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
kolezko [41]
3 years ago
11

HURRY, THIS IS TIMED!!!

Mathematics
1 answer:
otez555 [7]3 years ago
3 0

Answer:

Step-by-step explanation:

1. not equivalent

2. not equivalent

3. fully simplified

4.not fully simplified

5. not fully simplified

6. not fully simplified

You might be interested in
The sum of the first 6 terms of a geometric sequence is 7, 812. the common ratio is 5. what is the second term of the sequence?
Snezhnost [94]
OH right! I should have realised that!

S6 =  7,812 = a1 * (5^6 - 1)
                               -----------  were  a1 = first term
                                 5 -  1

3906*a1 = 7812
a1 = 7812 / 3906 =  2

Therfore the second term = 2*5  = 10 Answer
4 0
3 years ago
What percent of 1 3/5 is 0.2 and what percent of 2 is 0.2?
saveliy_v [14]
1 3/5 = 8/5
.2=2/100

make an equality:
x/(8/5)=2/100
it kinds looks weird on here but write it out on paper 

then cross multiply: 
100x=(2)(8/5)
100x=16/5

now divide each side by 100:
x=4/125



same for the second one:
make an equality:
x/2=2/100
cross multiply:
100x=(2)(2)
100x=4
x=1/25
7 0
3 years ago
What is the volume of a sphere with a diameter of 7.9 ft
vovangra [49]

Answer:

V ≈ 258 ft³

Step-by-step explanation:

I given the diameter d= 7.9 ft so the radius is r = d/2 = 7.9/2  ft

Volume of a sphere is

V = (4/3) π·r³ = (4/3) · π · (7.9/2)³ = 258.1546167 ft³

5 0
2 years ago
Find the missing side of this right
Delvig [45]

Answer:

19is the answer I think so please check it iam sorry

6 0
3 years ago
Read 2 more answers
A study by Consumer Reports showed that 64% of supermarket shoppers believe supermarket brands to be as good as national name br
natima [27]

Answer:

Step-by-step explanation:

Given that:

A study is conducted and the study by Consumer Reports showed that 64% of supermarket shoppers believe supermarket brands to be as good as national name brands.

a)

Thus; we formulate the null and the alternative hypotheses as follows:

The proportion is ; \frac{64}{100} = 0.64

Null hypothesis:    {H_0}:p = 0.64  

The Null hypothesis states that there is no evidence that “the percentage of supermarket shoppers believes that the supermarket ketchup is good as the national brand ketchup differ form 64%”.

Alternative hypothesis: {H_a}:p \ne 0.64H

The Alternative hypothesis states that there is evidence that “the percentage of supermarket shoppers believes that the supermarket ketchup is good as the national brand ketchup differ form 64%”.

b)

The proportion of the population = 0.64

The sample size n = 100

The number of shoppers = 52  stating that the supermarket brand was as good as the national brand

The sample proportion \hat  p = \frac{52}{100}

\hat  p = 0.52

The z - value is calculated by the formula:

z = \dfrac{\hat p-p}{\frac{\sqrt{ p(1-p)}}{100 }}

z = \dfrac{0.52-0.64}{\frac{\sqrt{ 0.64(1-0.64)}}{100 }}

z = \dfrac{-0.12}{0.048 }}

z = -2.50

Since z = -2.50

the p-value = 2P(Z ≤ -2.50)

p-value = 2 × 0.0062

The p-value = 0.0124

c)

At  significance level,  ∝ = 0.05 ; The p-value = 0.0124

According to  the rejection rule, if p-value is less than 0.05 then we will reject null hypothesis at ∝ = 0.05

Hence, the p-value =0.0124 < ∝ (=0.05)

According to the reject rule; reject null hypothesis.

Conclusion: There is no evidence at all that the percentage of supermarket shoppers believes that the supermarket ketchup is good as the national brand ketchup differ form 64%.

d) we know that the significance level of ∝  = 0.05

The value{z__{0.05}}  is obtained as:

P\left( {\left| Z \right| \le z} \right) = 0.05

Now; to determine Z ; we locate the probability value of 0.05 form the table of standard normal distribution. Then we proceed to the left until the  first column is reached and  the value is 1.90. Also , we move upward until we reach the top and the value is 0.06. Now; the intersection of the row and column results the area  to the left of z

This implies that :P(Z \leq -1.96)=0.05

The critical value for left tail is -1.96 and the critical value for right tail is 1.96.

Conclusion:

The critical value is -1.96 and the value of test statistic is - 2.50.  Here, we can see that  the value of test statistic is lesser than the critical value. Hence, we can be concluded that there is evidence that reject the null hypothesis.

Therefore, Yes, the national brand ketchup manufacturer is pleased with the conclusion.

5 0
3 years ago
Other questions:
  • Mike rides his motor cycle 18 miles in 1/2 hours what is his average speed in mph
    14·2 answers
  • Simplify the following expression: <img src="https://tex.z-dn.net/?f=%5Csqrt%7Bx%7D%2048a%5E%7B8%7D" id="TexFormula1" title="\sq
    13·2 answers
  • What is the axis of symmetry for y=-5x^2-10x-13
    14·1 answer
  • [(21+42)×3]+[4×(18+12)]=
    7·2 answers
  • Find the area. Round to nearest tenth.
    7·1 answer
  • What property is (3×4) 5 =(5×4) 3
    12·2 answers
  • You want to buy a $24,000 car. You can make a 10% down payment, and will finance the balance with a 5% interest rate for 36 mont
    9·1 answer
  • Write the equation of the line that passes through the points (0,7)
    6·2 answers
  • Please answer!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    11·2 answers
  • What is 13/25 in decimal form​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!