admin

2 months ago

Guest #3139

2 months ago

32 quizzes. If you make a proportion of quiz/weeks it would be 16/4 = x/8. Multiply by 2.

Question

A rectangle has a perimeter of 54 meters and a height of 14 meters. What is the length of the base? Please help!!

Solution 1

13 because if the height is 14 you would subtract 28 because thereâ€™s two sides. Then you would get 26, divide that by 2 and get 13 for the base. Idk if it makes sense

Question

A new patio will be an irregular hexagon. The patio will have two long parallel sides and an area of 360 square feet. The area of a geometrically similar patio is 250 square feet, and itâ€™s long parallel sides are 12.5 feet apart. What is the corresponding distance on the new patio

Solution 1

The length of the new patio will be evaluated as follows:

The area scale factor=(area of new patio)/(area of original patio)

=360/250

=36/25

but

Linear scale factor=âˆš(area scale factor)

Linear scale factor=âˆš(36/25)=6/5

thus the length of the patio will be:

length=(linear scale factor)*(length of the original patio)

=6/5Ã—12.5=15 ft

The area scale factor=(area of new patio)/(area of original patio)

=360/250

=36/25

but

Linear scale factor=âˆš(area scale factor)

Linear scale factor=âˆš(36/25)=6/5

thus the length of the patio will be:

length=(linear scale factor)*(length of the original patio)

=6/5Ã—12.5=15 ft

Question

Mitch does not know the correct answer to two multiple choice questions. The choices are A,B,C, and D. If Mitch just guesses, what is the probability that Mitch will guess both answers correctly?

Solution 1

Both chances to success are 1/4. If you want the first AND the second to be successful, you have to multiply the chances, so the answer is

1/4 * 1/4 = 1/16

1/4 * 1/4 = 1/16

Question

David and Brad are competing in a 20-mile bicycle race. David rides 6.2 miles in 1/4 hour. Brad rides 11.9 miles in 1/2 hour. If both riders continue at the same average speed, who will finish first? Explain how you know.

Solution 1

First, you calculate David's and Brad's unit rate.Â

David:

6.2 mi./1/4 hr. = 6.2 m./15 minutesÂ

In an hour, there's 60 minutes. 60 divided by 4 is 15. So 1/4 of an hour is 15 minutes.

Brad:

11.9 mi./1/2 hr. = 11.9 mi./30 minutes

Once again, there's 60 minutes in an hour, so 1/2 of an hour is 30 minutes.

Okay, observing both of the unit rates, David's speed is just about half of Brad's speed. As a result, you multiply David's unit rate twice to get the same amount of time as Brad. It's easier to solve if you think about fractions since unit rates and fractions are just about the same. Now, multiply both the numerator and denominator by 2:

6.2 x 2 = 12.4, and 15 x 2 = 30

Now that you've multiplied them by two, David and Brad are now continuing at the same average speed.

David: 12.4 mi./30 min.

Brad: 11.9 mi./30 min.

David will finish the bicycle race first since he's gone farther than Brad.

I reallyÂ hope I helped! :) There are so many other ways to solve this, but here's one way that I know best. If I didn't help, I'm sorry. I tried. :(

David:

6.2 mi./1/4 hr. = 6.2 m./15 minutesÂ

In an hour, there's 60 minutes. 60 divided by 4 is 15. So 1/4 of an hour is 15 minutes.

Brad:

11.9 mi./1/2 hr. = 11.9 mi./30 minutes

Once again, there's 60 minutes in an hour, so 1/2 of an hour is 30 minutes.

Okay, observing both of the unit rates, David's speed is just about half of Brad's speed. As a result, you multiply David's unit rate twice to get the same amount of time as Brad. It's easier to solve if you think about fractions since unit rates and fractions are just about the same. Now, multiply both the numerator and denominator by 2:

6.2 x 2 = 12.4, and 15 x 2 = 30

Now that you've multiplied them by two, David and Brad are now continuing at the same average speed.

David: 12.4 mi./30 min.

Brad: 11.9 mi./30 min.

David will finish the bicycle race first since he's gone farther than Brad.

