A cyclist going downhill is accelerating at 1.2 m/s2. If the final velocity of the cyclist is 16 m/s after 10 seconds, what is the cyclist’s initial velocity?

4 m/s
12 m/s
18 m/s
20 m/s

Answer:

D: 16/2

Step-by-step explanation:

you take 16 and divide it by 2 making your answer 8

Answer:

Step-by-step explanation:

1. 80+8x≥176  because 80 times however many days worked plus 8 times however many video games sold on Thursday

and

2. 7x + 13y ≤ 81  I'm not sure how to explain why on this one.

CREDITS GO TO THE OTHERS WHO MADE THESE ANSWERS, I JUST FOUND THEM SO I COULD HELP THIS PERSON!

Answer:

1

Step-by-step explanation:

Answer:

The answer is A

Step-by-step explanation:

Reject the null concluding that there is evidence the proportion is higher for men.

Using the z-distribution, as we are working with proportions, it is found that the correct option is:

b) Reject the null hypothesis concluding that there is no evidence that the proportion is higher for men.

At the null hypothesis, it is tested if the proportions are the same, that is:

[tex]H_0: p_M - p_W = 0[/tex]

At the alternative hypothesis, it is tested if it is higher for men, that is:

[tex]H_1: p_M - p_W > 0[/tex]

For each sample, we have that:

[tex]p_M = \frac{155}{254} = 0.6102, s_M = \sqrt{\frac{0.6102(0.3898)}{254}} = 0.0306[/tex]

[tex]p_W = \frac{157}{301} = 0.5216, s_W = \sqrt{\frac{0.5216(0.4784)}{301}} = 0.0288[/tex]

Then, for the distribution of differences, the mean and the standard error are given by:

[tex]\overline{p} = p_M - p_W = 0.6102 - 0.5216 = 0.0886[/tex]

[tex]s = \sqrt{s_M^2 + s_W^2} = \sqrt{0.0306^2 + 0.0288^2} = 0.042[/tex]

It is given by:

[tex]z = \frac{\overline{p} - p}{s}[/tex]

In which p = 0 is the value tested at the null hypothesis, hence:

[tex]z = \frac{\overline{p} - p}{s}[/tex]

[tex]z = \frac{0.0886 - 0}{0.042}[/tex]

[tex]z = 2.11[/tex]

Considering a right-tailed test, as we are testing if the proportion is higher than a value, with a significance level of 0.05, the critical value is of [tex]z^{\ast} = 1.645[/tex].

Since the test statistic is greater than the critical value for the right-tailed test, there is enough evidence to reject the null hypothesis that the there is no evidence that the proportion is higher for men, hence option b is correct.

More can be learned about the z-distribution at https://brainly.com/question/26454209

Answer:

Step-by-step explanation:

1. 6,561

2. 33 Oh wait sry its 87

3. 127

does this help?

Answer:

whats the question

Step-by-step explanation:

Answer:

9

Step-by-step explanation:

hope u understand sorry for bad photo

Answer:

x = 9

Step-by-step explanation:

[tex] \triangle ABC\sim \triangle ADE.... (given) [/tex]

[tex] \therefore \frac{AB}{AD} = \frac{BC}{DE}.... (csst) [/tex]

[tex] \therefore \frac{28}{20} = \frac{2x+3}{15}[/tex]

[tex] \therefore \frac{7}{5} = \frac{2x+3}{15}[/tex]

[tex] 5(2x+3) = 7\times 15[/tex]

[tex] 10x+15 = 105[/tex]

[tex] 10x = 105-15[/tex]

[tex] 10x = 90[/tex]

[tex] x = \frac {90}{10}[/tex]

[tex] x = 9[/tex]

Answer:

One gallon can of paint will cover up to 400 square feet, which is enough to cover a small room like a bathroom. Two gallon cans of paint cover up to 800 square feet, which is enough to cover an average size room. This is the most common amount needed, especially when considering second coat coverage.

Step-by-step explanation:

Answer:

well it depends on how big the house so... One gallon can of paint will cover up to 400 square feet, which is enough to cover a small room like a bathroom. Two gallon cans of paint cover up to 800 square feet, which is enough to cover an average size room. so about 2  maybe 3 gallons

Step-by-step explanation:

hope this is useful!

Answer:

89 i dont know

Step-by-step explanation:

Answer:

x=12 , y= 49

Step-by-step explanation:

X= 180 - (90+78)= 12

180-(90+41)= 49

y=49 (isosceles triangle)

Answer:

Number 1 is 17 cents

Number 2 is 164.35

Number 3 is 213

Step-by-step explanation:

Please mark brainliest

Answer:

The answer is 54203!

Step-by-step explanation:

Pls mark me branlyist

Answer:

The answer to your question is....

809 x 67 = 54203

Answer:

the height of the object is  and the height at 6 seconds is .

b. the height of the object increases and then decreases.

c. -16(t - 9) (t +4)

i really really really hope this helps

Answer:

I think the 1st one would be 10...

Step-by-step explanation:

Because 12-2=10 and 18-8=10.

If I'm wrong, im super sorry

Answer:

2 and 2/3

Result in decimals: 2.6666666666667

Step-by-step explanation:

Answer:

y=1/2x-2

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(-1-1)/(2-6)

m=-2/-4

m=1/2

y-y1=m(x-x1)

y-1=1/2(x-6)

y=1/2x-6/2+1

y=1/2x-3+1

y=1/2x-2

Answer:

a. 15

b. 27

c. 4

d. 72

e. 2

Step-by-step explanation:

If you need an explanation lmk! happy to help.

