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
Pepsi [2]
2 years ago
8

I’ll give brainliest pls do all 3

Mathematics
2 answers:
Phoenix [80]2 years ago
6 0

9:0.2

i will do 8 c7. 7 and 8 will take 30 min i will do ot now wait

fgiga [73]2 years ago
6 0

Answer:

Step-by-step explanation:

7.

Speed = Distance / time

Distance is fixed so speed x time = constant

speed1 x time1 = speed2 x time2

speed1/speed2 = time2/time1

speed1/speed2 = 20/27

time2/time1 = 20/27

Percentage decrease in time = (time1 - time2)/time1 x 100%

= (1 - time2/time1) x 100%

= (1 - 20/27) x 100%

= 7/27 x 100%

= 25.9%

8.

Let the equation of the angle bisector be y = mx + C

It is the angle bisector so its slope, m, is half way between slope of the two lines:

y = 2; slope = 0

y = 4x - 2; slope = 4

So m = (0 + 4) / 2 = 2

y = 2x + C

It is the angle bisector so the line must pass through intersection of the two lines:

y = 2 and y = 4x - 2

4x -2 = 2

x = 1

Intersection point is at x = 1 and y = 2

Substitute back into y = 2x + C

2 = 2(1) + C

C = 0

So the equation is y = 2x

9.

\sqrt{\frac{1}{25} } \\= \frac{\sqrt{1}}{\sqrt{25}} \\= \frac{1}{\sqrt{5^{2}}} \\\\

= 1/±5

= ±1/5

You might be interested in
The amount of calories consumed by customers at the Chinese buffet is normally distributed with mean 2885 and standard deviation
aliina [53]

Answer:

a.  X~N(2,885, 651)

b.  0.086291

c.  0.00058

d.  3213.10 calories

Step-by-step explanation:

a. -A normal distribution is expressed in the form X~N(mean, standard deviation).

-Let X a random variable denoting  the number of calories consumed.

-X is a is a normally distributed random variable with mean 2885 and standard deviation 651.

-This distribution is expressed as X~N(2,885, 651)

b. The probability that less than 2000 calories are consumed is calculated using the formula:

P(X

#substitute the given values in the formula to solve for P:

P(X

Hence, the probability of consuming less than 2000 calories is 0.08691

c. The proportion of customers consuming more than 5000 calories is calculated as:

P(X>x)=P(z>\frac{\bar X-\mu}{\sigma})\\\\=P(Z>\frac{5000-2885}{651})\\\\=P(z>3.2488)\\\\=1-0.99942\\\\=0.00058

Hence, the proportion of customers consuming over  5000 calories is 0.00058

d. The least amount of calories to get the award is calculated as:

1% is equivalent to a z value of 0.50399.

-We equate this to the formula to solve for the mean consumption:

0.01=P(z>\frac{\bar X-\mu}{\sigma})\\\\=P(z>\frac{\bar X-2885}{651})\\\\\1\%=0.50399 \\\\\frac{\bar X-2885}{651}=0.50399 \\\\\bar X=0.50399\times 651+2885\\\\=3213.09

Hence, the least amount of calories consumed to qualify for the award is 3213.10 calories.

8 0
3 years ago
What is the solution m<1?
olchik [2.2K]

Answer:         D

Step-by-step explanation: becaus elook at it bitlkjmnjhnnjh

5 0
2 years ago
Factor out the monomial: 18x^2 + 2
Trava [24]

Answer:

Step-by-step explanation:

18x² + 2 = 2 * 9x² + 2 *1

             = 2*(9x² + 1)

4 0
2 years ago
Which of the following could be the lengths of the three sides of a triangle?
OverLord2011 [107]

its b

Step-by-step explanation:

cuz to sides are the exact same then one side is bigger than the others :)

3 0
2 years ago
Read 2 more answers
What has to be true for the triangles to be congruent?
natita [175]

Answer:

Step-by-step explanation:

Argument

I think the answer is A = N or D. It that is true, then M = C because all three angles are equal which gives similarity. But there is a side involved. OM = CB. Therefore the two triangles are congruent by ASA

Answer

ASA

5 0
1 year ago
Other questions:
  • Change the expression into a fraction:<br> (3x/2y+3) + (x^2+3x/4xy−3−2y+6x)
    14·1 answer
  • Can anyone help solve this question? I’m lost
    13·1 answer
  • Find the radical equivalent of 272/3 and compute it?
    6·2 answers
  • What does y equal?......​
    9·1 answer
  • Devin reads 2 pages of a book every 3 minutes. Which proportion could be solved to find x, the number of minutes it will take to
    11·1 answer
  • Alex has six candy bars he wants to cut into fifths. How many 1/5 size pieces will he have
    13·1 answer
  • Fill in the blank by choosing the most appropriate word.
    13·1 answer
  • Help meee please l don’t understand it’s a new topic
    11·1 answer
  • Let x be the amount of time (in hours) the wait is to get a table at a restaurant. Suppose the cdf is represented by f(x)=⎧⎩⎨⎪⎪⎪
    5·1 answer
  • volunteers collected non perishable food items and packed 14 items per box. If the volunteers collected a total fo 200 items, ho
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!