I reallyÂ hope I helped! :) There are so many other ways to solve this, but here's one way that I know best. If I didn't help, I'm sorry. I tried. :(

Question

Jika f(x-1)=2x+5 dan g1(x-2)=4x+2 maka (gâ€¢f)1(0)

Solution 1

G (x) = x + 1 (fog) (x) = x 2 + 3x + 1 â‡’ (fog) (x) = x 2 + 3x + 1 â‡’ f (g (x)) = x 2 + 3x + 1 â‡’ f (x + 1) = x 2 + 3x + 1 Eg x + 1 = p, then x = p - 1. â‡’ f (p) = (p - 1) 2 + 3 ( p - 1) + 1 â‡’ f (p) = p 2 - 2p + 1 + 3p - 3 + 1 â‡’ f (p) = p 2 Â + p - 1 So f (x) = x 2 Â + x - 1 - ->Â

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ANSWER IS :Â x 2 + x - 1Â

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ANSWER IS :Â x 2 + x - 1Â

Question

Dana measured the height of her bedroom wall to be 3 yards tall.which of these is closest to the equivalent measurement? 0.6 kilometers,3.5 meters,274.3 centimeters,or 7834.7 millimeters

Solution 1

274.3 centimeters is closest to the equivalent

Question

explain why in any triangle the difference of the lengths of any two sides cannot be greater that the length of the third side.

Solution 1

Becuase then the 3 lines woul dnot connect

if you draw any 1 line of legnth w

then lets say you draw a line of legnth w/2 and (2/w)-1

then you would have 2 lines that are too short to connect

try it yourself

basically lets say we have sides legnth 3,6,10

10-6 is more than 3

if you draw a line that is 10 legnth and try to draw 1 line at each end, one which is 3 legnth and the other which is 6 legnth, you cannnot connect the 3 and 6 line becuase they are 1 unit too short, if they were 1 unit longer, then the triangle would be a line

if you draw any 1 line of legnth w

then lets say you draw a line of legnth w/2 and (2/w)-1

then you would have 2 lines that are too short to connect

try it yourself

basically lets say we have sides legnth 3,6,10

10-6 is more than 3

if you draw a line that is 10 legnth and try to draw 1 line at each end, one which is 3 legnth and the other which is 6 legnth, you cannnot connect the 3 and 6 line becuase they are 1 unit too short, if they were 1 unit longer, then the triangle would be a line

Question

Two cyclists leave town at the same time on the same road going in Â the same direction. Cyclist a is going 6 miles per hour faster than cyclist b. After 8 hours, cyclist a has traveled three times the distance as cyclist b. Use the equation 24x= 8(x+6) to find how fast cyclist b was traveling.

Solution 1

**Answer:**

**3 mph**

**Step-by-step explanation:**

Two cyclists leave town at the same time on the same road going in Â the same direction.

Cyclist A is going 6 mph faster than cyclist B

Let speed of cyclist B be x mph

Speed of cyclist A be (x+6) mph

Both cyclist leave town at the same time and traveled 8 hours. Â

- Distance covered by cyclist A in 8 hours= 8(x+6)

- Distance covered by cyclist B in 8 hours= 8x

After 8 hours cyclist A has traveled 3 times the distance as cyclist B

Therefore, 8(x+6) = 3(8x)

8x + 48 = 24x

24x - 8x = 48

Â Â Â Â 16x = 48

Â Â Â Â Â x = 3 mph

**Hence, The speed of cyclist B was 3 mph**

Solution 2

24x=8x+48

16x=48

/16Â /16

**x=3**

16x=48

/16Â /16

Question

one of the congruent angles of an isosceles triangle measures 40 degrees. what measures do the other angles have?

Solution 1

Isosolese triangle has 2 equal angles

3 interior angles of a triangle add upt o 180 so

since 1 of the 2 identical angles are 40 then

40+40+x=180

80+x=180

subtract 80

x=100

the ohter angle is 100

the answer is

angles=40,40,100

3 interior angles of a triangle add upt o 180 so

since 1 of the 2 identical angles are 40 then

40+40+x=180

80+x=180

subtract 80

x=100

the ohter angle is 100

the answer is

angles=40,40,100

Question

A professional basketball team must play a total of 85 came before the playoffs begin. The team has played 3/5 of the scheduled games, if the team plays 10 more games, what is the total number of games they will have played

Solution 1

They will have played a total number of 61 games.

85*3/5 is 51 and then 51+10=61.

85*3/5 is 51 and then 51+10=61.

Mathematics
2647929

History
842281

English
748681

Biology
586256

Social Studies
406852

Chemistry
368373

Business
348603

Physics
324927

Health
199835

Spanish
130075

Geography
112100

Computers and Technology
106146

Arts
77164

Advanced Placement (AP)
23675

World Languages
23213

French
22589

Engineering
19607

Law
17108

Medicine
13966

SAT
10987

German
3389

High School
3423409

Middle School
2092250

College
1518097