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tamaranim1 [39]
4 years ago
11

The table shows the results of a random survey of students in grade 9 and grade 10. Every student surveyed gave a response. Each

student was asked if he or she exercised less than 5 hours last week or 5 or more hours last week. Based on the results of the survey, which statements are true?
Mathematics
2 answers:
icang [17]4 years ago
7 0

Answer:

A total of 221 students were surveyed.

and

Less than 50% of the 10th grade students surveyed exercised 5 or more hours last week.

Step-by-step explanation:

ruslelena [56]4 years ago
5 0

Answer:

i dont know because you wont know if they are lying would you

Step-by-step explanation:

You might be interested in
Which transformation have been placed on the function f(x) = | x | to create g(x) = 12|x−3|−4?
Karolina [17]

Answer:

i would say translated right 3 units and translated down 4 units

Step-by-step explanation:

4 0
4 years ago
Find the distance between the two points on the graph
sukhopar [10]

Answer: The side highlighted is 6.3 units long

Step-by-step explanation:

You can use Pythagorean therum to solve this problem

a² + b² = c²

We already know the length of two of the sides, a and b. So we will replace those variables with the given values

2² + 6² = c²

And now we solve

2² + 6² = c²

4 + 36 = c²

c² = 40

<em>√40 = 6.3</em>

4 0
3 years ago
3. Write a similarity statement and state the scale<br> factor for the triangles.
ivann1987 [24]

Answer:

AA SIMILARITY statement

SSS similarity statement is also possible.

Step-by-step explanation:

In \:  \triangle CBA  \: and \:  \triangle TVU \\  \angle B \cong \angle V... (given) \\\angle A \cong \angle U... (given) \\\therefore \triangle CBA \sim \triangle TVU... (By AA\: Postulate)  \\

5 0
4 years ago
A grocery store is giving a reusable bag to every person who donates more then than 5.00 to charity Courtney donates 1.25 will s
andrew-mc [135]

Answer:

no

Step-by-step explanation:

the punctuation was a little confusing, but heres what i think u meant

"A grocery store is giving a reusable bag to every person who donates more then than 5.00 to charity, Courtney donates 1.25, will she get a bag?"

for this answer we see that x is the amount of money someone donates, so x has to be greater then 5.00, so the mathematical expression would be shown like this

x > 5.00

if x is not greater then 5.00 (like if its equal or less) then the store will not give a new bag, in this case 1.25 is not an amount that x can be

8 0
3 years ago
Researchers are interested in determining whether more men than women prefer Coca Cola to Pepsi. In a random sample of 300 men,
kobusy [5.1K]

Answer: 0.17 ± 0.096

Step-by-step explanation:

Confidence interval for difference between the population proportion :

p_1-p_2\pm z^*\sqrt{\dfrac{p_1(1-p_1)}{n_1}+\dfrac{p_2(1-p_2)}{n_2}}

, where p_1 = sample proportion for population 1.

 p_2 = sample proportion for population 2.

n_1 = Sample size from population 1.

n_2 = Sample size from population 1.

As per given , we have

Population

p_1=0.65\ \ \& \ \ p_2=0.48

n_1=300\ \ \ \&\ \ n_2=400

Critical z-value for 99% confidence level is z*=2.576  [By z-table]

Now , the 99% confidence interval estimate for the difference between the percentages of men and women who prefer Coca Cola over Pepsi :

(0.65-0.48)\pm (2.576)\sqrt{\dfrac{(0.65)(1-0.65)}{300}+\dfrac{(0.48)(1-0.48)}{400}}\\\\= 0.17\pm(2.576)\sqrt{0.0007583+0.000624}\\\\=0.17\pm(2.576)\sqrt{0.0013823}\\\\=0.17\pm(2.576)(0.03718)\\\\=0.17\pm0.09577568\\\\\approx0.17\pm0.096\

Hence, the correct answer is 0.17 ± 0.096.

6 0
3 years ago
Read 2 more answers
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