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
yarga [219]
3 years ago
8

Help with numbers 1/6 please

Mathematics
1 answer:
Maslowich3 years ago
7 0

Answer:

1. A=56.25

Step-by-step explanation:

sry but i dont know the answer to six

You might be interested in
Solve equation. What is the solution set<br> -4(z-2)+4=21-(z-3)
inessss [21]

Answer:

z=-75/17

Step-by-step explanation:

Expand this equation:

-4z+8+4=-21z-63

-4z+21z=-63-8-4

17z=-75

z=-75/17

8 0
2 years ago
A powder diet is tested on 49 people, and a liquid diet is tested on 36 different people. Of interest is whether the liquid diet
brilliants [131]

Answer:

There is not enough evidence to support the claim that the liquid diet yields a higher mean weight loss than the powder diet (P-value = 0.15).

Step-by-step explanation:

This is a hypothesis test for the difference between populations means.

The claim is that the liquid diet yields a higher mean weight loss than the powder diet.

Then, the null and alternative hypothesis are:

H_0: \mu_1-\mu_2=0\\\\H_a:\mu_1-\mu_2< 0

The significance level is 0.05.

The sample 1 (powder diet group), of size n1=49 has a mean of 42 and a standard deviation of 12.

The sample 2 (liquid diet group), of size n2=36 has a mean of 45 and a standard deviation of 14.

The difference between sample means is Md=-3.

M_d=M_1-M_2=42-45=-3

The estimated standard error of the difference between means is computed using the formula:

s_{M_d}=\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}=\sqrt{\dfrac{12^2}{49}+\dfrac{14^2}{36}}\\\\\\s_{M_d}=\sqrt{2.939+5.444}=\sqrt{8.383}=2.895

Then, we can calculate the t-statistic as:

t=\dfrac{M_d-(\mu_1-\mu_2)}{s_{M_d}}=\dfrac{-3-0}{2.895}=\dfrac{-3}{2.895}=-1.04

The degrees of freedom for this test are:

df=n_1+n_2-1=49+36-2=83

This test is a left-tailed test, with 83 degrees of freedom and t=-1.04, so the P-value for this test is calculated as (using a t-table):

\text{P-value}=P(t

As the P-value (0.15) is greater than the significance level (0.05), the effect is not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the liquid diet yields a higher mean weight loss than the powder diet.

6 0
3 years ago
Read 2 more answers
(Number 8 answer ?) I’m having trouble with this concept.
coldgirl [10]

Answer: C

I put the working in the other question you put up, but to put it briefly, multiply everything by 6 because all the options provided have a -6 inside that was meant to be the -1

5 0
3 years ago
For the function F (X) = (x - 2)^2 + 4, identify the vertex.
VLD [36.1K]

Answer:

The answer will be D. (2,4)

5 0
2 years ago
2:x and 12:18 a-3, b-4, c-6
nirvana33 [79]

The Corrected Problem is :

2:x and 12:18 identify the value of x that makes each pair of ratios equivalent .

Solution:

If a pair of Ratios are equivalent then we can write

\frac{2}{x}=\frac{12}{18}\\ \\ \text{Simplify we get}\\ \\ 12x=36\\ \\ \text{Divide both the sides by 12 we get}\ \\ \\ \frac{12x}{12}=\frac{36}{12}\\ \\  x=3\\ \\ \text{Hence the required value of x is 3}\\

3 0
3 years ago
Read 2 more answers
Other questions:
  • Angle relationships with parallel lines
    7·2 answers
  • Please help. 10 points and brainliest.
    9·1 answer
  • Name an angle supplementary to ∠COD<br> a. ∠AOE<br> b. ∠BOD<br> c. ∠COB<br> d. ∠COA
    13·2 answers
  • Sophia owns a clothing store that sells graphic T-shirts. n is the number of
    10·1 answer
  • Look at the image HELP
    10·1 answer
  • I have a hard time with this still. I will mark you the Branilest.
    11·2 answers
  • Re-write the quadratic function below in Standard Form<br> y = -7(x + 9) (x - 1)
    7·1 answer
  • Name a pair of adjacent angles. Explain why they are adjacent.
    10·1 answer
  • 20 POINTS! PLATO HELP! NUTRITION CLASS!
    8·1 answer
  • (20x2-7x-3)-(9x2-12x-5)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!