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
Olin [163]
3 years ago
6

Select all trips that would take 3 hours,

Mathematics
1 answer:
Leno4ka [110]3 years ago
7 0

Answer:

A and D

Step-by-step explanation:

You might be interested in
4x - 3 = 2x + 7 Solve the folling
Arlecino [84]

Answer:

x=5

Step-by-step explanation:

4x-3=2x+7

2x-3=7

2x=10

x=5

6 0
3 years ago
Graph x < -4 as an inequality.
Kitty [74]

Answer:

<h3>Graph{x<-4[10,10-5,5]}</h3>

<h3>The line will be a dashed line because the inequality operator does not contains an"<em> </em><em>or</em><em> </em><em>equal</em><em> </em><em>to</em><em>"</em>clouse</h3>

7 0
3 years ago
The mean height of women in a country​ (ages 20minus​29) is 64.2 inches. A random sample of 75 women in this age group is select
padilas [110]

Answer:

z=\frac{65-64.2}{\frac{2.84}{\sqrt{75}}} = 2.440

And we can find the probability using the complement rule and with the normal standard table like this:

P(Z>2.440) =1-P(Z

The probability that the mean height for the sample is greater than 65 inches is 0.007

Step-by-step explanation:

Let X the random variable that represent the women heights of a population, and we know the following parameters

\mu=64.2 and \sigma=2.84

We are interested on this probability

P(X>65)

Since the sample size selected is 75>30 we can use the centrel limit theorem and the appropiate formula to use would be the z score given by:

z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}

If we find the z score for 65 inches we got:

z=\frac{65-64.2}{\frac{2.84}{\sqrt{75}}} = 2.440

And we can find the probability using the complement rule and with the normal standard table like this:

P(Z>2.440) =1-P(Z

The probability that the mean height for the sample is greater than 65 inches is 0.007

7 0
3 years ago
Please help me with this!!<br> Thank u
topjm [15]

Answer:

Step-by-step explanation:

Left

When a square = a linear, always expand the squared expression.

x^2 - 2x + 1 = 3x - 5                Subtract 3x from both sides

x^2 - 2x - 3x + 1 = -5

x^2 - 5x +1 = - 5                      Add 5 to both sides

x^2 - 5x + 1 + 5 = -5 + 5

x^2 - 5x + 6 = 0

This factors

(x - 2)(x - 3)

So one solution is x = 2 and the other is x = 3

Second from the Left

i = sqrt(-1)

i^2 = - 1

i^4 = (i^2)(i^2)

i^4 = - 1 * -1

i^4 = 1

16(i^4) - 8(i^2) + 4

16(1) - 8(-1) + 4

16 + 8 + 4

28

Second from the Right

This one is rather long. I'll get you the equations, you can solve for a and b. Maybe not as long as I think.

12 = 8a + b

<u>17 = 12a + b         Subtract</u>

-5 = - 4a

a = - 5/-4 = 1.25

12 = 8*1.25 + b

12 = 10 + b

b = 12 - 10

b = 2

Now they want a + b

a + b = 1.25 + 2 = 3.25

Right

One of the ways to do this is to take out the common factor. You could also expand the square and remove the brackets of (2x - 2). Both will give you the same answer. I think expansion might be easier for you to understand, but the common factor method is shorter.

(2x - 2)^2 = 4x^2 - 8x + 4

4x^2 - 8x + 4 - 2x + 2

4x^2 - 10x + 6    The problem is factoring since neither of the first two equations work.

(2x - 2)(2x - 3)     This is correct.

So the answer is D

5 0
3 years ago
It costs $20 per hour to play pool and $3 for a cue stick rental.Write a verbal model and algebraic expressions to represent the
Fed [463]
Verbal: $23 for every hour you play

Algebraic: 23 x n = total cost
8 0
4 years ago
Other questions:
  • Please help as soon as possible ​
    5·1 answer
  • Simplify!?!?!<br> -6+{14+2[60-9(1+3)]}
    12·2 answers
  • Let a and b be irrational numbers. Is a/b (a over b) rational or irrational?<br> ​<br><br> ​
    14·1 answer
  • What is the slope and y-intercept of the equation: y=1/5x-1
    14·1 answer
  • Can someone solve this for me using the multiplying monomials process?
    14·1 answer
  • Pls help, will gove brainiest to whoever answers all
    15·1 answer
  • 2) 2.25 is 62.5% of what number?
    8·2 answers
  • True or False?
    10·2 answers
  • I'm begging you...but please write it in a long way​
    6·1 answer
  • What’s the answer? I’ve been struggling with this one
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!