Answer:

Well it's the same because it's the same problem just worded different it's like saying "May I?" and your sister says "Can I?" It's the same question just different wording.

Answer:

(5x+2)+(7x+3) and 12x+5

Step-by-step explanation:

Answer:

The answer is D.

Step:

6*5*12=360

answer

£2

explanation

12÷50%=6

12÷33%=4

6+4=10

12-10=2

Answer:

2.04 pounds left.

Step-by-step explanation:

Whitney has 12 pounds pocket money

She spends 50% of it on magazines

50% of 12 pounds is 50/100 * 12 = 600/100 =         6 pounds

33% of 12 pounds is 33/100 * 12 = 395/100             3.96 pounds

Total Spent                                                                9.96 pounds

Amount left = 12 - 9.96 = 2.04

She has 2.04 pounds left.

Answer:

Monday is a weekday, with which there would be 8 volunteers.

In turn, Saturday is a weekend day, with which there would be 5 volunteers.

2 people will not be helped if the ratio of volunteers to the person needing help is 1:1.

Step-by-step explanation:

Given that there are 8 volunteers during the weekday and only 5 volunteers on the weekend, to determine how many volunteers do you have on Monday and Saturday the following logical reasoning must be carried out:

Monday is a weekday, with which there would be 8 volunteers.

In turn, Saturday is a weekend day, with which there would be 5 volunteers.

In turn, if you have 10 people who need help from the volunteers on Monday, to determine how many will not get helped if the ratio of volunteers to the person needing help is 1: 1 the following logical reasoning must be carried out:

10: 8

1: 1

10 - 8 = 2

Thus, 2 people will not be helped if the ratio of volunteers to the person needing help is 1:1.

Answer:

ok read the step by step

Step-by-step explanation:

imagine you're in a sauna alone, the room is a comfortable warm temperature and there is a light sweat that coats your skin. suddenly a man walks in with a towel around his waist, he is a big burly man with massive muscles. he sits next to you and lets go of his towel. after some awkward conversation he gets up to leave and forgets to hold his towel. the towel falls almost in slow-mo and it reveals... a fishtail? he looks back in shock and says in a deep voice "you know too much" raises his arm and strikes you down.

Answer:

8 1/6 / 1 7/8 = 196/45 = 4 16/45 ≅ 4.3555556

Step-by-step explanation:

Conversion a mixed number 8 1/6

to a improper fraction: 8 1/6 = 8 1/6 = 8 · 6 + 1/6= 48 + 1/6 = 49/6

To find new numerator:

a) Multiply the whole number 8 by the denominator 6. Whole number 8 equally 8 * 6/6 = 48/6

b) Add the answer from previous step 48 to the numerator 1. New numerator is 48 + 1 = 49

c) Write a previous answer (new numerator 49) over the denominator 6.

Eight and one sixth is forty-nine sixths

Conversion a mixed number 1 7/8

to a improper fraction: 1 7/8 = 1 7/8 = 1 · 8 + 7/8 = 8 + 7/8= 15/8

To find new numerator:

a) Multiply the whole number 1 by the denominator 8. Whole number 1 equally 1 * 8/8 = 8/8

b) Add the answer from previous step 8 to the numerator 7. New numerator is 8 + 7 = 15

c) Write a previous answer (new numerator 15) over the denominator 8.

One and seven eighths is fifteen eighths

Divide: 49/6 : 15/8 = 49/6 · 8/15 = 49 · 8/6 · 15 = 392/90 = 2 · 196 /2 · 45 = 196/45

Dividing two fractions is the same as multiplying the first fraction by the reciprocal value of the second fraction. The first sub-step is to find the reciprocal (reverse the numerator and denominator, reciprocal of 15/

8 is 8/15

) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators. In the next intermediate step , cancel by a common factor of 2 gives 196/45

.

In words - forty-nine sixths divided by fifteen eighths = one hundred ninety-six forty-fifths.

Answer:

y = 3

x = - 3

Step-by-step explanation:

First we represent "x" through "y"

y = x + 6

x = y - 6

Then we substatute this value instead of "x" in the other formula, and so we get...

y = - 2x - 3

y = - 2(y - 6) - 3

y = - 2y + 12 - 3

3y = 9

y = 3

Now that we know "y" we can find out "x" by doing...

x = y -6

x = 3 - 6

x = - 3

i believe the area is 48 if it's not correct sorry

Answer:

n < 9

Step-by-step explanation:

Solving an inequality is just like solving an equation, one uses inverse operations. The only difference is that when one multiplies or divides by a negative number, one must remember to flip the inequality sign to ensure that the expression remains true.

[tex]-6 n > 54[/tex]

[tex]/ (-6)[/tex]

[tex]n < 9[/tex]

Answer:

4

Step-by-step explanation:

The general equation circle is

[tex] {x}^{2} + {y}^{2} = {r}^{2} [/tex]

Where r is the radius

Plug in the equation

[tex] {x}^{2} + {y}^{2} = 16[/tex]

Take the sqr root of 16 tocfind the radius

[tex] \sqrt{16} = 4[/tex]