, where l is the side length. What is the volume of a cube, in cubic feet that
    6·1 answer
  • What's the simplified form of x - 1 + 4 + 7x - 3 ?
    11·2 answers
  • In exercising its oversight function, it is not unusual for Congress to
    9·1 answer
  • 5)Place the numbers in order least to greatest 70%,2/3,0.68,-2.9,-1/2,150%
    15·1 answer
  • 9. The Brightline train travels 204 miles in 3 hours, moving at a constant
    12·1 answer
  • PLS HELP PLS ITS TIMES ILL GIVEBRAINLIEST IF CORRECT HELP PLEASE!!!!!!!!!!!!!!!!!!!!!!
    8·2 answers
  • The height of a triangle is 5 inches less than twice the base of the triangle. Which equation ents this relationship if x repres
    15·1 answer
  • What is the length of overline CD to the nearest tenth ? 10.3 units
    6·1 answer
  • A ball is dropped from a cliff that is 135 m high.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!