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
andrew-mc [135]
2 years ago
9

Need help with number 5. And 10. Please

Mathematics
1 answer:
Tamiku [17]2 years ago
7 0

Answer:

I don't see anything

Step-by-step explanation:

You might be interested in
The length of a rectangle is shown below:
Wittaler [7]
It would be A because it is 5 units down from the points
7 0
2 years ago
Use the commutative law of addition to write a equivalent expression ab+c
Scilla [17]

Answer:

c + ab

Step-by-step explanation:

The way an expression is written is the given you have presented to us.

The commutative law of addition would turn it around as

c + ab.

It just means change the order when adding. Not all systems allow this. It matters which way you put it in some systems.

5 0
3 years ago
In a population of similar households, suppose the weekly supermarket expense for a typical household is normally distributed wi
Rina8888 [55]

Answer:

P(Y ≥ 15) = 0.763

Step-by-step explanation:

Given that:

Mean =135

standard deviation = 12

sample size n  = 50

sample mean \overline x = 140

Suppose X is the random variable that follows a normal distribution which represents the weekly supermarket expenses

Then,

X \sim N ( \mu \sigma)

The probability that X is greater than 140 is :

P(X>140) = 1 - P(X ≤ 140)

P(X>140) = 1 - P( \dfrac{X-\mu}{\sigma} \leq \dfrac{140-135}{12})

P(X>140) = 1 - P( \dfrac{X-\mu}{\sigma} \leq \dfrac{5}{12})

P(X>140) = 1 - P( Z\leq0.42)

From z tables,

P(X>140) = 1 - 0.6628

P(X>140) = 0.3372

Similarly, let consider Y to be the variable that follows a binomial distribution of the no of household whose expense is greater than $140

Then;

Y \sim Binomial (np)

Y \sim Binomial (50,0.3372)

∴

P(Y ≥ 15) = 1- P(Y< 15)

P(Y ≥ 15) = 1 - ( P(Y=0) + P(Y=1) + P(Y=2) + ... + P(Y=14) )

P(Y \geq 15) = 1 - \begin {pmatrix} ^{50}_0 \end {pmatrix} (0.3372)^0 (1-0,3372)^{50} + \begin {pmatrix} ^{50}_1 \end {pmatrix} (0.3372)^1 (1-0,3372)^{49}  + \begin {pmatrix} ^{50}_2 \end {pmatrix} (0.3372)^2 (1-0,3372)^{48} +...  + \begin {pmatrix} ^{50}_{50{ \end {pmatrix} (0.3372)^{50} (1-0,3372)^{0}

P(Y ≥ 15) = 0.763

7 0
3 years ago
Could I have assistance, please...?<br><br> Find the domain of the square-root function.
andrezito [222]

Answer:

x≥-8

Step-by-step explanation:

domain of f(x) :

9(x+8)≥0

x+8≥0

x≥-8

5 0
2 years ago
What is 2/5 + 7/8?<br>a - 9/40<br>b - 9/13<br>c - 50/40<br>d - 51/40​
vichka [17]

Answer:

51/40

Step-by-step explanation:

2/5+7/8

(2*8/5*8)+(7*5/5*8)

16/40+35/40

=>51/40

8 0
3 years ago
Other questions:
  • In ΔTUV, t = 6.6 inches, ∠U=71° and ∠V=36°. Find the length of u, to the nearest 10th of an inch.
    7·1 answer
  • A 4-foot tall child walks directly away from a 12-foot tall lamppost at 2 mph. How quickly is the length of her shadow increasin
    12·1 answer
  • 22) Talia and Selena searched their house for dimes and
    6·1 answer
  • Can someone help me with problem 12?
    10·2 answers
  • using the graphing method to solve the equation 13(0.25)^x=7 Round your answer to the nearest thousandth
    10·1 answer
  • What is the balance as a result of having a credit of $84 and a debit of $29
    9·1 answer
  • Grace is having a slumber party and wants to download some movies to watch with her friends. Each movie download costs $4.99. If
    13·2 answers
  • Keep in mind significant figures. 6.020*0.0510=?
    13·2 answers
  • Brian has reduced his cholesterol level by 6% by following a strict diet and regular exercise. If his original level was 280, wh
    8·2 answers
  • Question 1<br> Let f(x) = 2x^2 - 3x - 4 and g(x) = x + 5. Find (fg)(x).
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!